Fujitsu MB3788 manual PIN Description, Pin No Pin name Descriptions

MB3788

■PIN DESCRIPTION

Pin No.		Pin name	I/O	Descriptions
	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.
Channel 1	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
	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
Channel 2	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
	13	CTL1	I	Power and channel 1 control pin
				H level: Power and channel 1 operating
				L level: Standby
Control
				Channel 2 control pin
circuit	14	CTL2	I	When CTL1 pin = H level,
				H level: Channel 2 operating
				L level: Channel 2 OFF
	15	SCP	—	Short-circuit protection circuit capacitor connection
	1	VCC2	—	Output circuit power pin
	10	-IN(PWM)	I	Master oscillating waveform input
Power
	11	VCC1	—	Reference power and control circuit power
circuit
	12	VREF	O	Reference voltage output
	24	GND	—	Ground

Note: The alphabetic characters in parenthesis above indicate the following input pins. (C): Comparator

(E): Error amplifier

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