Pin Descrip�on

Pin Name

Pin Number

TEMP

1

Connec�ng TEMP pin to NTC thermistor’s output in Lithium ion ba�ery pack. If TEMP

pin’s voltage is below 45% or above 80% of supply voltage VIN for more than 0.15S, this

means that ba�ery’s temperature is too high or too low, charging is suspended. The

temperature sense func�on can be disabled by grounding the TEMP pin.

PROG

2

precharge mode, the PROG pin’s voltage is regulated to 0.2V. When in constant charge

current mode, the PROG pin’s voltage is regulated to 2V. In all modes during charging,

the voltage on PROG pin can be used to measure the charge current as follows:

GND

3

GND

Vcc

4

VIN is the power supply to the internal circuit. When VIN drops to within 30mv of the

BAT pin voltage, FC9056 enters low power sleep mode, dropping BAT pin’s current to

less than 2uA

BAT

5

Connect the posi�ve terminal of the ba�ery to BAT pin. BAT pin draws less than 2uA

current in chip disable mode or in sleep mode. BAT pin provides charge current to the

ba�ery and provides regula�on voltage of 4.2V.

STDBY

6

When the ba�ery Charge Termina�on, the STDBY pin is pulled low by an internal switch,

otherwise STDBY pin is in high impedance state.

CHRG

7

When the ba�ery is being charged, the CHRG pin is pulled low by an internal switch,

otherwise CHRG pin is in high impedance state.

CE

8

A high input will put the device in the normal opera�ng mode. Pulling the CE pin to low

level will put the FC9056 into disable mode. The CE pin can be driven by TTL or CMOS

logic level.

Ordering Informa�on

FC9056

Circuit Type

Packing:

Blank：Tube

R: Tape and Reel

BLANK

M: SOP-8E

2018. 05. 15

3/9

Revision No : 0

FC9056

1A Stand alone Linear Li-Ion Battery Charger with Thermal Regulation