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HA16664APS Datasheet

  • HA16664APS

  • PWM Controlled Switching Regulator

  • 15頁(yè)

  • HITACHI

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HA16654A, HA16664A Series
PWM Controlled Switching Regulator
The HA16654A and HA16664A are PWM control switching regulator ICs which drive a power MOSFET
at high speed and high frequency. The standby current is limited to as small as 1.5 mA (typ). These
devices incorporate totem pole circuits suited for high-speed push-pull operation at the output stage,
accomplishing high-speed switching with rising time t
r
= 80 ns (typ) and falling time t
f
= 40 ns (typ) at 20
V swing.
Functions
鈥?/div>
Reference voltage circuit
鈥?/div>
Triangular waveform oscillation circuit
鈥?/div>
PWM comparator circuit
鈥?/div>
Low-input malfunction protection circuit
鈥?/div>
Output drive circuit
鈥?/div>
Soft start and quick shut down
Features
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High speed switching: t
r
= 80 ns, t
f
= 40 ns (typ) when use exernal driver circuit
鈥?/div>
High frequency operation:
HA16654A (f = 100 kHz to 500 kHz)
HA16664A (f = 100 kHz to 200 kHz)
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Low power dissipation : 2 mA max in standby state
5 V reference voltage
Low-input malfunction protection (High threshold voltage: 10 V Typ, Low threshold voltage: 8 V
Typ)
Adjustable dead band width
Enlarged output pulse width control range (0 to 80%)
Soft start and quick shut down functions
Single output: totem pole

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