參數(shù)資料
型號: LT1622
廠商: Linear Technology Corporation
英文描述: Low Input Voltage Current Mode Step-Down DC/DC Controller(低輸入電壓,電流模式步降DC/DC控制器)
中文描述: 低輸入電壓電流模式降壓DC / DC控制器(低輸入電壓,電流模式步降直流/直流控制器)
文件頁數(shù): 14/16頁
文件大小: 223K
代理商: LT1622
14
LTC1622
TYPICAL APPLICATIO
N
S
LTC1622 2.5V/3A Regulator with External Frequency Synchronization
D1
L1
4.7
μ
H
R2
0.01
M1
R3
158k
V
3.3V TO
8.5V
V
2.5V
3A
R4
75k
1622 TA03
C4
560pF
650kHz
1.5V
P-P
C1
47
μ
F
16V
×
2
+
C2
100
μ
F
6.3V
×
2
+
1
2
3
4
8
7
6
5
SENSE
I
TH
V
FB
V
IN
PDRV
GND
RUN/
SS
LTC1622
SYNC/
MODE
R1
10k
C3
220pF
C1: AVX TPSD476M016R0150
C2: AVX TPSD107M010R0065
D1: MOTOROLA MBR320T3
L1: COILCRAFT D03316-472
M1: SILICONIX Si3443DV
R2: DALE WSL-2512 0.01
Zeta Converter with Foldback Current Limit
R2
0.04
Si3441DV
L1A
6.2
μ
H
L1B
6.2
μ
H
D1
47
μ
F
16V
R3
232k
V
3.3V
V
IN
2.5V TO
8.5V
R4
75k
1622 TA04
C4
0.1
μ
F
R1
47k
C3
470pF
C1: AVX TPSD476M016R0150
C2: AVX TPSD107M010R0080
D1: MOTOROLA MBRS320T3
L1A, L1B: BH ELECTRONICS BH511-1012
R2: DALE WSL-1206 0.04
C1
47
μ
F
16V
×
2
+
C2
100
μ
F
10V
+
1
2
3
4
8
7
6
5
SENSE
I
TH
V
FB
V
IN
PDRV
GND
RUN/
SS
LTC1622
SYNC/
MODE
+
TOP VIEW
4
1
3
2
L1A
L1B
V
IN
(V)
2.5
3.3
5.0
6.0
8.4
I
OUT(MAX)
0.45
0.70
0.95
1.00
1.05
D2
1N4818
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