Datasheet

13
LTC1622
TYPICAL APPLICATIONS
U
1
2
3
4
8
7
6
5
1
4
8
7
6
5
SENSE
–
I
TH
V
FB
V
IN
PDRV
GND
SYNC/
MODE
RUN/
SS
L1
3.3µH
R2
0.025Ω
U1
V
OUT
1.8V
1.5A
V
IN
2.5V TO
8.5V
1622 TA01
R1
10K
C3
220pF
C1
47µF
16V
C2
220µF
6V
C4
560pF
R3
93.1k
LTC1622
+
+
R4
75k
C1: AVX TPSD476M016R0150
C2: AVX TPSD227M006R0100
L1: MURATA LQN6C3R3
R2: DALE WSL-1206 0.025Ω
U1: INTERNATIONAL RECTIFIER
FETKY
TM
IRF7422D2
2
3
LTC1622 1.8V/1.5A Regulator with Burst Mode Operation Disabled
FETKY is a trademark of International Rectifier Corporation.
LTC1622 2.5V/2A Regulator with Burst Mode Operation Enabled
D1
L1
4.7µH
R2
0.02Ω
M1
R3
158k
V
OUT
2.5V
2A
V
IN
3.3V TO
8.5V
R4
75k
1622 TA02
C4
560pF
C1
47µF
16V
× 2
+
C2
150µF
6V
× 2
+
1
2
3
4
8
7
6
SENSE
–
I
TH
V
FB
V
IN
PDRV
GND
RUN/
SS
LTC1622
SYNC/
MODE
R1
10k
C3
220pF
5
C1: AVX TPSD476M016R0150
C2: SANYO POSCAP 6TPA47M
D1: MOTOROLA MBR320T3
L1: COILCRAFT D03316-472
M1: SILICONIX Si3443DV
R2: DALE WSL-2010 0.02Ω