Linear Technology LT3081, Datasheet, Page: 32 / 32

LT3081
32
3081fc
For more information www.linear.com/LT3081
 LINEAR TECHNOLOGY CORPORATION 2014
LT 0315 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX : (408) 434-0507
●
www.linear.com/LT3081
relaTeD parTs
Typical applicaTion
High Efficiency Adjustable Supply
PART NUMBER DESCRIPTION COMMENTS
LT1185 3A Negative Low Dropout Regulator V
IN
: –4.5V to –35V, 0.8V Dropout Voltage, DD-Pak and TO-220 Packages
LT1764/
LT1764A
3A, Fast Transient Response,
Low Noise LDO
340mV Dropout Voltage, Low Noise: 40µV
RMS
, V
IN
= 2.7V to 20V, TO-220, TSSOP and DD-Pak,
LT1764A Version Stable Also with Ceramic Capacitors
LT1963/
LT1963A
1.5A Low Noise, Fast Transient
Response LDO
340mV Dropout Voltage, Low Noise: 40µV
RMS
, V
IN
= 2.5V to 20V, LT1963A Version Stable with
Ceramic Capacitors, TO-220, DD, TSSOP, SOT-223 and SO-8 Packages
LT1965 1.1A, Low Noise, Low Dropout
Linear Regulator
290mV Dropout Voltage, Low Noise: 40µV
RMS
, V
IN
: 1.8V to 20V, V
OUT
: 1.2V to 19.5V, Stable with
Ceramic Capacitors, TO-220, DD-Pak, MSOP and 3mm × 3mm DFN Packages
LT3022 1A, Low Voltage, VLDO Linear
Regulator
V
IN
: 0.9V to 10V, Dropout Voltage: 145mV Typical, Adjustable Output (V
REF
= V
OUT(MIN)
= 200mV),
Stable with Low ESR, Ceramic Output Capacitors, 16-Pin DFN (5mm × 3mm) and 16-Lead
MSOP Packages
LT3070 5A, Low Noise, Programmable
V
OUT
, 85mV Dropout Linear
Regulator with Digital Margining
Dropout Voltage: 85mV, Digitally Programmable V
OUT
: 0.8V to 1.8V, Digital Output Margining: ±1%,
±3% or ±5%, Low Output Noise: 25µV
RMS
(10Hz to 100kHz), Parallelable: Use Two for a 10A Output,
Stable with Low ESR Ceramic Output Capacitors (15µF Minimum), 28-Lead 4mm × 5mm QFN Package
LT3071 5A, Low Noise, Programmable
V
OUT
, 85mV Dropout Linear
Regulator with Analog Margining
Dropout Voltage: 85mV, Digitally Programmable V
OUT
: 0.8V to 1.8V, Analog Margining: ±10%,
Low Output Noise: 25µV
RMS
(10Hz to 100kHz), Parallelable: Use Two for a 10A Output, I
MON
Output
Current Monitor, Stable with Low ESR Ceramic Output Capacitors (15µF Minimum) 28-Lead
4mm × 5mm QFN Package
LT3080/
LT3080-1
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, DD-Pak, SOT-223, MS8E and 3mm × 3mm DFN-8 Packages;
LT3080-1 Version Has Integrated Internal Ballast Resistor
LT3082 200mA, Parallelable, Single
Resistor, Low Dropout Linear
Regulator
Outputs May Be Paralleled for Higher Output, Current or Heat Spreading, Wide Input Voltage
Range: 1.2V to 40V Low Value Input/Output Capacitors Required: 2.2µF, Single Resistor Sets Output
Voltage 8-Lead SOT-23, 3-Lead SOT-223 and 8-Lead 3mm × 3mm DFN Packages
LT3085 500mA, Parallelable, Low Noise,
Low Dropout Linear Regulator
275mV 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, MS8E and 2mm × 3mm DFN-6 Packages
LT3092 200mA 2-Terminal Programmable
Current Source
Programmable 2-Terminal Current Source, Maximum Output Current = 200mA, Wide Input Voltage
Range: 1.2V to 40V, Resistor Ratio Sets Output Current, Initial Set Pin Current Accuracy = 1%, Current
Limit and Thermal Shutdown Protection, Reverse-Voltage Protection, Reverse-Current Protection,
8-Lead SOT-23, 3-Lead SOT-223 and 8-Lead 3mm × 3mm DFN Packages.
LT3083 Adjustable 3A Single Resistor
Low Dropout Regulator
Low Noise: 40µV
RMS
, 50µA Set Pin Current, Output Adjustable to 0V, Wide Input Voltage Range: 1.2V to 23V
(DD-Pak and TO-220), Low Dropout Operation: 310mV (2 Supplies)
RUN/SS
0.47µF
47µF
1µF
1µF
1000pF
V
IN
6.3V TO
36V
6.8µH
V
IN
BD
LT3680
15k
590k
1k
10k
3081 TA13
2N3904
MTD2955
CMDSH-4E
MBRA340T3
GND
BOOST
IN OUT
I
MON
I
LIM
1k
1k
V
C
SW
FB
63.4k
RT
PG
SYNC
15k
6.04k
LT3081
500k
22µF
6V
V
OUT
0V TO
25V,
1.5A
TEMP SET
0.1µF