LTC3459 LINER [Linear Technology], LTC3459 Datasheet - Page 9

• Manufacturer Part Number: LTC3459
• Description: 10V Micropower Synchronous Boost Converter in ThinSOT
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO S
Very low operating quiescent current and synchronous
operation allow for greater than 85% conversion effi-
ciency in many applications. Lower output voltages will
result in lower efficiencies since the N- and P-channel
2.5V TO 4.2V
3.3V TO 5V
BATTERY
Li-Ion
V
V
IN
IN
1 F
+
1 F
*COILCRAFT DO3314
OFF ON
*COILCRAFT DO3314
OFF ON
33 H*
V
SHDN
IN
LTC3459
GND
SW
15 H*
V
SHDN
V
IN
OUT
LTC3459
FB
GND
SW
U
V
OUT
FB
2M
280k
1M
332k
3459 TA05a
47pF
10V from 3.3V or 5V Input
3459 TA04a
47pF
4.7 F
5V from Li-Ion Input
V
10V
OUT
4.7 F
V
5V
OUT
R
output power capability of the LTC3459 are also depen-
dant on input and output voltages.
DS(ON)
’s will increase. The switching frequency and
100
100
90
80
70
60
50
90
80
70
60
50
0.01
0.01
V
V
OUT
OUT
= 10V
= 5V
0.1
0.1
I
I
LOAD
LOAD
1
1
(mA)
(mA)
V
V
V
IN
V
IN
IN
IN
= 4.2V
= 2.5V
= 3.3V
= 5V
10
10
3459 TA05b
3459 TA04b
LTC3459
100
100
9
3459f