HA17384
Description
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.
Key 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 the temperature is 160°C Typ or higher)
- Zener protection is included (Clamp voltage between VIN and GND is 34 V Typ)
- Wide operating temperature range: Operating temperature: –20°C to +105°C Junction temperature: 150°C *2 Note
- H series only
