參數(shù)資料
型號(hào): KA3511
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: PC POWER SUPPLY DESIGN WITH KA3511
中文描述: 0.2 A SWITCHING CONTROLLER, 10 kHz SWITCHING FREQ-MAX, PDIP22
封裝: 0.400 INCH, DIP-22
文件頁數(shù): 2/28頁
文件大?。?/td> 233K
代理商: KA3511
2
Rev C, November 1999
ORDERING INFORMATION
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
22-Pin dual in-line package
2. BLOCK DIAGRAM
Device
KA3511
Package
22 DIP
Operating Temperature
-25
°
C ~ 85
°
C
7
8
OSCILLATOR
2
3
4
19
12
VREF
Start Up
1
9
CODELAY
17
18
10
20
22
21
5
6
T
REM
11
16
13
14
15
PT
V12
V5
V3.3
PG
(REM
E
C2
C1
REMOTE ON/OFF
1.4V
1.25V
VREF
5V
OVP
1.25V
UVP
GND
T
2.2uF
T
PG
2.2uF
COMP3
1.8V
0.6V
1.8V
0.6V
GENPG
VREF
Ichag
COMP2
COMP1
1.25V
0.1V
DEAD TIME
CPWM
Q
R
S
CK
D
Q
Q
1.25V
INBIAS
5V
DET
V
CC
VREF
CONTROL
E/A(+)
E/A(-)
V5
V12
COMP
C
T
R
T
22-DIP-400
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