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APW1172 Datasheet(PDF) 5 Page - Anpec Electronics Coropration

Part # APW1172
Description  2.5A SWITCH STEP DOWN SWITCHING REGULATOR
PDF  21 Pages
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Manufacturer  ANPEC [Anpec Electronics Coropration]
Direct Link  http://www.anpec.com.tw
Logo ANPEC - Anpec Electronics Coropration

APW1172 Datasheet(HTML) 5 Page - Anpec Electronics Coropration

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Copyright
© ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
APW1172
www.anpec.com.tw
5
APW1172
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Reference Section
IREF = 0mA
3.234
3.3
3.366
V
VREF
VREF Output Voltage
IREF = 0mA to 5mA, VCC = 4.4A to
22V
*
3.2
3.3
3.399
V
Line Regulation
IREF = 0mA, VCC = 4.4A to 22V
5
10
mV
Load Regulation
IREF = 0mA to 5mA
8
15
mV
Short Circuit Current
10
18
30
mA
Other
Thermal Limiting Protection
160
°C
Hysteresis
30
°C
Over-Voltage Protection
Threshold Voltage
VCOMP = 0.8V
*
120
125
130
%
Electrical Characteristics (Cont.)
Typical Application Circuit
L
22uH
D1
1N5819
VIN
4.8V to 22V
CIN
22uF
VOUT = 3.3V
RF1
5.6K
RF2
3.3K
COUT
100uF
VREF = 3.3V
RC1
4.3K
CC1
2.2nF
CC2
220pF
APW1172
OUT
1
2
3
4
7
8
6
5
SYNC
INH
COMP
GND
VCC
FB
VREF
D2
1N4148
C1
1uF
R1
137K
Soft Start
Circuit
The * denotes the specifications that apply over TA = -40 ~ 85oC. Typical values are at TA = 25oC.
VCC = 12V unless otherwise specified.



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