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HA17384SPS Datasheet(PDF) 2 Page - Hitachi Semiconductor

Part No. HA17384SPS
Description  High Speed Current Mode PWM Control IC for Switching Power Supply
Download  31 Pages
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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HA17384SPS Datasheet(HTML) 2 Page - Hitachi Semiconductor

 
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HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
2
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 MOSFETs)
• 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 V
IN 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 V
IN and GND is 34 V Typ)
• Wide operating temperature range:
 Operating temperature: –20°C to +105°C
 Junction temperature: 150°C *2
Note: 1. H series only.
2. S series only.


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