Datasheet

14
LT1317/LT1317B
TYPICAL APPLICATIO S
U
Single Li-Ion Cell to 4V/70mA, –4V/10mA
V
IN
LT1317
4.5V TO 2.5V
L1
22µH
L2
22µH
D1
FBSHDNSHUTDOWN
33k
442k
4V
70mA
1.00M
3.3nF
100pF
C1:
C2:
C3:
D1:
D2:
L1, L2:
MURATA GRM235Y5V107Z01
AVX TAJB336M010
AVX TAJA156M010
MBR0520
BAT54S (DUAL DIODE)
MURATA LQH3C220K04
1317 TA02
1µF
CERAMIC
1µF
CERAMIC
C2
33µF
C1
1µF
Li-Ion
CELL
V
C
GND
SW
+
C3
15µF
D2
–4V
10mA
+
V
IN
SW
FB
LT1317B
L1
22µH
680Ω
150pF
D2
D1
33k
5.9k
150k
3300pF
1317 TA11
C1: AVX TAJ156M010
C2: SANYO 35CV33GX
C3, C4, C5, C6: 0.1µF CERAMIC
D1, D2, D3: MOTOROLA MMBD914LT1
L1: MURATA LQH3C220
V
C
GND
V
IN

3V TO 6V
V
OUT

33V
0mA TO 10mA
C1
15µF
10V
+
+
C3
0.1µF
C2
10µF
35V
C4
0.1µF
C5
0.1µF
C6
0.1µF
D3
47Ω
Low Noise 33V Varactor Bias Supply