HA16116FP Datasheet, PDF (2/34 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

HA16116FP/FPJ, HA16121FP/FPJ
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_OFF = 10 µA max.;
HA16121: I_OFF = 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 V_IN ≥ 4.5 V.
Ordering Information
Hitachi Control ICs for Chopper-Type DC/DC Converters
Channels
Dual
Single
Dual
Product
Number
HA17451
HA16114
HA16120
HA16116
HA16121
Channel Control Functions
No.
Step-Up Step-Down
Ch 1
r
r
Ch 2
r
r
—
—
r
—
r
—
Ch 1
—
r
Ch 2
—
r
Ch 1
—
r
Ch 2
r
—
Inverting
r
r
r
—
r
—
r
—
Output Circuits
Open collector
Totem pole
power MOS FET
driver
Overcurrent
Protection
SCP with timer (latch)
Pulse-by-pulse
current limiter and
intermittent operation
by on/off timer
2