Datasheet

13
LT1614
3.3V to –3.1V/200mA DC/DC Converter
V
IN
SW
LT1614
L1
22µH
V
IN
3.3V
D1
FB
SHDN
18.7k
12.7k
100k
1nF
V
OUT
–3.1V
200mA
C1: AVX1206CY106
D1: MBR0520
L1, L2: MURATA LQH3C220
1614 TA03
22µF
22µF
V
C
GND
L2
22µH
C1
1µF
+
+
3.3V to –3.1V Converter Efficiency
LOAD CURRENT (mA)
31030
20
EFFICIENCY (%)
60
70
80
100 300
1614 TA04
50
40
30
TYPICAL APPLICATIO S
U