Datasheet

L6924D Pins description and connection diagrams
Doc ID 11908 Rev 9 5/38
2 Pins description and connection diagrams
Figure 3. Pins connection (top view)
2.1 Pin description
V
OSNS
I
END
V
INSNS
V
IN
GND SD
ST1
ST2
V
OPRG
I
PRG
T
PRG
TH
V
OSNS
I
PRE
I
END
V
REF
V
OUT
V
PRE
Table 2. Pin functions
Pin I/O Name Pin description
1I V
IN
Input pin of the power stage.
2IV
INSNS
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 O ST
2
-ST
1
Open-collector status pins.
5IT
PRG
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 20
6 - GND Ground pin.
7I SD
Shutdown pin.
When connected to GND enables the device; when floating disables the device.
8I TH
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.
9IV
OPRG
Output voltage selection pin.
V
OUT
= 4.1 V if left floating. V
OUT
= 4.2 V if connected to GND.
10 I V
OSNS
Output voltage sense pin.
It senses the battery voltage to control the voltage regulation loop.
11 O V
OUT
Output pin. (connected to the battery)