STCF03 Datasheet, PDF (8/35 Pages) STMicroelectronics – High power white LED driver with I2C™ interface

Pin configuration
3
Pin configuration
Figure 2. Pin connections (bottom view)
STCF03
QFN20 (3x3)
TFBGA25 (3x3)
Table 2. Pin description
Pin n° for
QFN20
Pin n° for
TFBGA25
Symbol
Name and function
1
E1, D2
VLX2 Inductor connection
2
B3
RX Rx resistor connection
3
A4
NTC NTC resistor connection
4
D1, C2
VOUT Output voltage
5
B5
FB1 Feedback pin [I_LED*(R_FL+R_TR)]
6
A5
FB2 R_TR bypass
7
B4
FB2S Feedback sensing pin [I_LED*R_FL]
8
E2
GND Signal ground
9
D4
ADD _I²_{C address selection}
10
D5
AUXL Auxiliary LED output
11
C5
TMSK TX mask input.
12
B1, C1 PVBAT Power supply voltage
13
A3
VBAT Supply voltage
14
A2
VLX1A Inductor connection
15
A1, B2 VLX1B Inductor connection
16
E5
SCL _I²_{C clock signal}
17
E3
SDA _I²_{C data}
18
C3, D3
PGND Power ground
19
E4
ATN Attention (open drain output, active LOW)
20
C4
TRIG Flash trigger input
Exposed pad
PGND To be connected to the PCB ground plane for optimal electrical and
thermal performance.
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