Linear AN124-775, Приложения к руководству пользователя

Страница: 10 / 12

Application Note 124
AN124-10
an124f
+
V
IN
C
T
6V
3300pF
R
VSL
GND FB
R
T
R
CSL
DUTY
LT1533
PGND
COL A
COL B
15k
4.7μF
15k
3 2
15 16 8 9
14 13 12
6
5
2
3
4
7
12
10
9
5
6V
18k L1
T1
100μF
4.7μF
+
+
100μF
AN124 FC3
+
+
+
L1: 22nH INDUCTOR. COILCRAFT B-07T TYPICAL,
PC TRACE, OR FERRITE BEAD
L2, L3: PULSE ENGINEERING. PE92100
T1: COILTRONICS CTX-02-13664-X1
: 1N4148
* = 1% METAL FILM
10k 43k
5V
L1
25μH
–15V
OUT
15V
OUT
OUT
COMMON
L2
25μH
10k*
4.99k*
5k
8
4
6V BATTERY
4x 1.5V
ALKALINE
D CELL
LT1010
+
–
1/2 LT1013
1μF
47μF
0.1μF
47μF
0.1μF
10V
OUT
IN
19V UNREGULATED
–19V UNREGULATED
LT1021
10k*
10k*
LT1010
+
–
1/2 LT1013
Figure C3. A Low Noise, Bipolar, Floating Output Converter. Grounding LT1533 “DUTY” Pin and Biasing FB Puts Regulator into 50%
Duty Cycle Mode. LT1533’s Controlled Transition Times Permit <100μV Broadband Output Noise; Discrete Linear Regulators Maintain
Low Noise, Provide Regulation