ViewSonic Corporation
18
BA9741F: PWM control, voltage range for working: 3.6~35V, Has such functions as short-voltage protection,
Over-voltage protection, over-current protection and etc. The function of each pin is as follows:
PIN NAME FUNCTION PIN NAME FUNCTION
1 CT External timing capacitor 9 VCC Power supply
2 RT External timing resistor 10 2OUT Output 2
3 1IN+
Positive input for error amplifier
1
11 2DTC
Output 2 dead time/soft start
setting
4 1IN-
Positive input for error amplifier
2
12 2FBK Error amplifier 2 output
5 1FBK Error amplifier 1 output 13 2IN+
Positive input for error
amplifier
6 1DTC
Output 1 dead time/soft start
setting
14 2IN-
Positive input for error
amplifier
7 1OUT Output 1 15 SCP Timing latch setting
8 GND Ground 16 REF
Reference voltage output
(2.5v)
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