Diodes AUR9807 User Manual

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Data Sheet

General Description

The AUR9807 is a single-cell Li-ion charger IC with system power management feature. It charges the battery and power the system simultaneously. The maximum charging current (up to 1.5A) is set by external resistor for fast charging. The output voltage for the system is regulated to a nominal value (three different versions available: 4.4V, 5V or 6V); the actual value of the output voltage depends on the input voltage from the adapter, the charging current and the system loading. With the decrease of the input voltage or the increase of the system loading current, the output voltage drops. When the output voltage drops to a predetermined value (V is activated and tries to maintain the output voltage at V loading with first priority and reduce the charging current temporarily, i.e. under heavy load condition, the AUR9807 charges the battery with the remaining available current to keep the output voltage at V In this manner, the charge and discharge cycle of the battery can be reduced.

It is possible that the AUR9807 fails to maintain the output voltage at V system loading current exceeds the capability of the current-limiting AC adapter. In this scenario, the output voltage drops to the battery voltage, and the system is allowed to draw current from the battery.

The AUR9807 is available in QFN-4.5×3.5-20 package.

), the Active Power Management function

APM-REG

; the AUR9807 will suffice the system

APM-REG

; for example, when the

APM-REG

APM

Features

• QFN Package

• Active Power Management (APM) for Simultaneously Powering the System and Charging the Battery

• Total Current Supported Up to 2 Amperes

(System Loading Having Higher Priority on the Budget)

• Automatic Power Source Selection (AC Adapter

or Battery)

• 40m Power Path for the Battery to Supply the

System Power Efficiently

• Junction Temperature Detection and Thermal

Regulation During Charging Process

• External LED Indicating Charger and Power

Good Status as Well as Fault Condition

• Thermal, Short-Circuit, and Reverse Current

Protection

• Short-Circuit Protection in the Low Power

Consumption Sleep Mode

• SYSOFF Function to Cut Off the Path Between

.

the System and the Battery

• Built-in Over Voltage Protection up to 18V

Applications

• Battery-Powered Devices or Equipment

• Mobile Phones, Digital Cameras and MP3

Players

• Radios, Other Hand-Held Games and Instruments

• Solar Power System

Figure 1. Package Type of AUR9807

QFN-4.5×3.5-20

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

1

Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Pin Configuration

D Package (

Pin 1 Mark

STAT1

2

QFN-4.5×3.5-20

VREF

1

20

)

GND

19

GND

STAT2

BAT

ISET2

MODE

CE

IN

3

4

5

6

Exposed

Pad

7

8

9

10

11

18

17

16

15

14

13

12

/PG

OUT

TMR

APM

TS

ISET1

SYSOFF

Figure 2. Pin Configuration of AUR9807 (Top View)

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

2

Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Pin Description

Pin Number I/O Pin Name Function

1 O VREF

2 O STAT1 Charge status flag 1 (open-drain)

3 O STAT2 Charge status flag 2 (open-drain)

4 I IN Chip input voltage

5 , 6 I/O BAT

7 I ISET2

8 I MODE Set AUR9807 in AC(High) or USB(Low) mode

Internal reference; VREF output capacitor not required, but one with a value of 0.1µF is recommended.

Battery connection; charging or discharging all through this pin USB mode total current selection (High=450mA, Low= 90mA) and AC mode charge current selection (High=Full current, Low=half current)

9 I CE Chip enable (active high)

10 I/O ISET1 Set the maximum charging current

11 I SYSOFF Cut off the power path between the battery and the output pin

12 I/O TS Battery Temperature sensing

13 I APM

14 I/O TMR

15 , 16 , 17 O OUT System output

18 O /PG Power-good status flag (open-drain)

19 , 20 I GND Chip Ground

Active Power Management set point ※ no need for capacitors Timer program by external resistor connected to this pin. Tying TMR and VREF together to disable the safety timer

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

3

Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Functional Block Diagram

4

IN

UVLO

Power Source

V

SET

SYSOFF

GND

TMR Oscillator

APM

11

19, 20

14

13

Selection

100mA 500mA

V

OUT

OUT(REG)

I

AMP

V

ISENSE

V

BAT

BAT(REG)

V

SET

V

APM

Short-Circuit

Recovery

Q1

V

I(ISET1)

V

SET

T

J(REG)

15, 16, 17

V

OUT

10

V

I(ISET1)

5, 6 V

1

BAT

VREF

OUT

ISET1

BAT

3.3V

I

SENSE

BAT

Fault

Recovery

T

J

Recovery

Short-Circuit

V

BAT

V

OUT

Q2

1V

V

HTF

Thermal

Shutdown

V

LTF

AC Charge Enable

BAT Charge Enable

500mA/100mA

TS

1V

12

I

TS

Fast Precharge

MODE

CE

8

9

V

BAT

V

RCH

V

I(ISET1)

V

TERM

Power Source Selection

Recharge

V

BAT

LOWV

V

BAT

V

IN

Precharge

Termation

Sleep

Charge

Control Timer

and Display

Logic

1C - 500mA

C/S - 100mA

18

7

ISET2

/PG

2

STAT1

3

STAT2

Figure 3. Functional Block Diagram of AUR9807

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

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Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Ordering Information

AUR9807

Circuit Type

Package

QFN-4.5x3.5-20

Temperature

Output Voltage VF: 4.4V, CV Mode DF: 4.4V, Done VI: 5V, CV Mode DI: 5V, Done VS: 6V, CV Mode DS: 6V, Done

CV mode: After charge done, charger will stay in constant voltage mode until time out. Done: After charge done, charger will shut down until the battery voltage drops below the battery recharge threshold.

Range

-40 to 85°C

Output Voltage Part Number Marking ID

4.4V, CV Mode AUR9807VFGD A9807VFG Tape & Reel

4.4V, Done AUR9807DFGD A9807DFG Tape & Reel

5V, CV Mode AUR9807VIGD A9807VIG Tape & Reel

5V, Done AUR9807DIGD A9807DIG Tape & Reel

6V, CV Mode AUR9807VSGD A9807VSG Tape & Reel

6V, Done AUR9807DSGD A9807DSG Tape & Reel

D: QFN-4.5x3.5-20

G: Green

Packing

Type

BCD Semiconductor's Pb-free products, as designated with "G" in the part number, are RoHS compliant and green.

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

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Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Supply Input Voltage VIN -0.3 to 18 V

V

, VCE, V

BAT

, V

V

MODE

, V

V

ISET2

STAT1

Input Voltage

V

Input Current IIN 3.5 A

I

Output Current

I

Output Source Current (In Regulation at 3.3V V

REF

)

Output Sink Current I

/PG

, I

I

STAT1

Thermal Resistance (Junction to Ambient)

Storage Temperature T

Junction Temperature TJ -40 to 150 °C

Lead Temperature (Soldering, 10 Seconds)

ESD (Human Body Model) V

ESD (Machine Model) VMM 200 V

, V

APM

, V

OUT

, V

V

TS

-0.3 to V

REF

-0.3 to V

TMR

4 A

OUT

-4 to 1.5 A

BAT

30 mA

REF

, I

θ

JA

-65 to 150 °C

STG

,

/PG

,

ISET1

,

STAT2

15 mA

STAT2

-0.3 to 7 V

+0.3 V

OUT

+0.3 V

OUT

52 °C/W

300 °C

2000 V

HBM

Note 1: Stresses greater than those listed under “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 under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

AUR9807DSGD, AUR9807VSGD 4.35 6.3 V

Supply Voltage

AUR9807DFGD,AUR9807VFGD, AUR9807DIGD, AUR9807VIGD

V

IN

4.35 5.5 V

Input Current IIN 2 A

Operating Junction Temperature Range TOP -40 125 °C

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

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Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Electrical Characteristics

TA=25oC, VIN is within the recommended range, unless otherwise specified.

Parameter Symbol Test Condition Min Typ Max Unit

Active Supply Current I

Sleep Mode Current into BAT Pin

Input Pin Standby Current

BAT Pin Standby Current I

Charge Done Current, BAT

I

IN(STDBY)

BAT(STDBY)

I

BAT(TERM)

Q1,Q2 DROP-OUT VOLTAGE

IN to OUT Dropout Voltage BAT to OUT Dropout Voltage

V

DO(IN-OUT)

V

DO(BAT-OUT)VBAT

VOLTAGE REGULATION

Regulation V 9807VF 9807DF Regulation V 9807VI 9807DI Regulation V 9807VS 9807DS

OUT

V

APM REGULATION

VIN>4.35V 1.1 2 mA

IN(SPLY)

BAT(SLP)

V

IN<VBAT

2.6V<V

,

BAT<VBAT(REG)

2.5 5 µA No load at OUT pin V

<6V, Total current flow

IN

into IN pin with CE pin

200 µA low; no load Total current flow into BAT pin with input source

45 65 µA present and CE pin low Current flows into BAT pin after the termination of

1 5 µA the charging process

MODE=High , IIN=1A 300 475 mV

OUT(REG)

> 4V , I

VIN>4.4V+V

VIN>5V+V

VIN>6V+V

=1A 40 100 mV

BAT

DO(IN-OUT)

4.4 4.5 V

4.9 5.1 V

6 6.3 V

APM Set Point V

APM Current Source I

APM-SET

APM Scale Factor SF V

V

APM-SET<VOUT

2.6 3.8 V

Input present 95 100 105 µA

APM-REG=VAPM-SET

x SF 1.139 1.15 1.162

BATTERY SUPPLEMENT MODE

V

<

Run Battery Supplement Mode

Escape Battery Supplement Mode

V

BSUP1

BSUP2

V

BAT

>2V

OUT

V

BAT

60mV

–

V

>

OUT

–

V

BAT

20mV

V

CHARGING-PRECHARGE

Precharge to Fast-charge Transition Voltage

Precharge Current Range I

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

V

Voltage on BAT 2.9 3 3.1 V

LOWV

10 150 mA

PRECHG

7

Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

Electrical Characteristics (Continued)

TA=25oC, VIN is within the recommended range, unless otherwise specified.

Parameter Symbol Test Condition Min Typ Max Unit

Precharge Set Voltage V

De-glitch Time Between Fast Charge and Precharge Transition

225 250 275 mV

PRECHG

t

=100ns,

FAL L

10mV overdrive,

t

DGLF

decreasing below

V

BAT

22.5 ms

threshold

CHARGING-CURRENT REGULATION

Fast Charge Current Range

BAT to OUT Pull-up R

Battery Charge Current Set Voltage

(1)

Charge Current Set Factor

V

I

V

CHG

PBAT

SET

BAT>VLOWV

V

<1V 1000 

BAT

Voltage on ISET1 2.4 2.5 2.6 V

100mA<I

K

SET

10mA<I

, Mode=High 100 1000 1500 mA

<1.5A 375 425 450

CHG

<100mA 300 450 600

CHG

USB MODE INPUT CURRENT LIMIT

ISET2=High 400 500

USB Input Current Range I

USB

mA

ISET2=Low 80 90 100

CHARGING VOLTAGE REGULATION

Battery-charge-voltage 4.2 V

Battery Charge Voltage Regulation Accuracy

V

BAT(REG)

TA=25°C -0.5 0.5 %

-1 1 %

CHARGE TERMINATION DETECTION

Charge Done Detection Current

Charge Done Set Voltage, Measured on ISET1

I

TERM

V

TERM

V

BAT>VRCH

I

TERM

R

SET

V

BAT>VRCH

V

BAT>VRCH

,

=(K

SET

x V

TERM

)/

10 150 mA

, Mode=High 230 250 270

, Mode=Low 95 100 130

mV

TEMPERATURE SENSE COMPARATORS

High Voltage, Low Temperature Threshold Low Voltage , High Temperature Threshold Current Source for Temperature Sense

Temp fault at VTS>V

V

LTF

Temp fault at VTS<V

V

HTF

95 100 105 µA

I

TS

2.5 V

LTF

0.5 V

HTF

BATTERY RECHARGE THRESHOLD

Recharge Threshold Voltage

V

RCH

(1) For half-charge rate, V

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

is 1.25V.

SET

8

V

-0.125

BAT(RE

G)

V

BAT(RE

-0.1

G)

V

BAT(RE

G)

-0.075

V