LT1534/LT1534-1
TYPICAL APPLICATION
Low Noise Wide Input Range
鹵5V
Supply
C2
10碌F
16V
V
IN
3V TO 12V
+
4
12
10
+
SYNC
SHDN
NFB
LT1534-1
11
6.8k
V
C
R
T
6
220pF
0.01碌F
16.9k
RELATED PARTS
PART NUMBER
LT1129
LT1175
LT1370
LT1371
LT1377
LT1425
LT1533
LT1763
LT1777
DESCRIPTION
700mA Micropower Low Dropout Regulator
500mA Negative Low Dropout Micropower Regulator
500kHz High Efficiency 6A Switching Regulator
500kHz High Efficiency 3A Switching Regulator
1MHz High Efficiency 1.5A Switching Regulator
Isolated Flyback Switching Regulator
Ultralow Noise 1A Switching Regulator
500mA Low Noise Micropower LDO
700mA Low Noise Step-Down Switching Regulator
COMMENTS
0.4V Dropout Voltage, Reverse Battery Protection
Positive or Negative Shutdown Logic
90% Efficiency, Constant Frequency, High Power
90% Efficiency, Constant Frequency, Synchronizable
High Frequency, Small Inductor
Excellent Regulation Without Transformer 鈥淭hird Winding鈥?/div>
Push-Pull Design for Low Noise Isolated Supplies
20碌V
RMS
(10Hz to 100kHz), 30碌A(chǔ) Quiescent Current
Programmable dI/dt Limit, 48VMax V
IN
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900
q
FAX: (408) 434-0507
q
www.linear-tech.com
U
1N5817
1
T1
6
+
C1
10碌F
16V
V
OUT1
5V
150mA*
C4
47碌F
6.3V
4
2
3
12
+
15
V
IN
COL
2
L2
28nH
PGND
3
7.5k
V
OUT1
2.49k
4k TO
25k
10鈩?/div>
5
9
C3
10碌F
1nF 16V
11 1N5817
T1
8
10
T1
7
V
OUT2
鈥?5V
150mA*
+
FB
C
T
5
GND R
VSL
R
CSL
13
1,8 14
9,16
4k TO
1500pF
25k
7
C5
47碌F
6.3V
*TOTAL OUTPUT CURRENT
鈮?/div>
300mA
C1, C2, C3: MATSUSHITA ECGCICB6R8
C4, C5: MATSUSHITA ECGC0JB470
L2: COILCRAFT B08T OR PC TRACE
T1: COILTRONICS VP2-0216
1534 TA03
1534fa LT/TP 0300 2K REV A 鈥?PRINTED IN USA
漏
LINEAR TECHNOLOGY CORPORATION 1998
prev