LTC1773 LINER [Linear Technology], LTC1773 Datasheet - Page 15

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

TYPICAL APPLICATIONS
C
C
IN
OUT
33pF
30k
: SANYO POSCAP 10TPA100M
80.6k
C
C
: AVX TPSD227M006R0100
IN
OUT
1%
0.1µF
0.1µF
: SANYO POSCAP 6TPA150M
33pF
30k
80.6k
: AVX TPSD227M006R0100
1%
200pF
200pF
V
1
2
3
4
5
IN
I
RUN/SS
SYNC/FCB
V
GND
TH
FB
1
2
3
4
5
U
Figure 8. Dual Output 2.5V/2A and 5V/100mA Application
LTC1773
I
V
RUN/SS
SYNC/FCB
GND
TH
FB
Figure 9. Single Lithium-Ion to 2.5V/5A Regulator
LTC1773
SENSE
100
SW
V
TG
BG
SENSE
95
90
85
80
75
70
65
60
IN
–
1
SW
10
9
8
7
6
V
BG
TG
IN
169k
L1: COILTRONICS CTX5-4/BH ELECTRONICS 511-0033
R
169k
–
1%
1%
L1: TOKO D104C 919AS-2R8M
R
SENSE
Efficiency Curve for Figure 9
SENSE
10
9
8
7
6
: IRC LR1206-01-R033-F
: DALE WSL-2010
10
Si9801DY
0.033Ω
R
V
SENSE
Si9803DY
Si9804DY
IN
V
0.015Ω
R
= 3.3V
I
IN
OUT
SENSE
= 5V
100
(mA)
1000
MBR0530LT1
5µH
2.8µH
1:1
L1
L1
1773 • G17
10000
+
+
V
+
2.5V
5A
OUT
22µF
6.2V
C
220µF
6.3V
V
2.5V
2A
OUT
C
220µF
6.3V
×3
OUT1
2.7V ≤ V
OUT
+
IN
≤ 5.5V
2.7V ≤ V
422k
80.6k
1773 TA02
C
150µF
6.3V
IN
+
IN
≤ 8.4V
1773 TA01
C
100µF
10V
V
5V
100mA
IN
OUT2
LTC1773
15
1773fb