lt1765es8-trpbf Linear Technology Corporation, lt1765es8-trpbf Datasheet - Page 17

• Manufacturer Part Number: lt1765es8-trpbf
• Description: Monolithic 3a, 1.25mhz Step-down Switching Regulators
• Manufacturer: Linear Technology Corporation

APPLICATIO S I FOR ATIO
U
–9V AT 1A
U
OUTPUT
INPUT
22µF
5V
Figure 12. Positive-to-Negative Low Output Ripple Converter
W
L1: CDRH5D28-2R5
BOLD LINES INDICATE HIGH CURRENT PATHS
L1: CDRH6D28-3R0
C3
22µF
16V X5R
CERAMIC
C3
2.2µF
16V X5R
CERAMIC
V
SHDN
V
SHDN
IN
IN
Figure 13. Negative Boost Converter
GND
GND
U
LT1765FE
4700pF
LT1765-5
BOOST
1800pF
SYNC
BOOST
SYNC
U1
U1
C
6.8k
C
2.4k
C
R
C
R
C
C
V
V
C
C
V
100pF
V
0.22µF
SW
100pF
FB
0.22µF
SW
FB
C
C
C2
F
C2
F
LT1765/LT1765-1.8/LT1765-2.5/
D1
UPS120
D1
B220A
CMDSH-3
D2
3µH
L1
10k
R2
CMDSH-3
2.5µH
D2
L1
D3
B220A
64.9k
R1
LT1765-3.3/LT1765-5
C1
10µF
6.3V X5R
CERAMIC
OUTPUT
–5V AT 1A
1765 F12
C1
2.2µF
6.3V X5R
INPUT
–5V
1765 F13
17
1765fb