RT9480 Datasheet. Www.s Manuals.com. R04 Richtek

User Manual: Marking of electronic components, SMD Codes 1Q, 1Q=**. Datasheets FMMT5088, KST5088, MMBT5088, RT9480GQW.

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RT9480

DS9480-04 December 2014 www.richtek.com

Easy to Use Power Bank Solution (EZPBSTM) Integrated Chip

with Two Ports Output

General Description

The RT9480 is a high integration and easy to use power

solution for Li-ion power bank and other powered handheld

applications. We call it EZPBSTM (Easy to Use Power

Bank Solution). This single chip includes a linear charger,

a synchronous Boost with dual output load management

and a torch function support. The battery volume and the

state of charging and discharging can be indicated by

4LEDs. The RT9480 is available in the WQFN-24L 4x4

package.

Simplified Application Circuit

Features

EZPBSTM (Easy to Use Power Bank Solution)

-Compact BOM Elements with EZPBSTM Single Chip

-Protection Functions (OTP, OVP, OCP, VBUS and

Output Short Protection)

-Support Charging and Discharging at the same time

by Smart Algorithm

Charger

-One Linear Charger up to 1.2A

-DPM Function (Dynamic Power Management)

-Thermal Regulation

-Auto-Recharge

-Support JEITA Function

USB Output

-Support Dual USB Output

-Auto and Button Control

-Sync-Boost Total Output Current up to 2.5A



 Peak Efficiency 97%

Battery State of Charge (SOC) Indicator

-Battery SOC Detection

-Support NTC for Battery Temperature Sensing

-4LEDs for Battery SOC Display

Other Functions

-Torch Functions

Applications

-Li-ion Power Bank

Ordering Information

Note :

Richtek products are :

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

RT9480

Package Type

QW : WQFN-24L 4x4 (W-Type)

(Exposed Pad-Option 2)

Lead Plating System

G : Green (Halogen Free and Pb Free)

Serial Number

VBAT

VBUS RT9480

LEDx

VMID

LXBST

GND

BUTTON

USBOUT1

USBOUT2

SWIN2

TORCH

Input Power

Battery

CIN

Battery

USB Port 1

LED Indicator

USB Port 2

Torch Function

CVMID

CBAT

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Pin Configurations

(TOP VIEW)

WQFN-24L 4x4

Product Name List

Serial

Number Product Name Auto/Button SOC LED

Number Programmable Battery

Regulation Time Out of

USBOUT Detach

RT9480GQW Button 4LEDs Disable 4.2V 12 Hours

AA01 RT9480GQW-AA01 Auto 4LEDs Disable 4.2V 3sec

AA02 RT9480GQW-AA02 Button 4LEDs Disable 4.35V 12 Hours

AA03 RT9480GQW-AA03 Button 4LEDs Disable 4.2V 3sec

AB01 RT9480GQW-AB01 -- -- Enable -- --

* : Please refer to application note.

-- : Set by program

VBAT

LED1

LED2

LED3

LED4

TP1

GND

BUTTON

TORCH

USBOUT1

USBOUT2

TP2

SWIN2

LXBST

VMID

VBUS

PGNDBST

LXBST

GND

78910 1211

21 20 1924 2223

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

RT9480

DS9480-04 December 2014 www.richtek.com

Functional Pin Description

Pin No. Pin Name Pin Function

1 VBAT Battery Charge Current Output.

2 TS Battery Temperature Sense Setting.

3 LED1 Current Sink Output for LED1.

4 LED2 Current Sink Output for LED2.

5 LED3 Current Sink Output for LED3.

6 LED4 Current Sink Output for LED4.

7, 8, 14 NC No Internal Connection.

25 (Exposed Pad) GND Ground. The exposed pad must be soldered to a large PCB and

connected to GND for maximum power dissipation.

10 TORCH Current Sink Output for Torch LED Function. Open Drain Output

11 BUTTON Button Control Input for mode change.

12 TP1 Connected to GND.

13 TP2 Connected to GND.

15 USBOUT2 USB-2 Power Output.

16 SWIN2 USB-2 Power Input.

17, 18 USBOUT1 USB-1 Power Output.

19 VMID Boost Output.

20, 21 LXBST Boost Switch Output.

22, 23 PGNDBST Boost Power GND.

24 VBUS VBUS Power Supply.

RT9480

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Function Block Diagram

Linear Charger 1.2A

Central Control

1. Battery Capacity

Detection

2. Protection

3. LED Display

4. Mode Control

5. Button Operation

USB-1 Load

Manager Up to 2.1A

USB-2 Load

Manager Up to 1A

Torch Brightness

Control (Open Drain)

VBAT

LED1

LED2

LED3

LED4

GND

BUTTON

TORCH

USBOUT1

USBOUT2

SWIN2

VMID

PGNDBST

LXBST

VBUS

TP1

TP2

RT9480

DS9480-04 December 2014 www.richtek.com

Operation

The RT9480 is a high integrated IC for Li-Ion battery power

bank. It includes a linear charger 1.2A, a synchronous

Boost 5.1V, two output load management, LED indicator

and torch function.

Change Current

Base on thermal regulation function, the charging current

can support up to 1.2A.

VBUS OVP

If the input voltage (VBUS) is higher than the threshold

voltage VOVP, the internal OVP signal will go high and the

charger will stop charging until VIN is below VOVP − ΔVOVP.

VMID OVP

If the internal voltage (VMID) is higher than the threshold

voltage VOVP, the internal OVP signal will go high and the

charger will stop charging until VMID is below

VOVP −ΔVOVP.

OCP

The converter senses the current signal when the high-

side P-MOSFET turns on. As a result, The OCP is cycle

by-cycle current limitation. If the OCP occurs, the converter

holds off the next on pulse until inductor current drops

below the OCP limit.

OTP

The converter has an over-temperature protection. When

the junction temperature is higher than the thermal

shutdown rising threshold, the system will be latched and

the output voltage will no longer be regulated until the

junction temperature drops under the falling threshold.

Output Short Protection

When output short to ground, the system will be latched

and the output voltage will no longer be regulated until

power reset.

CC/CV/TR Multi Loop Controller

There are constant current loop, constant voltage loop and

thermal regulation loop to control the charging current.

Too Hot or Too Cold

The temperature sense input TS pin can be connected a

thermistor to determine whether the battery is too hot or

too cold for charging operation. If the battery's temperature

is out of range, charging is paused until it re-enters the

valid range.

RT9480

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Electrical Characteristics

Recommended Operating Conditions (Note 4)

-Supply Input Voltage, VBAT, VBUS --------------------------------------------------------------------- 2.8V to 5.5V

-Junction Temperature Range------------------------------------------------------------------------------ −40°C to 125°C

-Ambient Temperature Range------------------------------------------------------------------------------ −40°C to 85°C

Absolute Maximum Ratings (Note 1)

-Supply Voltage, VBAT-------------------------------------------------------------------------------------- −0.3V to 6V

-Supply Voltage, VBUS ------------------------------------------------------------------------------------- −0.3V to 10V

-Supply Voltage USBOUT1, USBOUT2 Pulse (100μs) ---------------------------------------------- −0.3V to 10V

-LED Output Voltage, LED1, LED2, LED3, LED4 ---------------------------------------------------- −0.3V to 10V

-TORCH --------------------------------------------------------------------------------------------------------- −0.3V to 10V

-Other Pins----------------------------------------------------------------------------------------------------- −0.3V to 6V

-Power Dissipation, PD @ TA = 25°C

WQFN-24L 4x4 ---------------------------------------------------------------------------------------------- 3.57W

-Package Thermal Resistance (Note 2)

WQFN-24L 4x4, θJA ----------------------------------------------------------------------------------------- 28°C/W

WQFN-24L 4x4, θJC ---------------------------------------------------------------------------------------- 7.1°C/W

-Junction Temperature Range------------------------------------------------------------------------------ 150°C

-Lead Temperature (Soldering, 10 sec.)----------------------------------------------------------------- 260°C

-Storage Temperature Range ------------------------------------------------------------------------------ −65°C to 150°C

-ESD Susceptibility (Note 3)

HBM (Human Body Model) -------------------------------------------------------------------------------- 2kV

MM (Machine Model) --------------------------------------------------------------------------------------- 200V

TOP Unit Electrical Characteristics

(VBUS = 5V, VBAT = 3.7V, TA = 25°C, unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Input

Battery Quiescent Current

for Standby IBAT_sdy No VBUS, Boost

on, Indicator Off. Button Mode -- 30 -- A

RT9480

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Parameter Symbol Test Conditions Min Typ Max Unit

Supply Input

Output Voltage VOUTBST -- 5.1 -- V

Output Voltage Accuracy VOUTBST 5 -- 5 %

MAX Output Current As VBAT > 3.3V, VOUT = 5V -- 2.5 -- A

PFET Peak Current Limit IOCP 6 -- -- A

Power Switch

Switching Frequency fSW 0.2 0.25 0.3 MHz

Protection

Over-Voltage Protection VMID_OVP 5.6 5.7 6 V

Over-Voltage Protection

Hysteresis VMID_OVP_hys -- 0.2 -- V

Under-Voltage Protection

(Short-Circuit Protection) VBST_FBUV -- 3.37 -- V

Boost Unit Electrical Characteristics

(VBUS = 5V, VBAT = 3.7V, TA = 25°C, unless otherwise specified)

Charger Unit Electrical Characteristics

(VBUS = 5V, VBAT = 3.7V, TA = 25°C, unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Input

VBUS  VBAT VOS Rising VOS_H -- 100 200 mV

VBUS  VBAT VOS Falling VOS_L 10 50 -- mV

Battery Charger

VBUS Operating Range VBUS_CHG 4.5 -- 5.5 V

VBUS Regulation DPM VDPM = 4.5V 5 -- 5 %

Voltage Regulation

VBAT Regulation VREG T

A = 0 to 85C, VREG = 4.2V 1 -- 1 %

Re-Charge Threshold VRECHG V

REG  Recharge Level -- 150 -- mV

VBUS Power FET RDS(ON) R

DS(ON)_chg I

BAT = 1A -- 200 300 m

Current Regulation

Fast-Charge Current Accuracy ICHG I

CHG = 1.2A 5 -- 5 %

Pre-Charge Current Accuracy ICHG_Pre Ratio of Fast-Charge Current 5.5 10 14.5 %

Pre-Charge Threshold Vpre V

BAT Rising 2.35 2.5 2.65 V

Pre-Charge Threshold

Hysteresis Vpre V

BAT Falling 120 200 280 mV

Charge Termination Detection

Termination Current Ratio ITERMI -- 10 -- %

Timer

Fast-Charge Time Fault TF_CC -- 24 -- hour

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Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are

stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in

the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may

affect device reliability.

Note 2. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

Others Electrical Characteristics

(VBUS = 5V, VBAT = 3.7V, TA = 25°C, unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

LED

LED Current Sink ILED -- 0.75 -- mA

Torch

Open-Drain Low Voltage VODL_T I

SINK = 5mA -- 200 -- mV

Button

Button Control Logic-High VIH_B 1.5 -- -- V

Logic-Low VIL_B -- -- 0.4 V

Press Duty

Time

High-Level TPress_H 0.1 -- -- sec

Low-Level TPress_L 0.1 -- -- sec

Protection

Charger Thermal Regulation TREG For Charger -- 105 -- °C

Over-Temperature Protect TOTP -- 150 -- °C

Over-Temperature Protect

Hysteresis TOTP -- 20 -- °C

VBUS OVP Threshold Voltage VOVP V

BUS Rising 6.5 6.8 7.1 V

VBUS OVP Threshold Voltage

Hysteresis VOVP_Hys V

BUS Falling -- 200 280 mV

BASE

VBUS Attached Threshold

Voltage VBUS_ATT V

BUS Rising 3.8 4 4.2 V

VBUS Attached Threshold

Voltage Hysteresis VBUS_ATT_Hys V

BUS Falling -- 200 280 mV

RT9480

DS9480-04 December 2014 www.richtek.com

Typical Application Circuit

VBAT

VBUS

RT9480

PGNDBST

LXBST

GND

BUTTON

22, 23

20, 21

9, 25 (Exposed Pad)

1µF/25V

CIN

Input Power

1µH

10µF

VBAT

Button

10µF

CBAT

LED1

USBOUT1

LED3

LED2

USBOUT2

LED4

17, 18

TORCH

USB1

Output

1µF

COUT1

VBAT

Power

Display

VMID

SWIN2

CVMID

USB2

Output

1µF

COUT2

22µF x2

TP1

13 TP2

100k

Li-Bat

Prot-IC

RNTC

N-MOSFET

Semitec

103AT

10k

RT9480

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USBOUT Efficiency vs. Load Current

100

0 500 1000 1500 2000 2500

Load Current (mA)

Efficiency (%)

USBOUT = 5.1V, L = 1μH, COUT = 1μF

VBAT = 3.9V

VBAT = 3.7V

VBAT = 3.3V

Typical Operating Characteristics

USBOUT Voltage vs. Temperature

4.5

4.6

4.7

4.8

4.9

5.0

5.1

5.2

5.3

5.4

5.5

-50 -25 0 25 50 75 100 125

Temperature (°C)

Output Voltage (V)

USBOUT = 5.1V

VBAT = 3.3V

VBAT = 3.7V

VBAT = 3.9V

USBOUT Voltage vs. Load Current

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 500 1000 1500 2000 2500

Load Current (mA)

Output Voltage (V)

USBOUT = 5.1V

VBAT = 3.3V

VBAT = 3.7V

VBAT = 3.9V

Battery Regulation Voltage vs. Temperature

4.10

4.13

4.16

4.19

4.22

4.25

-50 -25 0 25 50 75 100 125

Temperature (°C)

Battery Regulation Voltage (V) 1

VIN = 5V, VBAT = Real Battery

105°C

ICHG Thermal Regulation vs. Temperature

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

-50 -25 0 25 50 75 100 125

Temperature (°C)

ICHG Thermal Regulation (mA

)

VIN = 5V, VBAT = Real Battery

VBUS OVP Threshold Voltage vs. Temperature

6.0

6.2

6.4

6.6

6.8

7.0

7.2

-50 -25 0 25 50 75 100 125

Temperature (°C)

OVP Threshold Voltage (V)

VBAT = Real Battery

Falling

Rising

RT9480

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Application Information

The RT9480 is a high integrated IC for Li-Ion battery power

bank. This chip includes a linear charger, a synchronous

Boost, two output load management, LED indicator and

torch function.

Pre-Charge Mode

When the output voltage is lower than 2.3V, the charging

current will be reduced to a fast-charge current ratio to

protect the battery life time.

Fast-Charge Mode

When the output voltage is higher than 2.5V, the charging

current will be equal to the fast-charge current with 1.2A.

Constant-Voltage Mode

When the output voltage is near 4.2V or 4.35V, the charging

current will fall below the termination current.

Re-Charge Mode

When the chip is in charge termination mode, the charging

current will gradually go down to zero. However, once the

voltage of the battery drops to below 4.05V or 4.2V, then

the charging current will resume again.

Charge Termination

When the charge current is lower than the charge

termination current ratio (10%) for VBAT > 4.05V or 4.2V

and the time is larger than the deglitch time (25ms), it will

be latched high unless the power is re-toggled.

Input DPM Mode

If the input voltage is lower than VDPM (4.5V), the input

current limit will be reduced to stop the input voltage from

dropping any further. This can prevent the IC from damaging

improperly configured or inadequately designed USB

sources.

Temperature Regulation

In order to maximize charge rate, the RT9480 features a

junction temperature regulation loop. If the power

dissipation of the IC results in junction temperature greater

than the thermal regulation threshold (105°C), the RT9480

will cut back on the charge current and disconnect the

battery in order to maintain thermal regulation at around

105°C. This operation continues until the junction

temperature falls below the thermal regulation threshold

(105°C) by the hysteresis level. This feature prevents the

maximum power dissipation from exceeding typical design

conditions.

Time Fault

The Fast-Charge Fault Time is set by 24hours.

When time fault happens, the charger cycle will be turned

off charging function.

Battery Pack Temperature Monitoring

The RT9480 features an external battery pack temperature

monitoring input. The TS input connects to the NTC

thermistor in the battery pack to monitor battery

temperature and prevent danger over temperature

conditions. If at any time the voltage at TS falls outside of

the operating range, charging will be suspended. The NTC

thermistor recommends using 10kΩ.

JEITA Function

For JEITA battery temperature standard :

CV regulation voltage will change at the following battery

Temp ranges 45°C to 60°C.

Synchronous Step-Up

The converter operates in fixed frequency PWM Mode

with 250kHz, Continuous Current Mode (CCM), and

Discontinuous Current Mode (DCM) with internal

MOSFETs.

4.35V or 4.2V

4.2V or 4.05V

100% Ichg

50% Ichg

010 4560

CCCC

RT9480

DS9480-04 December 2014www.richtek.com

Operation Method

Charge Mode : VBUS in and charging battery

Discharge Mode : USBOUT in and discharging for handheld

Chg-Dchg Mode : VBUS and USBOUT in, charging battery

and discharging handheld at the same time

Relax Mode : VBUS and USBOUT plug out

Button Mode

Button mode : When external handheld device plug in for

power bank, the USBOUT will turns on by button.

If device attched, RT9480 will count 12 hours

(RT9480GQW or AA02) or 3sec (AA01 or AA03) to turn

off USBOUT after detach.

AA01 and AA03. Please reference Product Name List.

Attach mean device plug in and loading > 100mA.

Detach mean device plug out and loading < 50mA.

Function Button Action Description

Charging NA

Micro-USB Adapter

plug-in : ON

After plugging in the external power source, the power

bank will be charged automatically without pressing the

button, and the LED battery indicator lights up at the

same time.

Micro-USB Adapter

plug-out : OFF

After unplugging the external power source, the power

bank stops being charged automatically without pressing

the button, and the LED battery indicator fades out at the

same time.

Discharging 0.1s

USB slave plug-in : ON After plugging in the H/H device and pressing the button,

the power bank starts to charge the device.

USB slave plug-out : OFF After unplugging the H/H device, the power bank stops

charging the device automatically without pressing the

button.

Check Battery

Capacity

0.1s

Press the button (short

press) one time : ON Press the button (short press), the LED battery indicator

lights up.

After 20sec : OFF After 20sec, the LED battery indicator fades out.

Torch 0.1s 0.1s

Double click the button

(short press) : ON Double click the button (short press), the torch light lights

up.

Double click the button

(short press : OFF Double click the button (short press) again, the torch light

fades out.

Button Function

RT9480

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BUTTON Press Timing

Define Button (Short/Long) Press Timing

Short press = min (0.1s)

Blank = min (0.1s)

SOC LED Flash and Running Timing

SOC LED Flash

0.5s

SOC LED Running

0.5s

0.5s 0.5s

LED Indicator Function

About LED indicator, it will follow below table to show

SOC. The LED current is 0.75mA.

●●●●

Low→High

● : LED ON, ○ : LED OFF, ● : LED FLASH

Battery Voltage Operation of Charging

 3700mV

●○○○

●●●○

●●○○

●●●●

 3700mV

 3940mV ●●●○

●●○○

●●●●

 3940mV

 4100mV

●●●○

●●●●

 4100mV

 4200mV ●●●●

4200mV ●●●●

Battery Voltage Operation of Discharging

 4200mV

 3880mV ●●●●

 3880mV

 3720mV ●●●○

 3720mV

 3500mV ●●○○

 3500mV

 3200mV ●○○○

 3200mV

 2800mV ●○○○

RT9480

DS9480-04 December 2014www.richtek.com

Figure 1. Derating Curve of Maximum Power Dissipation

Thermal Considerations

For continuous operation, do not exceed absolute

maximum junction temperature. The maximum power

dissipation depends on the thermal resistance of the IC

package, PCB layout, rate of surrounding airflow, and

difference between junction and ambient temperature. The

maximum power dissipation can be calculated by the

following formula :

PD(MAX) = (TJ(MAX) − TA) / θJA

where TJ(MAX) is the maximum junction temperature, TA is

the ambient temperature, and θJA is the junction to ambient

thermal resistance.

For recommended operating condition specifications, the

maximum junction temperature is 125°C. The junction to

ambient thermal resistance, θJA, is layout dependent. For

WQFN-24L 4x4 package, the thermal resistance, θJA, is

28°C/W on a standard JEDEC 51-7 four-layer thermal test

board. The maximum power dissipation at TA = 25°C can

be calculated by the following formula :

PD(MAX) = (125°C − 25°C) / (28°C/W) = 3.57W for

WQFN-24L 4x4 package

The maximum power dissipation depends on the operating

ambient temperature for fixed TJ(MAX) and thermal

resistance, θJA. The derating curve in Figure 1 allows the

designer to see the effect of rising ambient temperature

on the maximum power dissipation.

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0 25 50 75 100 125

Ambient Temperature (°C)

Maximum Power Dissipation (W) 1

Four-Layer PCB

Layout Consideration

The PCB layout is an important step to maintain the high

performance of the RT9480.

Both the high current and the fast switching nodes demand

full attention to the PCB layout to save the robustness of

the RT9480 through the PCB layout. Improper layout might

show the symptoms of poor line or load regulation, ground

and output voltage shifts, stability issues, unsatisfying

EMI behavior or worsened efficiency.For the best

performance of the RT9480, the following PCB layout

guidelines must be strictly followed.

Place the input and output capacitors as close as

possible to the input and output pins respectively for

good filtering.

Care should be taken for a proper thermal layout. Wide

traces, connecting with vias through the layers, provides

a proper thermal path to sink the heat energy created

from the device and inductor. Keep the main power traces

as wide and short as possible. Recommend as below :

VBUS trace > 40mil;

VBAT trace > 80mil;

LXBST trace > 80mil;

VMID trace > 40mil;

USBOUT1 trace > 80mil;

USBOUT2 trace > 40mil.

The switching node area connected to LX and inductor

should be minimized for lower EMI.

Connect the GND pin, PGNDBST pin and Exposed Pad

together to a strong ground plane for maximum thermal

dissipation and noise protection.

Directly connect the output capacitors to the feedback

network of each channel to avoid bouncing caused by

parasitic resistance and inductance from the PCB trace.

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Figure 2. PCB Layout Guide

78 10 11 12

19202124

TP2

LED2

LED4

GND

TORCH

VMID

USBOUT1

BUTTON

SWIN2

LED3 NC

USBOUT2

LED1

VBAT

VBUS

PGNDBST

LXBST

USBOUT1

PGNDBST

GND

TP1

GND

CMID

VBAT

VBAT GND

GND

VMID

GND

LX should be connected to Inductor by

wide and short trace, keep sensitive

compontents away from this trace

Input capacitors

must be placed

as close as

possible to the

Input pins.

USBOUT2

Connect the Exposed Pad to a ground

plane.

VMID

VBUS

VMID

RNTC

COUT2

COUT1

CIN

CBAT

USBOUT1

Output

capacitors must

be placed as

close as

possible to the

Output pins.

2223

Connect GND

Pin and PGND

Pin to Exposed

Pad.

RT9480

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Richtek Technology Corporation

14F, No. 8, Tai Yuen 1st Street, Chupei City

Hsinchu, Taiwan, R.O.C.

Tel: (8863)5526789

Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should

obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot

assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be

accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third

parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.

Outline Dimension

SEE DETAIL A

W-Type 24L QFN 4x4 Package

Note : The configuration of the Pin #1 identifier is optional,

but must be located within the zone indicated.

DETAIL A

Pin #1 ID and Tie Bar Mark Options

Dimensions In Millimeters Dimensions In Inches

Symbol Min Max Min Max

A 0.700 0.800 0.028 0.031

A1 0.000 0.050 0.000 0.002

A3 0.175 0.250 0.007 0.010

b 0.180 0.300 0.007 0.012

D 3.950 4.050 0.156 0.159

Option 1 2.400 2.500 0.094 0.098

D2 Option 2 2.650 2.750 0.104 0.108

E 3.950 4.050 0.156 0.159

Option 1 2.400 2.500 0.094 0.098

E2 Option 2 2.650 2.750 0.104 0.108

e 0.500 0.020

L 0.350 0.450 0.014 0.018

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