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參數(shù)資料
| 型號(hào)： | KA3505 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | PC SMPS Supervisory IC |
| 中文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP16 |
| 封裝： | DIP-16 |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大?。?/td> | 324K |
| 代理商： | KA3505 |
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2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.1
Features
PC Power Supply Output Monitor Circuitry
Few External Components
Over Voltage Protection for 3.3V/5V/12V Output
Under Voltage Protection for 3.3V/5V/12V Output With
Delay Time
Over Current Protection for 3.3V/5V/12V Output With
Delay Time
Fault Protection Output With Open Collector Output
Power Supply on/off Delay Time Control (PSON)
Power Good Signal Generator With Hysteresis
Open Collector PG Output
300ms Power Good Delay
Current Sense Setting Function With RI
Latch Function Controlled by PSON and Protection Input
16-Pin Dual In-line Package
FPO (Fault Protection Output)
Fault Protection Output indicates the fault condition as
protection signal. When fault state occurs, the main power is
to be turned-off and the PGO signal goes LOW.
NORMAL = "LOW", FAULT = "HIGH"
PGO (Power Good Output)
Power Good Signal Generator is to monitor the voltage level
of power supply for safe operation of a microprocessor
having some delay time at turn-on. The delay time is
programmed by a timing capacitor connected to TPG pin of
KA3505. The power good output should be low state before
the output voltage is out of regulation at turn-off.
NORMAL = "HIGH", FAULT = "LOW"
Description
The KA3505 is complete output supervisory circuitry
intended for use in the secondary side of the switched mode
power supply. It provides all the functions necessary to
monitor and control the output of the power supply system.
Power good signal generator, Remote on and off control,
some precision protection features against over-voltage,
under-voltage and over-current are implemented. It directly
senses all the output rails for OVP and UVP without any
external dividers. As for output control, Power Good Output
(PGO) and Fault Protection Output (FPO) are also included.
Utilizing a minimum number of external components, the
KA3505 offers a simple and cost effective solution, greatly
reducing PCB board space for power supply system.
OCP (Over Current Protection)
It has precision OCP functions for +3.3V, +5V, +12V
outputs. The block is made up of three comparators with
current source setting function. Two inputs of each OCP
comparator are connected to both sides of output inductor that
is located in the secondary output of SMPS.
OVP (Over Voltage Protection)
It has OVP functions for +3.3V, +5V, +12V outputs. The
circuit is made up of a comparator with three detecting inputs.
UVP (Under Voltage Protection)
It also has UVP functions for +3.3V, +5V, +12V outputs. The
block is made up of a comparator with three detecting inputs.
Remote ON/OFF
Remote on/off section is used to control SMPS externally.
If a high signal is supplied to the remote on/off input, FPO
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 with
0.1
μ
F external capacitor.
K A3505
PC S MPS S upervisory IC
16-DIP
1
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| KA350 | 3-Terminal 3A Positive Adjustable Voltage Regulator |
| KA3511 | PC POWER SUPPLY DESIGN WITH KA3511 |
| KA3524 | SMPS Controller |
| KA3525A | SMPS CONTROLLER |
| KA3525AD | SMPS CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KA350TU | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 3a Pos Voltage Reg 3Term adjustable RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| KA3511 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:PC POWER SUPPLY DESIGN WITH KA3511 |
| KA3511BS | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Intelligent Voltage Mode PWM IC |
| 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 |
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