Description
●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. This logic assumes use of an N-channel power MOS FET for booster control, and a P-channel power MOS FET for step-down or inverting control.
●Features
●• Wide operating supply voltage range
● (3.9 V to 40.0 V)
●• Wide operating frequency range (600 kHz maximum operation)
●• Direct power MOS FET driving (output current ±1 A peak in maximum rating)
●• Pulse-by-pulse overcurrent protection circuit with intermittent operation function (When overcurrent state continues beyond time set in timer, the IC operates intermittently to prevent excessive output current.)
●• Grounding the ON/OFFpin turns the IC off, saving power dissipation. (HA16116: IOFF = 10 µA max.; HA16121: IOFF = 150 µA max.)
●• 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.
●Functions
●• 2.5 V reference voltage (Vref) regulator
●• Triangle wave form oscillator
●• Dual overcurrent detector
●• Dual totem pole output driver
●• UVL (under voltage lock out) system
●• Dual error amplifier
●• Vref overvoltage detector
●• Dual PWM comparator
