Datasheet AP4054X4000M, AP4054X4025M, AP4054X4050M, AP4054X4075M, AP4054X4100M Datasheet (Chipown) [ru]

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AP4054

STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION IN THINSOT

■ DESCRIPTION

The AP4054 is a completeconstant-current/constant-voltagelinear chargerfor single cell lithium-ion

batteries. Its ThinSOT package and low external component count make the AP4054 ideally suited for
portable applications. Furthermore, the AP4054 is specifically designed to work within USB power
specifications.

No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET

architecture. Thermal feedback regulates the charge current to limit the
die temperatureduring high power operationor high ambient temperature. The charge voltage is fixed at

4.2V, and the charge current can be programmed externally with a single resistor. The AP4054
automatically terminates the charge cycle when the charge current drops to 1/10ththe programmed

value after the final float voltage is reached.

When the input supply (wall adapter or USB supply) is removed, the AP4054 automatically enters a

low current state, dropping the battery drain current to less than 2A. The AP4054 can be put into
shutdown mode, reducing the supply current to 25A.

Other features include charge current monitor, under-voltage lockout, automatic recharge and a

status pin to indicate charge termination and the presence of an input voltage.

■ FEATURES

Programmable Charge Current Up to 800mA



No MOSFET, Sense Resistor or Blocking Diode Required



Complete Linear Charger in ThinSOT Package for single Cell Lithium-Ion Batteries



Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge



Rate Without Risk of Overheating
Charges Single Cell Li-Ion Batteries Directly from USB Port



Preset 4.2V Charge Voltage with 1% Accuracy



Charge Current Monitor Output for Gas Gauging



Automatic Recharge



Charge Status Output Pin



C/10 Charge Termination



25A Supply Current in Shutdown



2.9V Trickle Charge Threshold



Soft-Start Limits Inrush Current



Available in 5-Lead SOT-23 Package



■ APPLICATIONS

 Cellular Telephones, PDAs, MP3 Players
 Charging Docks and Cradles

 Bluetooth Applications

■ PACKAGE

 SOT-23-5

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Standalone Linear Li-Ion Battery Charger with Thermal Regulation

■ BLOCK DIAGRAM

AP4054

AP4054

Figure 1

■ ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL MAXIMUM RATING UNIT

Input Supply Voltage V

PROG pin Voltage Vprog VSS-0.3～Vcc+0.3

BAT pin Voltage Vbat Vss-0.3～7

CHAG pin Voltage Vchrg VSS-0.3～VSS+10

BAT pin Current Ibat 800 mA

PROG pin Current Iprog 800 uA

OperatingAmbient Temperature Topa -40～+85

StorageTemperature Tstr -65～+125

Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical

damage. These values must therefore not be exceeded under any conditions.

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cc

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VSS-0.3～VSS+10

V

°C

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AP4054

■ Electrical Characteristics

Parameter Symbol CONDITION MIN TYP MAX UNIT

Input supply voltage Vcc 4.25 6.5 V

Charge mode,Rprog=10K 300 2000 uA

Input supply current Icc

connected,Vcc<Vbat or Vcc<Vuv)

Regulated Output Voltage Vfloat 0C TA 85C, IBAT = 40mA 4.158 4.2 4.342 V

BAT pin Current Ibat

Trickle charge current Itrikl Vbat<Vtrikl,Rprog=2k 20 45 70 mA

Trickle charge Threshold Voltage Vtrikl Rprog=10K，Vbat Rising 2.8 2.9 3.0 V

Trickle voltage hysteresis

voltage

Vcc Undervoltage lockout

Threshold

Vcc undervoltage lockout

hysteresis

voltage

voltage

Threshold

PROG pin Voltage Vprog Rprog=10k, Current mode 0.93 1.0 1.07 V

CHRG pin weak pull-down Current Ichrg Vchrg=5V 8 20 35 uA

CHRG pin Output low voltage Vchrg Ichrg=5mA 0.35 0.6 V

Recharge Battery threshold

Voltage

Vtrhys Rporg=10k 60 80 110 mV

Vuv From Vcc low to high 3.7 3.8 3.93 V

Vuvhys 150 200 300 mV

Vmsd

Vasd

Iterm

ΔVrecg VFLOAT - VRECHRG 100 200 mV

Standby mode 200 500 uA

Shutdown mode(Rprog not

Rprog=10k,Current mode 93 100 107 mA

Rprog=2k,Current mode 465 500 535 mA

Standby mode,Vbat=4.2V 0 -2.5 -6 uA

Shutdown mode

Sleep mode,Vcc=0V

PROG pin rising 1.15 1.21 1.30 VManual shutdown threshold

PROG pin falling 0.9 1.0 1.1 V
Vcc from low to high 70 100 140 mVVcc-Vbat Lockout Threshold
Vcc from high to low 5 30 50 mV

Rprog=10k 0.085 0.10 0.115 mA/mAC/10 Termination Current

Rprog=2k 0.085 0.10 0.115 mA/mA

25 50 uA

1 2

1 2

uA
uA

■ TYPICAL APPLICATION CIRCUIT

Basic circuit

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Typical circuit

AP4054

■ TYPICAL PERFORMANCE CHARACTERISTICS

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AP4054

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■ Ordering Information

AP4045①②③④⑤

DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION

① Type

The first part of regulator

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Output Voltage

X Without trickle charge
Y With trickle charge

0 4.0
1 4.1②
2 4.2

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③

④ Packaging Types M SOT23-5

⑤ Device Orientation

A ②00

The second part of

regulator Output Voltage

B ②25
C ②50
D ②75

R Embossed tape: Standard feed
L Embossed tape: Reverse feed

■ MARKING

● SOT23-5

①Represents the product name

SYMBOL PRODUCT NAME

2 AP4054◆◆◆M◆

AP4054

②Represents the type of the trickle charge voltage

SYMBOL Product Series

X AP4054X◆◆M◆
Y

③Represents the regulator output voltage

SYMBOL Voltage SYMBOL Voltage

A 4.0 H 4.150
B 4.025 K 4.175
C 4.05 L 4.2
D 4.075 M 4.225
E 4.1 N 4.250

F 4.125 P 4.275

④Represents the assembly lot no.

0 to 9，A to Z, reversed character of 0 to 9 and A to Z repeated(G,I,J,O,Q,W excepted)

AP4054Y◆◆M◆

■ PIN CONFIGURATION

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AP4054

■ PIN ASSIGNMENT

Pin Number

SOT23-5

1 CHRG
2 GND
3 BAT
4 VCC

5 PROG

Pin Name

■ PIN FUNCTION

CHRG (Pin 1): Open-Drain Charge Status Output. When the battery is charging, the CHRG pin is pulled low
by an internal N-channel MOSFET. When the charge cycle is completed,a weak pull-downof approximately
20A is connected to the CHRG pin, indicating an “AC present”condition. When the AP4054 detects an

undervoltage lockout condition, CHRG is forced high impedance.

GND (Pin 2): Ground.

BAT (Pin 3): Charge Current Output. Provides charge current to the battery and regulates the final float

voltage to 4.2V. An internal precision resistor divider from this pin sets the float voltage which is
disconnected in shutdown mode.

VCC (Pin 4): Positive Input Supply Voltage. Provides power to the charger. VCC can range from 4.25V to

6.5V and should be bypassed with at least a 1F capacitor.When VCC drops to within 30mV of the BAT pin
voltage, the AP4054enters shutdown mode, dropping IBAT to less than 2A.

PROG (Pin 5): Charge Current Program, Charge Current Monitor and Shutdown Pin. The charge current is
programmed by connecting a 1% resistor, RPROG, to ground. When charging in constant-current mode,

this pin servos to 1V. In all modes, the voltage on this pin can be used to measure the charge current using
the following formula:

IBAT = (VPROG/RPROG) •1000

The PROG pin can also be used to shut down the charger. Disconnecting the program resistor from ground
allows a 3A current to pull the PROG pin high. When it reaches the 1.21V shutdown threshold voltage, the
charger enters shutdown mode, charging stops and the input supply current drops to 25A. This pin is also

clamped to approximately 2.4V. Driving this pin to voltages beyond the clamp voltage will draw currents as
high as 1.5mA. Reconnecting RPROG to ground will return the charger to normal operation.

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■ PACKAGE INFORMATION

● SOT23-5

AP4054

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