ST3S01LED-TR Просмотр технического описания (PDF) - STMicroelectronics

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ST3S01LED-TR

BATTERY CHARGE I.C.

STMicroelectronics 

ST3S01LED

PIN DESCRIPTION

Pin N°

1

2

3

4

5

6

7

8

Symbol

Name and Function

VBATT

BATTERY pin: input pin when reverse mode is selected; output pin when in

charge or precharge mode

CMD-REVERSE Reverse Command pin: Enables the reverse mode when connected to a positive

voltage higher than 1.2V. Logic pin internally pulled down.

CMD-PWM

PWM Command pin: allows to control the precharge or charge switch in PWM

mode (refer to the Table 1 for the different operating modes). Logic pin internally

pulled down.

CMD-MODE Mode Command pin: allows to switch between precharge and charge mode (refer

to OPERATING MODES Table). Logic pin internally pulled down.

GND

GND Pin

CHARGER-OK

CHARGER-OK output pin; open drain N-channel MOSFET that is in high

impedance when the VCHARGE voltage drops below 2.5V and CMD-REVERSE is

low. When the reverse function is activated, this open drain have the same

information of the (VCHARGE -VBATT) FLAG.

FLAG

FLAG pin (VCHARGE -VBATT): open drain N-channel MOSFET that sinks current

when the VCHARGE voltage is higher than the VBATT.

VCHARGE

CHARGER SUPPLY pin: input pin when charge or precharge mode is selected;

output pin when in reverse mode.

OPERATING MODE

CMD-PWM

0

0

1

1

CMD-MODE

0

1

0

1

Operating Function Selected

PRECHARGE MODE (Default state)

CHARGE MODE

CHARGE and PRECHARGE switches are open

CHARGE and PRECHARGE switches are open

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