HA16114P Datasheet, PDF (2/38 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

HA16114P/PJ/FP/FPJ, HA16120FP/FPJ
• Error amplifier
• Vref overvoltage protection (OVP)
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 pre-
driver 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: I_OFF = 10 µA (max)
HA16120: I_OFF = 150 µA (max)
• Externally trimmable reference voltage (Vref): ±0.2 V
• Externally adjustable undervoltage lockout points (with respect to V_IN)
• Stable oscillator frequency
• Soft start and quick shut function
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