HA17384HRP - Hitachi Semiconductor

HA17384HRP High Speed Current Mode PWM Controller

The HA17384S/H and HA17385H are PWM control switching regulator IC series suitable for highspeed, current-mode switching power supplies. With ICs from this series and a few external parts, a small, low cost flyback-transformer switching power supply can be constructed, which facilitates good line regulation by current mode control. Synchronous operation driv.

Features

• High-safety UVL circuit is used (Both VIN and Vref are monitored)
• High speed operation:  Current detection response time: 100 ns Typ  Maximum oscillation frequency: 500 kHz
• Low standby current: 170 µA Typ
• Wide range dead band time (Discharge current of timing capacitance is constant 8.4 mA Typ)
• Able to drive power MOSFET directly (Absolute maximum rating of output current is ±1 A peak)
• OVP function (over voltage protection) is included
*1 (Output stops when FB terminal voltage is 7.0 V Typ or higher)
• TSD function (thermal shut-down protection) is included
*1 (Output stops when .