Datasheet

12
LT1316
TYPICAL APPLICATIONS N
U
Positive-to-Negative Converter for LCD Bias
V
IN
V
IN
SW
R
SET
FB
7
65
D1
MMBD914
8
4
3
SHDN
LT1316
GND
C4
1µF
35V
R3
15k
C1
33µF
10V
2 CELLS
L1
33µH
C4: SPRAGUE 293D105X9035B2T
C5: SPRAGUE 293D225X0035B2T
L1: SUMIDA CD43-330

1316 TA06
SHUTDOWN
+
C5
2.2µF
35V
+
+
R1
3.3M
2.2M
C2
0.01µF
50V
R2
210k
CONTRAST
ADJUST
D3
MBR0530L
V
OUT

–20V
6mA
C3
100pF
50V
C6
0.33µF
50V
D2
MMBD914
Battery-Powered Solenoid Driver
CAP GOOD
5V/DIV
V
ENERGIZE
5V/DIV
I
L1
200mA/DIV
V
CAP
10V/DIV
1316 TA09
500ms/DIV
When Solenoid Is Energized (V
ENERGIZE
High) Peak Input Current
Remains Low and Controlled, Maximizing Battery Life
V
IN
V
IN
SW
R
SET
FB
7
2
65
BAT-85
V
CAP
ZTX949
V
ENERGIZE
8
1
4
3
SHDN
LBI
LBO
LT1316
GND
20k
470k
C1
47µF
16V
2 CELLS
L1
47µH
C1: AVX TPS 47µF, 16V
C2: SANYO 50MV470GX
L1: SUMIDA CD43-470
1316 TA08
SHUTDOWN
CAP
GOOD
+
+
5k
1.3k
2N3904
6.8M
324K
47k
SOLENOID
1N4148
C2
470µF
50V
50k