參數(shù)資料
型號(hào): AP1551
英文描述: 150KHz, Dual Channel 2A PWM Buck DC/DC Converter
中文描述: 150kHz的,雙通道甲的PWM降壓DC / DC轉(zhuǎn)換器
文件頁數(shù): 4/8頁
文件大?。?/td> 170K
代理商: AP1551
AP1551
150KHz, Dual Channel 2A PWM Buck DC/DC Converter
Electrical Characteristics (Continued)
Symbol
Parameter
Anachip Corp.
www.anachip.com.tw
Rev. 1.0 Nov 17, 2004
4/8
Conditions
Typ.
Limit
Unit
V
FB1
Output
Feedback
4.5V < V
IN
< 22V
0.2A < I
LOAD
< 2A
V
OUT
programmed for
3V
1.23
1.193/
1.18
1.267/
1.28
V
V
MIN
V
MAX
AP1551-channel 1
η
Efficiency
V
IN
= 12V, I
LOAD
=2A
76
%
V
FB2
Output
Feedback
4.5V < V
IN
< 22V
0.2A < I
LOAD
< 2A
V
OUT
programmed for
3V
1.23
1.193/
1.18
1.267/
1.28
V
VMIN
VMAX
AP1551-channel 2
η
Efficiency
V
IN
= 12V, I
LOAD
=2A
76
%
Specifications with
boldface type
are for full operating temperature range, the other type are for T
J
=25oC.
Typical Application Circuit
4 13
V
SD1
8 9
GND1
7 10
GND1
6 11
V
5 12
3 14
SD2
2 15
GND2
1 16
GND2
GND1
GND1
V
FB1
V
FB2
GND2
GND2
OFF ON
OFF ON
12V DC input
Cin
820uF
2.5V Vout1
3.3V Vout2
Cout1
470uF
Cout2
470uF
33uH
1.1k
1k
33uH
1.8k
1k
R1
R2
R3
R4
Vout1 =V
FB
×
(1
+
R2
R1);
Vout2 =V
FB
×
(1
+
R4
V
FB
= 1.235V
R2 = R4 = 1K ~ 3K
R3
);
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