LTC1773 LINER [Linear Technology], LTC1773 Datasheet - Page 18

• Manufacturer Part Number: LTC1773
• Description: Synchronous Step-Down DC/DC Controller
• Manufacturer: LINER [Linear Technology]

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