L6924U datasheet(5/38 Pages) STMICROELECTRONICS

No de pièce	L6924U

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

PDF	38 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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L6924U

Pin description

5/38

Pin description

Figure 3.

Pin connection (top view)

2.1

Pin description

Table 2.

Pin functions

I/O

Name

Pin description

VIN

Input pin of the power stage.

VINSNS

Supply voltage pin of the signal circuitry.

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

start-up threshold is 4 V.

3-4

ST2-ST1 Open-collector status pins.

TPRG

Maximum charging time program pin.

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.

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

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.

L6924U Fiches technique(PDF) 5 Page - STMicroelectronics