VFQFPN16(2008) 데이터 시트보기 (PDF) - STMicroelectronics

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VFQFPN16
(Rev.:2008)

USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer

STMicroelectronics 

L6924U

2

Pin description

Figure 3. Pin connection (top view)

Pin description

2.1

Pin description

Table 2.

Pin

1

2

3-4

5

6

7

8

Pin functions

I/O

Name

Pin description

I

VIN Input pin of the power stage.

Supply voltage pin of the signal circuitry.

I

VINSNS The operating input voltage range is from 2.5 V and 12 V, and the

start-up threshold is 4 V.

O

ST2-ST1 Open-collector status pins.

Maximum charging time program pin.

I

TPRG

It must be connected with a capacitor to GND to fix the maximum

charging time, see Chapter 7.8: Maximum charging time on

page 22.

-

GND Ground pin.

Shutdown pin.

I

SD When connected to GND enables the device; when floating

disables the device.

Temperature monitor pin.

It must be connected to a resistor divider including an NTC or PTC

I

TH resistor. The charge process is disabled if the battery temperature

(sensed through the NTC or PTC) is out of the programmable

temperature window see Chapter 8.1: NTC thermistor on page 24.

5/38

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