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AP1511 Datasheet(PDF) 3 Page - Anachip Corp

Part No. AP1511
Description  PWM Control 5A Step-Down Converter
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Maker  ANACHIP [Anachip Corp]
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AP1511 Datasheet(HTML) 3 Page - Anachip Corp

   
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AP1511
PWM Control 5A Step-Down Converter
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Mar 4, 2005
3/5
Electrical Characteristics (VIN = 12V, T
a=25°C, unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VIN
Input Voltage
--
3.6
-
23
V
VFB
Feedback Voltage
--
0.784
0.8
0.816
V
IFB
Feedback Bias Current
IOUT=0.1A
-
0.1
0.5
µA
ISW
Switch Current
--
5.5
-
-
A
ISSS
Current Consumption During
Power Off
VON/OFF =0V
-
10
-
µA
∆VOUT
/VOUT
Line Regulation
VIN = 3.6V~23V
-
1
2
%
∆VOUT
/VOUT
Load Regulation
IOUT = 0 to 5A
-
0.5
1
%
fOSC
Oscillation Frequency
Measure waveform at SW pin
240
300
360
KHz
fOSC1
Frequency of Current Limit
or Short Circuit Protect
Measure waveform at SW pin
10
30
60
KHz
VSH
Evaluate oscillation at SW pin
2.0
-
-
VSL
Power-Off Pin Input Voltage
Evaluate oscillation stop at SW pin
-
-
0.8
V
ISH
--
-
20
-
µA
ISL
Power-Off 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
-
70
100
RDSON Internal MOSFET Rdson
VIN=12V, VFB=0V
-
50
70
mΩ
EFFI
Efficiency
VIN = 12V, VOUT = 5V
IOUT = 5A
-
90
-
%
Typical Application Circuit
AP1511
+
-
EN
C
C
D1
FB
OUTPUT
R
OCSET
OCSET
PVcc
Vcc
V
C
Vref
Cref
CVcc
C
EN
20K
0.1µ
(Comp)
R
EN
C
IN
C
OUT
Optional
V
SS
C
OCSET
V
IN
R
B
R
A
V
OUT
0.1µ
Note: VOUT = VREF x (1+RA/RB)
RB=1K~10K ohm


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