L6924UTR datasheet(5/37 Pages) STMICROELECTRONICS

部件名	L6924UTR

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

PDF	37 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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5 / 37 page

L6924U

Pin description

Doc ID 14716 Rev 2

5/37

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 ranges from 2.5 V to 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 7.7: Maximum charging time on

page 21.

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 23.

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