Datasheet

16
LT1962 Series
sn1962 1962fas LT/TP 0101 2K REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2000
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear-tech.com
RELATED PARTS
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
LTC1627 High Efficiency Synchronous Step-Down Switching Regulator Burst Mode
TM
Operation, Monolithic, 100% Duty Cycle
LT1761 100mA, Low Noise, Low Dropout Micropower Regulator in SOT-23 20µA Quiescent Current, 20µV
RMS
Noise
LT1762 150mA, Low Noise, LDO Micropower Regulator 25µA Quiescent Current, 20µV
RMS
Noise
LT1763 500mA, Low Noise, LDO Micropower Regulator 30µA Quiescent Current, 20µV
RMS
Noise
LT1764 3A, Fast Transient Response Low Dropout Regulator 340mV Dropout Voltage, 40µV
RMS
Noise
LT1772 Constant Frequency Current Mode Step-Down DC/DC Controller Up to 94% Efficiency, SOT-23 Package, 100% Duty Cycle
LT1963 1.5A, Fast Transient Response Low Dropout Regulator SO-8, SOT-223 Packages
Burst Mode is a trademark of Linear Technology Corporation.
C4
0.01µF
R1
0.1Ω
R2
0.1Ω
R5
10k
R4
2.2k
R7
1.21k
C2
10µF
1962 TA03
V
IN
> 3.7V
3.3V
300mA
C5
0.01µF
8
1
3
2
4
C3
0.01µF
IN
SHDN
OUT
FB
BYP
GND
LT1962-3.3
IN
SHDN
OUT
BYP
ADJ
GND
LT1962
SHDN
+
C1
10µF
+
–
+
1/2 LT1490
R6
2k
R3
2.2k
Paralleling of Regulators for Higher Output Current
IN
SHDN
OUT
V
IN
>2.7V
FB
GND
LT1962-2.5
R7
100k
C1
10µF
*ADJUST R1 FOR 0mA TO 300mA
CONSTANT CURRENT
+
R6
2.2k
LT1004-1.2
C3
0.33µF
C2
1µF
1962 TA04
R5
0.1Ω
R4
2.2k
R3
2k
R2
40.2k
R1*
1k
–
+
LOAD
1/2 LT1490
Adjustable Current Source
TYPICAL APPLICATIO S
U