LT3500EMSE#PBF

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Analog Devices Inc./Maxim Integrated

MONOLITHIC 2A STEP-DOWN REGULATOR PLUS LINEAR REGULATOR/CONTROLLER

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LT3500EMSE#PBF

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Analog Devices Inc./Maxim Integrated

MONOLITHIC 2A STEP-DOWN REGULATOR PLUS LINEAR REGULATOR/CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3500 Series

The LT3500 is a current mode PWM step-down DC/DC converter with an internal 2.3A switch. The wide input range of 3V to 40V makes the LT3500 suitable for regulating power from a wide variety of sources, including automotive batteries, 24V industrial supplies and unregulated wall adapters.Resistor-programmable 250kHz to 2.2MHz frequency range and synchronization capability enable optimization between efficiency and external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against a shorted output. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up, and also provides output tracking.The LT3500 contains an internal NPN transistor with feedback control which can be configured as a linear regulator or as a linear regulator controller.The LT3500’s low current shutdown mode (<12μA) enables easy power management in battery-powered systems.ApplicationsAutomotive Battery RegulationIndustrial ControlWall Transformer RegulationDistributed Power Regulation

Technical Specifications

Parameters and characteristics for this part

Specification	LT3500EMSE#PBF

Current - Output 1	2 A
Current - Output 2	13 mA
Frequency - Switching (Max)	2.4 MHz
Frequency - Switching (Min)	500 kHz
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package Features	Exposed Pad
Package Length	0.118 in
Package Name	16-TFSOP, 16-MSOP-EP
Package Width	3 mm
Topology	Step-Down (Buck) (1), Linear (LDO) (1)
Voltage - Output 1 (Max)	38.9 V
Voltage - Output 1 (Min)	800 mV
Voltage - Supply (Maximum)	36 VDC
Voltage - Supply (Minimum)	3 V
Voltage/Current - Output 2 Mode	Adjustable
w/LED Driver	No
w/Sequencer	No
w/Supervisor	No

LT3500 Series

Part	Number of Outputs	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Package Width	Package Name	Package Length	w/Sequencer	Voltage/Current - Output 2 Mode	Current - Output 2	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type	Package / Case	Voltage - Output 1 (Max)	Voltage - Output 1 (Min)	Current - Output 1	Frequency - Switching (Max)	Frequency - Switching (Min)	Topology	w/Supervisor	w/LED Driver	Package Features
Analog Devices Inc./Maxim Integrated LT3500HDD#TRPBF	2	36 VDC	3 V	3 mm	12-DFN	3 mm	No	Adjustable	13 mA	-40 °C	150 °C	Surface Mount	12-WFDFN Exposed Pad	38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No
Analog Devices Inc./Maxim Integrated LT3500EDD#PBF	2	36 VDC	3 V	3 mm	12-DFN	3 mm	No	Adjustable	13 mA	-40 °C	125 °C	Surface Mount	12-WFDFN Exposed Pad	38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No
Analog Devices Inc./Maxim Integrated LT3500EMSE#PBF	2	36 VDC	3 V	3 mm	16-MSOP-EP 16-TFSOP	0.118 in	No	Adjustable	13 mA	-40 °C	125 °C	Surface Mount		38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3500IDD#TRPBF	2	36 VDC	3 V	3 mm	12-DFN	3 mm	No	Adjustable	13 mA	-40 °C	125 °C	Surface Mount	12-WFDFN Exposed Pad	38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No
Analog Devices Inc./Maxim Integrated LT3500IMSE#PBF	2	36 VDC	3 V	3 mm	16-MSOP-EP 16-TFSOP	0.118 in	No	Adjustable	13 mA	-40 °C	125 °C	Surface Mount		38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3500EMSE#TRPBF	2	36 VDC	3 V	3 mm	16-MSOP-EP 16-TFSOP	0.118 in	No	Adjustable	13 mA	-40 °C	125 °C	Surface Mount		38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3500HDD#PBF	2	36 VDC	3 V	3 mm	12-DFN	3 mm	No	Adjustable	13 mA	-40 °C	150 °C	Surface Mount	12-WFDFN Exposed Pad	38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No
Analog Devices Inc./Maxim Integrated LT3500HMSE#TRPBF	2	36 VDC	3 V	3 mm	16-MSOP-EP 16-TFSOP	0.118 in	No	Adjustable	13 mA	-40 °C	150 °C	Surface Mount		38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3500HMSE#PBF	2	36 VDC	3 V	3 mm	16-MSOP-EP 16-TFSOP	0.118 in	No	Adjustable	13 mA	-40 °C	150 °C	Surface Mount		38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3500IDD#PBF	2	36 VDC	3 V	3 mm	12-DFN	3 mm	No	Adjustable	13 mA	-40 °C	125 °C	Surface Mount	12-WFDFN Exposed Pad	38.9 V	800 mV	2 A	2.4 MHz	500 kHz	Linear (LDO) (1) Step-Down (Buck) (1)	No	No

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT3500EMSE#PBF | Datasheet

R530 Reliability Data