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FA3677F, FA3685, FA3687V

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Info of FA3677F
Info of FA3685
Info of FA3687V

FA3677F, FA3685, FA3687V Selling Leads, Datasheet

MFG:-- Package Cooled:QFP D/C:QFP

FA3677F, FA3685, FA3687V Datasheet download

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Part Number: FA3677F

MFG: --

Package Cooled: QFP

D/C: QFP

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FA3687V General Description

FA3687V is a PWM type DC-to-DC converter control IC with 2ch outputs that can directly drive power MOSFETs. CMOS devices with high breakdown voltage are used in this IC and low power consumption is achieved. This IC is suitable for very small DC-to-DC converters because of their small and thin package (1.1mm max.), and high frequency operation (up to 1.5MHz). You can select Pch or Nch of MOSFETs driven, and design any topology of DC-to-DC converter circuit like a buck, a boost, inverting, a fly-back, or a forward.

FA3687V Maximum Ratings

Item	Symbol	Rating	Unit
Power supply voltage	V_CC	20	V
SEL1, SEL2 pin voltage	V_SEL	0.3 to 5.0	V
FB1, IN1, FB2, IN2, IN2+ pin voltage	V _{EA_IN}	0.3 to 5.0	V
CS1, CS2, CP, RT, VREG pin voltage	V _{CTR_IN}	0.3 to 5.0	V
OUT1/2 OUT pin source current OUT pin sink current	I _OUTI _OUT+	400 (peak) 150 (peak)	mA mA
OUT1/2 OUT pin source current OUT pin sink current	I _OUTI _OUT+	50 (continuous) 50 (continuous)	mA mA
Power dissipation *	P_d	300 (Ta25°C)	mW
Operating junction temperature	T_J	+125	°C
Operating ambient temperature	T_OPR	30 to +85	°C
Storage temperature	T_STG	40 to +125	°C

FA3687V Features

• Wide range of supply voltage: V_CC=2.5 to 20V
• MOSFET direct driving
• Selectable output stage for Pch/Nch MOSFET on each channel
• Low operating current by CMOS process: 2.5mA (typ.)
• 2ch PWM control IC
• High frequency operation: 300kHz to 1.5MHz
• Simple setting of operation frequency by timing resistor
• Soft start function at each channel
• Adjustable maximum duty cycle at each channel
• Built-in undervoltage lockout
• High accuracy reference voltage: V_REF: 1.00V±1%
V_REG: 2.20V±1%
• Adjustable built-in timer latch for short-circuit protection
• Thin and small package: TSSOP-16

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