AP1520SA 데이터 시트보기 (PDF) - Anachip Corporation
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AP1520SA Datasheet PDF : 7 Pages
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This Anachip version datasheet is replaced
with Diodes Inc. datasheet AP1520
PWM Control 2A Step-Down Converter
AP1520
Electrical Characteristics (VIN = 12V, Ta=25°C, unless otherwise specified)
Symbol
Parameter
Conditions
VIN
VFB
IFB
ISW
ISSS
∆VOUT
/VOUT
∆VOUT
/VOUT
fOSC
fOSC1
VSH
VSL
ISH
ISL
IOCSET
TSS
RDSON
EFFI
θJA
Input Voltage
Feedback Voltage
Feedback Bias Current
Switch Current
Current Consumption
During Power off
Line Regulation
--
IOUT=0.1A
IOUT=0.1A
--
VEN=0V
VIN = 5V~23V
Load Regulation
IOUT=0.1 to 2A
Oscillation Frequency
Measure waveform at SW pin
Frequency of Current Limit
or Short Circuit Protect
Measure waveform at SW pin
EN Pin Input Voltage
Evaluate oscillation at SW pin
Evaluate oscillation stop at SW pin
EN Pin Input Leakage
--
Current
--
OCSET Pin Bias Current --
Soft-Start Time
--
Internal MOSFET Rdson
Efficiency
VIN=5V, VFB=0V
VIN=12V, VFB=0V
VIN = 12V, VOUT = 5V
IOUT = 2A
Thermal Resistance
Junction-to-Ambient
Min. Typ. Max. Unit
3.6
-
23 V
0.784 0.8 0.816 V
-
0.1 0.5 µA
2.5
-
-
A
-
10
- µA
-
1
2%
-
0.2 0.5 %
240 300 360 KHz
10
-
- KHz
2.0
-
-
-
-
0.8
V
-
20
- µA
-
-10
- µA
75
90 105 µA
0.3
1
2 ms
-
-
110
70
150
100
mΩ
-
92
-
%
-
65
- oC/W
Typical Application Circuit
VIN
Vcc
Output
ROCSET COCSET
3K
Option
AP1520
CIN
OCSET
FB
680uF
CVcc
REN
100K
EN
VSS
0.1uF
CEN
0.1uF
L1
22uH
CC
Optional
D1
VOUT
RA
6.8K
+
+
C
- 0.1uF-
RB
1.3K
COUT
470uF
VOUT
L1 Value
Note: VOUT = VFB x (1+RA/RB)
RB=0.7K~5K ohm
VIN=12V, IMAX=2A
2.5V
3.3V
22uH
27uH
5V
33uH
Anachip Corp.
www.anachip.com.tw
Rev. 1.5 Apr 10, 2006
3/7
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