參數(shù)資料
型號: HA17384SRP
廠商: Hitachi,Ltd.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: High Speed Current Mode PWM Control IC for Switching Power Supply
中文描述: 高速開關(guān)電源電流模式PWM控制IC
文件頁數(shù): 2/31頁
文件大?。?/td> 145K
代理商: HA17384SRP
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
μ
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 *
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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