LT3085
28
3085fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0610 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LDOs
LT1086 1.5A Low Dropout Regulator Fixed 2.85V, 3.3V, 3.6V, 5V and 12V Output
LT1763 500mA, Low Noise LDO 300mV Dropout Voltage, Low Noise = 20μV
RMS
, V
IN
: 1.8V to 20V, SO-8 Package
LT3021 500mA VLDO Regulator V
IN
: 0.9V to 10V, Dropout Voltage = 190mV, V
ADJ
= 200mV, 5mm × 5mm DFN-16,
SO-8 Packages
LT3080 1.1A, Parallelable, Low Noise,
Low Dropout Linear Regulator
300mV Dropout Voltage (2-Supply Operation), Low Noise = 40μV
RMS
, V
IN
: 1.2V to 36V,
V
OUT
: 0V to 35.7V, Current-Based Reference with 1-Resistor V
OUT
Set, Directly Parallelable
(No Op Amp Required), Stable with Ceramic Capacitors, TO-220, SOT-223, MSOP and
3mm × 3mm DFN Packages
LT3080-1 Parallelable 1.1A Adjustable Single
Resistor Low Dropout Regulator
(with Internal Ballast R)
300mV Dropout Voltage (2-Supply Operation), Low Noise = 40μV
RMS
, V
IN
: 1.2V to 36V,
V
OUT
: 0V to 35.7V, Current-Based Reference with 1-Resistor V
OUT
Set, Directly Parallelable
(No Op Amp Required), Stable with Ceramic Capacitors, TO-220, SOT-223, MSOP and
3mm × 3mm DFN Packages. LT3080-1 Version Has Integrated Ballast Resistor
LT1963A 1.5A Low Noise, Fast Transient
Response LDO
340mV Dropout Voltage, Low Noise = 40μV
RMS
, V
IN
: 2.5V to 20V, TO-220, DD, SOT-223
and SO-8 Packages
LT1965 1.1A Low Noise LDO 290mV Dropout Voltage, Low Noise = 40μV
RMS
, V
IN
: 1.8V to 20V, V
OUT
: 1.2V to 19.5V,
Stable with Ceramic Caps TO-220, DDPak, MSOP and 3mm × 3mm DFN Packages
LT C
®
3026 1.5A Low Input Voltage VLDO
TM
Regulator
V
IN
: 1.14V to 3.5V (Boost Enabled), 1.14V to 5.5V (with External 5V), V
DO
= 0.1V,
I
Q
= 950μA, Stable with 10μF Ceramic Capacitors, 10-Lead MSOP and DFN Packages
Switching Regulators
LT1976 High Voltage, 1.5A Step-Down
Switching Regulator
f = 200kHz, I
Q
= 100μA, TSSOP-16E Package
LTC3414 4A (I
OUT
), 4MHz Synchronous
Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.8V, TSSOP Package
LTC3406/LTC3406B 600mA (I
OUT
), 1.5MHz Synchronous
Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 20μA, I
SD
< 1μA,
ThinSOT
TM
Package
LTC3411 1.25A (I
OUT
), 4MHz Synchronous
Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60μA, I
SD
< 1μA, 10-Lead MS or
DFN Packages
Paralleling Regulators
+
–
LT3085
IN
V
IN
4.8V TO 36V
V
CONTROL
OUT
20mΩ
10μF
V
OUT
3.3V
1.5A
3085 TA14
165k
SET
1μF
+
–
LT3080
IN
V
CONTROL
OUT
10mΩ
SET
