Datasheet

LTC1773
18
1773fb
1773 TA08
1
2
3
4
5
10
9
8
7
6
R
SENSE
0.01Ω
47pF
220pF
0.1µF
0.1µF
30k
100k
1%
80.6k
1%
100pF
V
OUT
1.8V
7A
2.7V ≤ V
IN
≤ 6V
LTC1773
RUN/SS
SYNC/FCB
GND
SENSE
–
V
IN
TG
I
TH
V
FB
BG
SW
L1
1µH
C
IN
150µF
6.3V
Si7540DP
4.7µF
6.3V
C
OUT
680µF
4V
×2
C
IN
: PANASONIC SPECIAL POLYMER
C
OUT
: KEMET T510687K004AS
L1: TOKO TYPE D104C 919AS-1RON
R
SENSE
: IRC LR2512-01-R010-J
100pF
D2*
MBRS340T3
*NOTE: D2 NOT NECESSARY.
IF REMOVED, EFFICIENCY DROPS BY 1%
+
+
1773 TA05
1
2
3
4
5
10
9
8
7
6
R
SENSE
0.068Ω
47pF
220pF
0.1µF
0.1µF
30k
118k
1%
80.6k
1%
100pF
V
OUT
2V
800mA
2.7V ≤ V
IN
≤ 6V
LTC1773
RUN/SS
SYNC/FCB
GND
SENSE
–
V
IN
TG
I
TH
V
FB
BG
SW
L1
4.2µH
C
IN
47µF
6.3V
Si9801DY
4.7µF
6.3V
C
OUT
47µF
6.3V
C
IN
, C
OUT
: SANYO POSCAP 6TPA47M
L1: SUMIDA CDRH5D28 4R2
R
SENSE
: IRC LR1206-01-R068-F
100pF
D2*
MBR0530LT1
D1
MMSD914T1
*NOTE: D2 NOT NECESSARY.
IF REMOVED, EFFICIENCY DROPS BY 1%
+
+
TYPICAL APPLICATIONS
U
Figure 14. 3.3V to 1.8V/7A Regulator
Figure 13. Single Lithium-Ion to 2V/800mA Regulator with
Current Foldback