參數(shù)資料
型號(hào)： HA17385HPS
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(kāi)關(guān)電源電流模式PWM控制IC
文件頁(yè)數(shù)： 1/31頁(yè)
文件大?。?/td> 145K
代理商： HA17385HPS
HA17384SPS/SRP, HA17384HPS/HRP,
HA17385HPS/HRP
High Speed Current Mode PWM Control IC
for Switching Power Supply
ADE-204-028A (Z)
2nd Edition
Nov. 1999
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. Synchronous operation driven after an external signal can also be easily obtained
which offers various applications such as a power supply for monitors small multi-output power supply.
The IC series are composed of circuits required for a switching regulator IC. That is a under-voltage
lockout (UVL), a high precision reference voltage regulator (5.0 V ± 2%), a triangular wave oscillator for
timing generation, a high-gain error amplifier, and as totem pole output driver circuit which directly drives
the gate of power MOSFETs found in main switching devices. In addition, a pulse-by-pulse type, high-
speed, current-detection comparator circuit with variable detection level is incorporated which is required
for current mode control.
The HA17384SPS includes the above basic function circuits. In addition to these basic functions, the H
Series incorporates thermal shut-down protection (TSD) and overvoltage protection (OVP) functions, for
configuration of switching power supplies that meet the demand for high safety levels.
Between the HA17384 and HA17385, only the UVL threshold voltages differ as shown in the product
lineup table.(See next page.)
This IC is pin compatible with the “3842 family” ICs made by other companies in the electronics industry.
However, due to the characteristics of linear ICs, it is not possible to achieve ICs that offer full
compatibility in every detail.
Therefore, when using one of these ICs to replace another manufacturer’s IC, it must be recognized that it
has different electrical characteristics, and it is necessary to confirm that there is no problem with the power
supply (mounting) set used.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HA17385HPS/HRP 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:High Speed Current Mode PWM Control IC for Switching Power Supply
HA17385HRP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:High Speed Current Mode PWM Control IC for Switching Power Supply
HA17385HRP(E) 制造商:Renesas Electronics Corporation 功能描述:
HA17385PS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
HA17393 制造商:Panasonic Industrial Company 功能描述:I.C.
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