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HA17385HPS Datasheet(PDF) 2 Page - Renesas Technology Corp |
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HA17385HPS Datasheet(HTML) 2 Page - Renesas Technology Corp |
2 / 29 page HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP Rev.3.00 Jun 15, 2005 page 2 of 28 Functions • Under-voltage lockout system • Reference voltage regulator of 5.0 V ± 2% • Triangular wave (sawtooth) oscillator • Error amplifier • Totem pole output driver circuit (direct driving for power MOS FETs) • Current-detection comparator circuit for current mode • OVP function (over voltage protection) * 1 • TSD function (thermal shut-down protection) * 1 • Protect function by zener diode (between power input and GND) Note: 1. H series only. 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 Notes: 1. H series only. 2. S series only. |
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