參數(shù)資料
型號: KA3502
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 模擬信號調(diào)理
英文描述: PC SMPS Supervisory IC
中文描述: SPECIALTY ANALOG CIRCUIT, PDIP20
封裝: DIP-20
文件頁數(shù): 1/14頁
文件大?。?/td> 89K
代理商: KA3502
2000 Fairchild Semiconductor International
www.fairchildsemi.com
Rev. 5.0
Features
Complete Housekeeping Circuit
Few External Components
Over Voltage Protection for 3.3V/5V/12V/Adj. Output
Over Current Protection for 3.3V/5V/12V Output
Open-Collector Output and Remote On/Off Function
Remote On/Off Delay Time Control
Precision Voltage Reference for Outputs, 5V/12V
Uncommitment Precision Voltage Reference for +5Vs
Power Good Signal Generator with Hysteresis
Disable Logic of 3.3V, 5V, 12V for Complete Shutdown
Descriptions
The KA3502 is complete housekeeping circuitry for use in
the secondary side of SMPS(Switched Mode Power Supply).
It contains various functions, which are two Precision Volt-
age References, Over Voltage/Current Protection, Remote
On/Off Control, Power Good Signal Generator, Disable
Logic and etc.
Internal Block Diagram
4
17
19
20
18
1
2
3
6
15
14 11
5
9
PG
12
13
10
Topr
16
GND
8
7
+
+
+
+
-
Vcc
R
R
R
R
R
R
COMP1
1.26V
Adj
Tsur
IS5
IS33
IS12
2.7V
Vcc
COMP2
Vcc
COMP3
Vcc
COMP4
+
-
+
-
+
-
+
-
+
-
+
-
135mV
65mV
50mV
Vcc
Vcc
+
-
2V
COMP5
COMP6
1.4V
+
-
R
SVcc
Q
Ion
2.8V
Ion+
Ioff
Vcc
+
-
2V
0.7V
Q1
REFERENCE1
R8
1k
R9
10k
R10
39k
R13
R11
5.4k
R12
R14
1.28V
1.24V
+
-
+
-
COMP8
Vcc
Vcc
COMP7
Q2
5.2V
Ichg
2V
1.3V
Q3
+
-
R15
5.1k
COMP9
VREF2
REFERENCE2
FB2
Trem
REM
V33 V5 V12
PWM FB1 VREF1 UV
VCC
R7
KA3502
PC SMPS Supervisory IC
20-DIP
1
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相關(guān)代理商/技術(shù)參數(shù)
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KA3504 功能描述:監(jiān)控電路 Supervisor IC SMPS RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲(典型值):10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
KA3505 功能描述:監(jiān)控電路 PC SMPS Sup. IC RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲(典型值):10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
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KA3511 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:PC POWER SUPPLY DESIGN WITH KA3511
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