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| LTC3112_15 Datasheet, PDF (26/32 Pages) Linear Technology – 15V, 2.5A Synchronous Buck-Boost DC/DC Converter | |||
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LTC3112
Typical Applications
5V Backup Supply from Supercap Runs Down to VIN = 2V with 250mA Load
VIN
15V TO 2V
+
22mF
SUPERCAP
1M
220µF
TANT
499k
VOUT
499k
4.7µH
0.1µF
SW1
BST1
VIN
VCC
LTC3112
SW2
BST2
VOUT
COMP
PWM/SYNC
FB
RUN
IOUT
GND
OVP
1µF
0.1µF
680pF 33k
22pF
845k
VOUT
5V/250mA
47µF
47pF
TO ADC
1V PER AMP
10k
100pF 42.2k
158k
3112 TA05
VIN
5V/DIV
VOUT
5V/DIV
RUN
5V/DIV
ILOAD
500mA/DIV
500ms/DIV
3112 TA05a
3112fc
26
For more information www.linear.com/LTC3112
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