AP1511 데이터 시트보기 (PDF) - Anachip Corporation
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AP1511 Datasheet PDF : 5 Pages
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PWM Control 5A Step-Down Converter
AP1511
Electrical Characteristics (VIN = 12V, Ta=25°C, unless otherwise specified)
Symbol
Parameter
Conditions
VIN Input Voltage
--
VFB Feedback Voltage
--
IFB Feedback Bias Current
IOUT=0.1A
ISW Switch Current
--
ISSS
Current Consumption During
Power Off
VEN=0V
∆VOUT
/VOUT
∆VOUT
/VOUT
fOSC
fOSC1
Line Regulation
Load Regulation
Oscillation Frequency
Frequency of Current Limit
or Short Circuit Protect
VIN = 3.6V~23V
IOUT = 0 to 5A
Measure waveform at SW pin
Measure waveform at SW pin
VSH
VSL
ISH
ISL
IOCSET
TSS
RDSON
EFFI
θJA
Power-Off Pin Input Voltage
Evaluate oscillation at SW pin
Evaluate oscillation stop at SW pin
Power-Off Pin Input Leakage --
Current
--
OCSET Pin Bias Current --
Soft-Start Time
--
Internal MOSFET Rdson
VIN=5V, VFB=0V
VIN=12V, VFB=0V
Efficiency
VIN = 12V, VOUT = 5V
IOUT = 5A
Thermal Resistance
Junction-to-Ambient
Min.
3.6
0.784
-
5.5
-
-
-
240
10
2.0
-
-
-
75
0.3
-
-
-
-
Typ.
-
0.8
0.1
-
10
1
0.5
300
-
-
-
20
-10
90
2
70
50
90
50
Max. Unit
23 V
0.816 V
0.5 µA
-
A
- µA
2%
1%
360 KHz
- KHz
-
0.8
V
- µA
- µA
105 µA
5 ms
100
70
mΩ
-
%
- oC/W
Typical Application Circuit
VIN
CIN
680uF
ROCSET
3K
2.2
COCSET
C
0.1uF
CVcc
0.1uF
REN
20K
CEN
0.1uF
PVcc
OUTPUT
Vcc
FB
AP1511
OCSET
VC
EN
VSS
L1 15uH
CC
Optional
D1
RA
6.8K
VOUT
COUT
470uF
C
RB 0.1uF
1.3K
VOUT
L1 Value
Note: VOUT = VREF x (1+RA/RB)
RB=1K~10K ohm
VIN=12V, IMAX=5A
2.5V
3.3V
10uH
12uH
5V
15uH
Anachip Corp.
www.anachip.com.tw
Rev. 1.5 Apr 10, 2006
3/5
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