Description
●The HA16114P/FP/FPJ and HA16120FP/FPJ are single-channel PWM switching regulator controller ICs suitable for chopper-type DC/DC converters. Integrated totem-pole output circuits enable these ICs to drive the gate of a power MOSFET directly. The output logic of the HA16120 is designed to control a DC/DC step-up (boost) converter using an N-channel power MOS FET. The output logic of the HA16114 is designed to control a DC/DC step-down (buck) converter or inverting converter using a P-channel power MOS FET.
●Features
●• Wide supply voltage range: 3.9 V to 40 V
●• Maximum operating frequency: 600 kHz
●• Able to drive a power MOS FET (±1 A maximum peak current) by the built-in totem-pole gate predriver circuit
●• Can operate in synchronization with an external pulse signal, or with another controller IC
●• Pulse-by-pulse overcurrent limiting (OCL)
●• Intermittent operation under continuous overcurrent
●• Low quiescent current drain when shut off by grounding the ON/OFF pin
● HA16114: IOFF = 10 µA (max)
● HA16120: IOFF = 150 µA (max)
●• Externally trimmable reference voltage (Vref): ±0.2 V
●• Externally adjustable undervoltage lockout points (with respect to VIN)
●• Stable oscillator frequency
●• Soft start and quick shut function
●Note: The reference voltage 2.5 V is under the condition of VIN ≥4.5 V.
●Functions
●• 2.5 V voltage reference
●• Sawtooth oscillator (Triangle wave)
●• Overcurrent detection
●• External synchronous input
●• Totem-pole output
●• Undervoltage lockout (UVL)
●• Error amplifier
●• Vref overvoltage protection (OVP)
