Datasheet

16
LT1963 Series
1963fa
PART NUMBER DESCRIPTION COMMENTS
LT1120 125mA Low Dropout Regulator with 20µA I
Q
Includes 2.5V Reference and Comparator
LT1121 150mA Micropower Low Dropout Regulator 30µA I
Q
, SOT-223 Package
LT1129 700mA Micropower Low Dropout Regulator 50µA Quiescent Current
LT1175 500mA Negative Low Dropout Micropower Regulator 45µA I
Q
, 0.26V Dropout Voltage, SOT-223 Package
LT1521 300mA Low Dropout Micropower Regulator with Shutdown 15µA I
Q
, Reverse Battery Protection
LT1529 3A Low Dropout Regulator with 50µA I
Q
500mV Dropout Voltage
LT1772 Constant Frequency, Current Mode Step-Down DC/DC Controller Up to 94% Efficiency, SOT-23 Package, 100% Duty Cycle
LTC1627 High Efficiency Synchronous Step-Down Switching Regulator Burst Mode
TM
Operation, Monolithic, 100% Duty Cycle
LT1761 Series 100mA, Low Noise, Low Dropout Micropower Regulators in SOT-23 20µA Quiescent Current, 20µV
RMS
Noise, SOT-23 Package
LT1762 Series 150mA, Low Noise, LDO Micropower Regulators 25µA Quiescent Current, 20µV
RMS
Noise, MSOP Package
LT1763 Series 500mA, Low Noise, LDO Micropower Regulators 30µA Quiescent Current, 20µV
RMS
Noise, SO-8 Package
LT1764 Series 3A, Fast Transient Response Low Dropout Regulator 340mV Dropout Voltage, 40µV
RMS
Noise
LT1962 Series 300mA, Low Noise, LDO Micropower Regulator 30µA Quiescent Current, 20µV
RMS
Noise, MSOP Package
Burst Mode is a trademark of Linear Technology Corporation.
LT/TP 0602 1.5K REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2000
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
RELATED PARTS
LT1963-3.3
IN
SHDN
OUT
FB
GND
LT1963
IN
SHDN
OUT
FB
GND
+
+
R1
0.01Ω
R2
0.01Ω
R3
2.2k
R4
2.2k
R5
1k
R6
6.65k
R7
4.12k
C1
100µF
C3
0.01µF
C2
22µF
V
IN
> 3.7V
SHDN
3.3V
3A
8
4
3
2
1
–
+
1/2
LT1366
1963 TA05
TYPICAL APPLICATIO S
U
Paralleling of Regulators for Higher Output Current
+
LT1004-1.2
V
IN
> 2.7V
C1
10µF
R3
2k
R1
1k
R2
80.6k
R4
2.2k
R5
0.01Ω
R6
2.2k
LT1963-1.8
IN
SHDN
OUT
FB
GND
–
+
1/2
LT1366
R8
100k
LOAD
R7
470Ω
2
1
8
3
4
C3
1µF
C2
3.3µF
1963 TA04
NOTE: ADJUST R1 FOR
0A TO 1.5A CONSTANT CURRENT
Adjustable Current Source