LT1533C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1533C' PDF : 20 Pages View PDF
LT1533
TYPICAL APPLICATIONS
Low Noise 5V to –12V Forward Push-Pull Converter. Output Noise Is Below 100µV.
Noise Performance Is Identical to Positive Output Version. See AN70 for Details
+
5V
14
1N4148
T1
( ) L2
L3 OPTIONAL FOR
100µH –12V 100µH LOWEST RIPPLE
4.7µF
11 SHDN
VIN
2
COL A
3 DUTY
15
3300pF
4
SYNC
COL B
L1
5 CT
16
PGND
18k
6 RT
LT1533
13
RVSL
12
15k
15k
RCSL
1N4148
+ 47µF
+ 47µF
9.6k
10
VC GND
0.01µF
9
8
NFB
FB
2.4k
7
1%
1%
1533 TA03
L1: 22nH INDUCTOR. COILCRAFT B-07T TYPICAL,
TRACE INDUCTANE OR BEAD
L2, L3: COILTRONICS CTX100-3
T1: COILTRONICS CTX02-13665-X1
Electronic Equivalent of 9V Battery Operates from Three NiCd Cells.
Output Noise Is Below 100µV. See AN70 for Details
2.7V TO 4V
(3 NiCd BATTERIES)
+
14
4.7µF
11 SHDN
VIN
2
COL A
3300pF
18k
3
DUTY
15
4
COL B
SYNC
5 CT
16
PGND
LT1533
13
6 RT
RVSL
12
RCSL
1N4148
T1
L2
L1
9V
100µH
( ) L3 OPTIONAL FOR
100µH LOWEST RIPPLE
+
1N4148
47µF
+
47µF
15k
15k
21.5k
1%
10
VC GND
0.01µF
9
7
FB
NFB
8
3.48k
1%
1533 TA04
L1, L3: COILTRONICS CTX100-3
L2: 22nH TRACE INDUCTANCE, FERRITE BEAD OR
INDUCTOR COILCRAFT B-07T TYPICAL
T1: CTX02-13665-X1
16
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