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參數(shù)資料
| 型號： | KA3511BS |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Intelligent Voltage Mode PWM IC |
| 中文描述： | 0.2 A SWITCHING CONTROLLER, 10 kHz SWITCHING FREQ-MAX, PDIP24 |
| 封裝： | SDIP-24 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 168K |
| 代理商： | KA3511BS |
2000 Fairchild Semiconductor Interaltional
www.fairchildsemi.com
Rev. 5.0
Features
Complete PWM control and house keeping circuitry
Few external components
Precision voltage reference trimmed to 2%
Dual output for push-pull operation
Each output TR for 200mA sink current
Variable duty cycle by dead time control
Soft start capability by using dead time control
Double pulse suppression logic
Over voltage protection for 3.3V / 5V / 12V
Under voltage protection for 3.3V / 5V / 12V
One more external input for various protection (PT)
Remote on/off control function (PS-ON)
Latch function controlled by remote and protection input
Power good signal generator with hysteresis
Precision reference section
The reference voltage trimmed to
±
2%
(4.9V
≤
Vref
≤
5.1V)
PG (Power good signal generator) section
Power good signal generator is to monitor the volt-
age level of power supply for safe operation of a
microprocessor.
KA3511BS requires few external components to
accomplish a complete housekeeping circuits for
SMPS.
Description
The KA3511BS is a fixed-frequency improved-
performance pulse-width modulation control cir-
cuit with complete housekeeping circuitry for use
in the secondary side of SMPS (Switched mode
power supply). It contains various functions, which
are precision voltage reference, over voltage pro-
tection, under voltage protection, remote on/off
control, power good signal generator and etc.
OVP (Over voltage protection) section
It has OVP functions for +3.3V,+5V,+12V and PT
outputs. The circuit is made up of a comparator
with four detecting inputs and without hysteresis
voltage. Especially, PT (Pin18) is prepared for an
extra OVP input or another protection signal.
UVP (Under voltage protection) section
It also has UVP functions for +3.3V, +5V, +12V out-
puts. The block is made up of a comparator with three
detecting inputs and without hysteresis voltage.
Remote on/off section
Remote on/off section is used to control SMPS ex-
ternally. If a high signal is supplied to the remote
on/off input, PWM signal becomes a high state and
all secondary outputs are grounded. The remote on/
off signal is transferred with some on-delay and
off-delay time of 8ms, 24ms respectively.
24-SDIP
1
KA3511BS
Intelligent Voltage Mode PWM IC
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| KA378R33 | Low Dropout Voltage Regulator |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KA3511DS | 功能描述:電壓模式 PWM 控制器 PWM/ Secondary Combo IC RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| KA3524 | 功能描述:DC/DC 開關(guān)控制器 SMPS Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| KA3525A | 功能描述:DC/DC 開關(guān)控制器 SMPS Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| KA3525A | 制造商:Fairchild Semiconductor Corporation 功能描述:CONTROLLER IC 制造商:Fairchild Semiconductor Corporation 功能描述:IC, SMPS CONTROLLER, 16-DIP |
| KA3525AD | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:SMPS CONTROLLER |
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