HA17384 Hitachi Semiconductor, HA17384 Datasheet - Page 2

• Manufacturer Part Number: HA17384
• Description: High Speed Current Mode PWM Control IC for Switching Power Supply
• Manufacturer: Hitachi Semiconductor

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
Functions
Note: 1. H series only.
Features
Note: 1. H series only.
2
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) *
TSD function (thermal shut-down protection) *
Protect function by zener diode (between power input and GND)
High-safety UVL circuit is used (Both V
High speed operation:
Low standby current: 170 A 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 *
(Output stops when FB terminal voltage is 7.0 V Typ or higher)
TSD function (thermal shut-down protection) is included *
(Output stops when the temperature is 160°C Typ or higher)
Zener protection is included
(Clamp voltage between V
Wide operating temperature range:
Current detection response time: 100 ns Typ
Maximum oscillation frequency: 500 kHz
Operating temperature: –20°C to +105°C
Junction temperature: 150°C *
2. S series only.
IN
and GND is 34 V Typ)
2
IN
1
and Vref are monitored)
1
1
1