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Analog Devices-LTC2431IMS#PBF Analog to Digital Converters - ADCs 1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 10-Pin MSOP Tube
Integrated Circuits (ICs)

LT3973IMSE-3.3#TRPBF

Active
Analog Devices

42V, 750MA STEP-DOWN REGULATOR WITH 2.5ΜA QUIESCENT CURRENT AND INTEGRATED DIODES

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Search across all available documentation for this part.

DocumentsR530 Reliability DataTape and Reel Packaging+1
Analog Devices-LTC2431IMS#PBF Analog to Digital Converters - ADCs 1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 10-Pin MSOP Tube
Integrated Circuits (ICs)

LT3973IMSE-3.3#TRPBF

Active
Analog Devices

42V, 750MA STEP-DOWN REGULATOR WITH 2.5ΜA QUIESCENT CURRENT AND INTEGRATED DIODES

Deep-Dive with AI

DocumentsR530 Reliability DataTape and Reel Packaging+1

Technical Specifications

Parameters and characteristics for this part

SpecificationLT3973IMSE-3.3#TRPBF
Current - Output750 mA
Frequency - Switching [Max]2.15 MHz
Frequency - Switching [Min]195 kHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature [Max]125 ¯C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output Type1.81 mOhm
Package / Case3 Lead, 0.118 in
Package / CaseExposed Pad, 10-TFSOP, 10-MSOP
Supplier Device Package10-MSOP-EP
Synchronous RectifierFalse
TopologyBuck
Voltage - Input (Max) [Max]42 V
Voltage - Input (Min) [Min]4.2 V
Voltage - Output (Min/Fixed)3.3 V

LT3973 Series

42V, 750mA Step-Down Regulator with 2.5μA Quiescent Current and Integrated Diodes

PartCurrent - OutputFunctionVoltage - Output (Max)Output TypeSynchronous RectifierVoltage - Input (Max) [Max]Package / CaseOperating Temperature [Min]Operating Temperature [Max]Supplier Device PackageNumber of OutputsTopologyVoltage - Output (Min/Fixed)Output ConfigurationFrequency - Switching [Min]Frequency - Switching [Max]Voltage - Input (Min) [Min]Mounting TypeOutput TypePackage / Case
10-WDFN
Analog Devices
LT3973IDD#TRPBF
750 mA
Step-Down
24 V
Adjustable
42 V
10-WFDFN Exposed Pad
-40 °C
125 ¯C
10-DFN (3x3)
1
Buck
1.21 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
10-WDFN
Analog Devices
LT3973HDD-5#TRPBF
750 mA
Step-Down
42 V
10-WFDFN Exposed Pad
-40 °C
150 °C
10-DFN (3x3)
1
Buck
5 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
1.81 mOhm
Analog Devices-LTC2431IMS#PBF Analog to Digital Converters - ADCs 1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 10-Pin MSOP Tube
Analog Devices
LT3973HMSE#PBF
750 mA
Step-Down
24 V
Adjustable
42 V
10-MSOP
10-TFSOP
Exposed Pad
-40 °C
150 °C
10-MSOP-EP
1
Buck
1.21 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
0.118 in
3 Lead
10 MSOP EP
Analog Devices
LT3973EMSE#PBF
750 mA
Step-Down
24 V
Adjustable
42 V
10-MSOP
10-TFSOP
Exposed Pad
-40 °C
125 ¯C
10-MSOP-EP
1
Buck
1.21 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
0.118 in
3 Lead
10 MSOP EP
Analog Devices
LT3973IMSE-3.3#PBF
750 mA
Step-Down
42 V
10-MSOP
10-TFSOP
Exposed Pad
-40 °C
125 ¯C
10-MSOP-EP
1
Buck
3.3 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
1.81 mOhm
0.118 in
3 Lead
10-WDFN
Analog Devices
LT3973IDD#PBF
750 mA
Step-Down
24 V
Adjustable
42 V
10-WFDFN Exposed Pad
-40 °C
125 ¯C
10-DFN (3x3)
1
Buck
1.21 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
10 MSOP EP Pad View
Analog Devices
LT3973EMSE-5#TRPBF
750 mA
Step-Down
42 V
10-MSOP
10-TFSOP
Exposed Pad
-40 °C
125 ¯C
10-MSOP-EP
1
Buck
5 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
1.81 mOhm
0.118 in
3 Lead
Analog Devices-LTC2431IMS#PBF Analog to Digital Converters - ADCs 1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 10-Pin MSOP Tube
Analog Devices
LT3973IMSE-3.3#TRPBF
750 mA
Step-Down
42 V
10-MSOP
10-TFSOP
Exposed Pad
-40 °C
125 ¯C
10-MSOP-EP
1
Buck
3.3 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
1.81 mOhm
0.118 in
3 Lead
Analog Devices-LTC2431IMS#PBF Analog to Digital Converters - ADCs 1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 10-Pin MSOP Tube
Analog Devices
LT3973HMSE-3.3#PBF
750 mA
Step-Down
42 V
10-MSOP
10-TFSOP
Exposed Pad
-40 °C
150 °C
10-MSOP-EP
1
Buck
3.3 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount
1.81 mOhm
0.118 in
3 Lead
10-WDFN
Analog Devices
LT3973EDD#TRPBF
750 mA
Step-Down
24 V
Adjustable
42 V
10-WFDFN Exposed Pad
-40 °C
125 ¯C
10-DFN (3x3)
1
Buck
1.21 V
Positive
195 kHz
2.15 MHz
4.2 V
Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyCut Tape (CT) 1$ 10.73
Digi-Reel® 1$ 10.73
Tape & Reel (TR) 2500$ 4.71

Description

General part information

LT3973 Series

The LT3973 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 42V, and consumes only 2.5μA of quiescent current. A high efficiency switch is included on the die along with the catch diode, boost diode, and the necessary oscillator, control and logic circuitry. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping the output ripple below 10mV in a typical application. A minimum dropout voltage of 530mV is maintained when the input voltage drops below the programmed output voltage, such as during automotive cold crank. Current mode topology is used for fast transient response and good loop stability. A catch diode current limit provides protection against shorted outputs and overvoltage conditions, with thermal shutdown providing additional fault protection. An accurate programmable undervoltage lockout feature is available, producing a low shutdown current of 0.75μA. A power good flag signals when VOUTreaches 90% of the programmed output voltage. The LT3973 is available in small, thermally enhanced 10-lead MSOP and 3mm × 3mm DFN packages.ApplicationsAutomotive Battery RegulationPower for Portable ProductsIndustrial SuppliesGate Drive Bias