STBC21 Datasheet, PDF (8/54 Pages) STMicroelectronics – LI+ battery charger with thermal regulation

Pin configuration
2
Pin configuration
STBC21
Figure 3. Pin connections (top through view)
VCC
1
PHC
2
VCP
3
VREF
4
RES2
5
RES1
6
GND
7
14
13
12
11
10
9
8
AM10433v 1
LED2
LED1
ISET
BAT
VBAT_SNS
TEMP
RES3
Table 3.
Pin n°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin description
Symbol
Function
VCC
Input supply voltage
PHC
VCP
Photo coupler driver
Compensation pin
VREF Voltage reference for external NTC
RES2 I²C bi-directional data - pulled high
RES1
GND
I²C clock - pulled high
Ground pin
RES3 Reserved
TEMP Input from temperature sensor
VBAT_SNS Battery voltage sensing
This pin provides an accurate output voltage and the charge current
BAT
following the charging algorithm. Only 50 µA reverse current can flow into
the device when in standby mode
ISET
Fast-charge current setting
LED1
Open drain. See Appendix E & F
LED2
Open drain. See Appendix E & F
EXPOSED
PAD
Not connected
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Doc ID 023256 Rev 1