STODD01 Datasheet, PDF (5/31 Pages) STMicroelectronics – Synchronous rectification

STODD01
3
Pin configuration
Figure 2. Pin connection (top through view)
Pin configuration
Table 5. Pin description
Pin n°
Symbol
Name and function
1
GND_P
Power Ground pin (ch1)
2
FB1
Step-up feedback pin (ch1)
3
V_{IN_A}
Power Supply for internal analog circuits
4
FB2
Step-down feedback pin (ch2)
5
GND_P
Power Ground pin (ch2)
6
SW2
Step-down switching pin (ch2)
7
V_{IN_P}
Power input voltage pin
8
SW3
Step-down switching pin (ch3)
9
GND_P
Power Ground pin (ch3)
10
FB3
Step-down feedback pin (ch3)
11
GND_A
Analog Ground pin
12
OUT1
Step-up output voltage
13
TX
S-Wire pin. If connected to GND, V_FB1=0.8V ⁽¹⁾
14
SW1
Step-up switching pin (ch1)
Enable pin. Connecting the pin to a voltage higher than 1.2 V the step-up is
15
EN
ON.Connecting the pin to a voltage lower than 0.4 V the step-up is OFF,
resulting in no current flow to the load
16
Reset
Reset pin. It is an open drain output
Exposed pad Ground and thermal dissipation pad
1. If this function is not used, the TX pin must be connected to GND
Doc ID 17789 Rev 2
5/31