Справочник Пользователя для Fujitsu MB3788

3

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Note: The alphabetic characters in parenthesis above indicate the following input pins.

(C):  Comparator
(E):  Error amplifier

Channel 1

2

OUT1

O

Channel 1 push-pull type output

3

VE1

I

Channel 1 output current setting

4

Ca1

—

Channel 1 output transistor OFF current setting:  Output transistor OFF 
The current is set by connecting a capacitor between pins Ca1 and Cb1.

5

Cb1

—

6

FB1

O

Channel 1 error amplifier output

7

-IN1(E)

I

Channel 1 error amplifier inversion input

8

+IN1(E)

Channel 1 error amplifier non-inversion input

9

-IN1(C)

I

Channel 1 comparator inversion input

Channel 2

16

-IN2(C)

I

Channel 2 comparator inversion input

17

+IN2(E)

I

Channel 2 error amplifier non-inversion input

18

-IN2(E)

I

Channel 2 error amplifier inversion input

19

FB2

O

Channel 2 error amplifier output

20

Ca2

—

Channel 2 output transistor OFF current setting:  Output transistor OFF 
The current is set by connecting a capacitor between pins Ca2 and Cb2.

21

Cb2

—

22

VE2

I

Channel 2 output current setting

23

OUT2

O

Channel 2 push-pull type output

Control 

circuit

13

CTL1

I

Power and channel 1 control pin
H level:  Power and channel 1 operating
L level:  Standby

14

CTL2

I

Channel 2 control pin
When CTL1 pin = H level,
H level:  Channel 2 operating
L level:  Channel 2 OFF

15

SCP

—

Short-circuit protection circuit capacitor connection

Power 

circuit

1

V

CC

2

—

Output circuit power pin

10

-IN(PWM)

I

Master oscillating waveform input

11

V

CC1

—

Reference power and control circuit power

12

V

REF

O

Reference voltage output

24

GND

—

Ground