AP1513 데이터 시트보기 (PDF) - Anachip Corporation
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AP1513 Datasheet PDF : 7 Pages
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PWM Control 2A Step-Down Converter
AP1513
Electrical Characteristics (VIN = 12V, Ta=25°C, unless otherwise specified)
Symbol
Parameter
Conditions
VIN Input Voltage
VFB Feedback Voltage
IFB Feedback Bias Current
ISW Switch Current
ISSS
Current Consumption
During Power Off
--
IOUT=0.1A
IOUT=0.1A
--
VEN =0V
∆VOUT
/VOUT
∆VOUT
/VOUT
fOSC
fOSC1
Line Regulation
VIN=5V~18V
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
VSH
VSL
ISH
ISL
IOCSET
TSS
EN Pin Input Voltage
EN Pin Input Leakage
Current
OCSET Pin Bias Current
Soft-Start Time
RDSON Internal MOSFET Rdson
EFFI Efficiency
θJA
Thermal Resistance
Junction-to-Ambient
Evaluate oscillation at SW pin
Evaluate oscillation stop at SW pin
--
--
--
--
VIN=5V, VFB=0V
VIN=12V, VFB=0V
VIN=12V, VOUT = 5V
IOUT=2A
Min.
3.6
0.784
-
2.5
-
Typ.
-
0.8
0.1
-
10
Max. Unit
18 V
0.816 V
0.5 µA
-
A
- µA
-
1
2%
-
0.2 0.5 %
240 300 400 KHz
10
-
- KHz
2.0
-
-
-
-
0.8
V
-
20
- µA
-
-10
- µA
75
90 105 µA
0.3
2
5 ms
-
-
110
70
150
100
mΩ
-
92
-
%
-
65
- oC/W
Typical Application Circuit
VIN
Vcc
Output
ROCSET COCSET
3K
Option
AP1513
CIN
OCSET
FB
470uF
CVcc
REN
100K
EN
VSS
0.1uF
CEN
0.1uF
L1
33uH
CC
Optional
D1
VOUT=5V/2A
RA
6.8K
+
+
C
COUT
- 0.1uF- 470uF
RB
1.3K
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. 1.3 Nov 17, 2005
3/7
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