MB3782_1 Datasheet, PDF (2/27 Pages) Fujitsu Component Limited. – ASSP Power Supplies BIPOLAR Switching Regulator Controller

MB3782
s PIN ASSIGNMENT
TOP VIEW
VREF
1
CT 2
RT 3
+ IN1 4
– IN1 5
FB1 6
DTC1 7
PUT1 8
GND 9
OUT2 10
20 VCC
19 CTL
18 – IN3
17 FB3
16 DTC3
15 OUT3
14 SCP
13 – IN2
12 FB2
11 DTC2
(DIP-20P-M01)
(FPT-20P-M01)
s PIN DESCRIPTION
Pin No.
Pin Name
1
VREF
2
CT
3
RT
4
+IN1
5
–IN1
6
FB1
7
DTC1*¹
2
I/O
Description
2.50 V (typ) voltage output: provides load current up to 3 mA,
O
for use as error amplifier reference input and for dead time
setting.
—
Oscillator timing capacity connection: should be used in the
capacity range 150 to 15000 pF.
Oscillator timing resistor connection: should be used in the
—
resistance range 5.1 to 100 kΩ. This pin can also provide
output at voltage level VREF/2, for use as error amplifier
reference input.
I
Error amplifier 1 non-inverting input pin.
I
Error amplifier 1 inverting input pin.
Error amplifier 1 output pin: connect resistor and capacitor
O
between this pin and the –IN1 pin to set gain and adjust
frequency characteristics.
OUT1 dead time setting pin: VREF voltage is divided by an
I
external resistor and applied to set dead time. Also, a capacitor
may be connected between this pin and the GND pin to perform
soft start operations.
(Continued)