HA16116FP/FPJ, HA16121FP/FPJ

Rev.2.0, Sep.18.2003, page 2 of 33

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/OFF pin turns the IC off, saving power dissipation. (HA16116: I

HA16121: I

• 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 V

Ordering Information

Hitachi Control ICs for Chopper-Type DC/DC Converters

Control Functions

Channels

Product

Number

Channel

No.

Step-Up

Step-Down

Inverting

Output Circuits

Overcurrent

Protection

Ch 1

❍❍

❍

Dual

HA17451

Ch 2

❍❍

❍

Open collector

SCP with timer (latch)

HA16114

—

—

❍❍

Single

HA16120

—

❍

——

Ch 1

—

❍❍

HA16116

Ch 2

—

❍

—

Ch 1

—

❍❍

Dual

HA16121

Ch 2

❍

——

Totem pole

power MOS FET

driver

Pulse-by-pulse

current limiter and

intermittent operation

by on/off timer