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參數(shù)資料
| 型號： | UC3845D1X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 248K |
| 代理商： | UC3845D1X |
Product Folder - Fairchild P/N UC3842D1 - SMPS Controller
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UC3842D1
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Contents
General description
The UC3842/UC3843/UC3844/UC3845
are fixed frequency current-mode PWM
controller. They are specially designed
for Off - Line and DC-to-DC converter
applications with minimum external
components. These integrated circuits
feature a trimmed oscillator for precise
duty cycle control, a temperature
compensated reference, high gain error
amplifier, current sensing comparator,
and a high current totempole output
ideally suited for driving a power
MOSFET. Protection circuity Includes
built in under-voltage lockout and
current limiting. The UC3842 and
UC3844 have UVLO thresholds of 16V
(on) and 10V (off) The UC3843 and
UC3845 are 8.5V (on) and 7.9V (off)
The UC3842 and UC3843 can operate
within 100% duty cycle. The UC3844
and UC3845 can operate with 50% duty
cycle.
Features
q
Low Start Up Current
q
Maximum Duty Clamp
q
UVLO With Hysteresis
q
Operating Frequency Up To 500KHz
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Datasheet
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UC3843DX | |
| UC3844DX | |
| UC3845DX | |
| UC3842DX | |
| UC3844ADW | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC3845D8 | 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3845D8 | 制造商:UNITRODE 功能描述:PWM CONTROLLER SMD 3845 SOIC8 |
| UC3845D8G4 | 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3845D8TR | 功能描述:電流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3845D8TRG4 | 功能描述:電流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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