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參數(shù)資料
| 型號： | KA3511DS |
| 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)： | 1/18頁 |
| 文件大?。?/td> | 169K |
| 代理商： | KA3511DS |
2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.0
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 voltage level
of power supply for safe operation of a microprocessor.
KA3511DS requires few external components to accomplish
a complete housekeeping circuits for SMPS.
Description
The KA3511DS is a fixed frequency improved performance
pulse width modulation control circuit 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 protection, 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 outputs. 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 externally. 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
K A3511DS
Intelligent Voltage Mode PWM IC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| KA-3528 | 制造商:KINGBRIGHT 制造商全稱:Kingbright Corporation 功能描述:3.5 x 2.8mm SURFACE MOUNT LED LAMPS |
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