HA16654中文资料PWM Controlled Switching Regulator数据手册HITACHI规格书

描述 Description

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 tr= 80 ns (typ) and falling time tf= 40 ns (typ) at 20 V swing.Functions
•  Reference voltage circuit
•  Triangular waveform oscillation circuit
•  PWM comparator circuit
•  Low-input malfunction protection circuit
•  Output drive circuit
•  Soft start and quick shut down

特性 Features

•  High speed switching: tr= 80 ns, tf= 40 ns (typ) when use exernal driver circuit
•  High frequency operation:
   HA16654A (f = 100 kHz to 500 kHz)
   HA16664A (f = 100 kHz to 200 kHz)
   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