HA16121FP Overview
HA16116FP/FPJ and HA16121FP/FPJ are dual-channel PWM switching regulator controller ICs for use in chopper-type DC/DC converters. This IC series incorporates totem pole gate drive circuits to allow direct driving of a power MOS FET. The output logic is preset for booster, step-down, or inverting control in a DC/DC converter.
HA16121FP Key Features
- Wide operating supply voltage range- (3.9 V to 40.0 V) Wide operating frequency range (600 kHz maximum operation) Direct
- Grounding the ON/OFF pin turns the IC off, saving power dissipation. (HA16116: IOFF = 10 µA max.; HA16121: IOFF = 150 µA
- Built-in UVL circuit (UVL voltage can be varied with external resistance.)
- Built-in soft start and quick shutoff functions Note: The reference voltage 2.5 V is under the condition of VIN ≥ 4.5 V
- Ch 1 Ch 2 HA16121 Ch 1 Ch 2 Control Functions Step-Up r r
- r Step-Down r r r
- Inverting r r r
- Totem pole power MOS FET driver Pulse-by-pulse current limiter and intermittent operatio