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AP1513 Datasheet(PDF) 3 Page - Anachip Corp

Part # AP1513
Description  PWM Control 2A Step-Down Converter
PDF  7 Pages
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Manufacturer  ANACHIP [Anachip Corp]
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Logo ANACHIP - Anachip Corp

AP1513 Datasheet(HTML) 3 Page - Anachip Corp

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AP1513
PWM Control 2A Step-Down Converter
Anachip Corp.
www.anachip.com.tw
Rev. 1.3 Nov 17, 2005
3/7
Electrical Characteristics (VIN = 12V, T
a=25°C, unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VIN
Input Voltage
--
3.6
-
18
V
VFB
Feedback Voltage
IOUT=0.1A
0.784
0.8
0.816
V
IFB
Feedback Bias Current
IOUT=0.1A
-
0.1
0.5
µA
ISW
Switch Current
--
2.5
-
-
A
ISSS
Current Consumption
During Power Off
VEN =0V
-
10
-
µA
∆VOUT
/VOUT
Line Regulation
VIN=5V~18V
-
1
2
%
∆VOUT
/VOUT
Load Regulation
IOUT=0.1 to 2A
-
0.2
0.5
%
fOSC
Oscillation Frequency
Measure waveform at SW pin
240
300
400
KHz
fOSC1
Frequency of Current Limit
or Short Circuit Protect
Measure waveform at SW pin
10
-
-
KHz
VSH
Evaluate oscillation at SW pin
2.0
-
-
VSL
EN Pin Input Voltage
Evaluate oscillation stop at SW pin
-
-
0.8
V
ISH
--
-
20
-
µA
ISL
EN Pin Input Leakage
Current
--
-
-10
-
µA
IOCSET OCSET Pin Bias Current
--
75
90
105
µA
TSS
Soft-Start Time
--
0.3
2
5
ms
VIN=5V, VFB=0V
-
110
150
RDSON Internal MOSFET Rdson
VIN=12V, VFB=0V
-
70
100
mΩ
EFFI
Efficiency
VIN=12V, VOUT = 5V
IOUT=2A
-
92
-
%
θJA
Thermal Resistance
Junction-to-Ambient
-
65
-
oC/W
Typical Application Circuit
AP1513
+
-
V
SS
EN
C
C
R
A
R
B
D1
FB
Vcc
Output
CVcc
V
OUT=5V/2A
V
IN
R
OCSET
OCSET
C
OUT
C
IN
Optional
C
OCSET
C
EN
R
EN
Option
100K
Note: V
OUT = VFB x (1+RA/RB)
R
B=0.7K~5K ohm
L1
33uH
6.8K
1.3K
3K
0.1uF
+
-
C
0.1uF
470uF
470uF
0.1uF
VIN=12V, IMAX=2A
VOUT
2.5V
3.3V
5V
L1 Value
22uH
27uH
33uH



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