Datasheet Linear Technology LT3437

Manufacturer	Linear Technology
Series	LT3437

High Voltage 500mA, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current

Datasheets

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PDF, 573 Kb, Language: en, File uploaded: Sep 18, 2017, Pages: 28
High Voltage 500mA, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current

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Packaging

	LT3437EDD#PBF	LT3437EDD#TRPBF	LT3437EFE#PBF	LT3437EFE#TRPBF	LT3437HFE#PBF	LT3437HFE#TRPBF	LT3437IDD#PBF	LT3437IDD#TRPBF	LT3437IFE#PBF	LT3437IFE#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing
Package Code	DD	DD	FE	FE	FE	FE	DD	DD	FE	FE
Package Index	05-08-1699	05-08-1699	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1699	05-08-1699	05-08-1663 (BC)	05-08-1663 (BC)
Pin Count	10	10	16	16	16	16	10	10	16	16

Parametrics

Parameters / Models	LT3437EDD#PBF	LT3437EDD#TRPBF	LT3437EFE#PBF	LT3437EFE#TRPBF	LT3437HFE#PBF	LT3437HFE#TRPBF	LT3437IDD#PBF	LT3437IDD#TRPBF	LT3437IFE#PBF	LT3437IFE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1232A	DC1232A	DC1232A	DC1232A	DC1232A	DC1232A	DC1232A	DC1232A	DC1232A	DC1232A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no	no	no	no	no	no	no
Features	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode
Frequency, kHz	200	200	200	200	200	200	200	200	200	200
Frequency Sync Range	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz	240kHz - 700kHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Isupply, mA	0.075	0.075	0.075	0.075	0.075	0.075	0.075	0.075	0.075	0.075
Max Phases	1	1	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4
Over Voltage Protection, V	80	80	80	80	80	80	80	80	80	80
Polyphase	no	no	no	no	no	no	no	no	no	no
Switch Current, A	0.65	0.65	0.65	0.65	0.65	0.65	0.65	0.65	0.65	0.65
Synchronous	no	no	no	no	no	no	no	no	no	no
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	60	60	60	60	60	60	60	60	60	60
Vin Min, V	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3
Vout Max, V	54	54	54	54	54	54	54	54	54	54
Vout Maximum	.90VIN	.90VIN	.90VIN	.90VIN	.90VIN	.90VIN	.90VIN	.90VIN	.90VIN	.90VIN
Vout Min, V	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25
Vref Accuracy Over Temp, %	2	2	2	2	2	2	2	2	2	2

Eco Plan

	LT3437EDD#PBF	LT3437EDD#TRPBF	LT3437EFE#PBF	LT3437EFE#TRPBF	LT3437HFE#PBF	LT3437HFE#TRPBF	LT3437IDD#PBF	LT3437IDD#TRPBF	LT3437IFE#PBF	LT3437IFE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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Monolithic Step-Down Regulator Withstands The Rigors of Automotive Environments and Consumes Only 100ВµA of Quiescent Current &mdash DN378
PDF, 129 Kb, File published: Oct 19, 2005
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advertisement Monolithic Step-Down Regulator Withstands The Rigors of
Automotive Environments and Consumes Only 100ВµA of
Quiescent Current вЂ“ Design Note 378
Rich Philpott
Introduction
Automobile electronic systems place high demands on
todayвЂ™s DC/DC converters. They must be able to precisely
regulate an output voltage in the face of wide temperature
and input voltage rangesвЂ”including load dump transients
in excess of 60V and cold crank voltage drops to 4V. The
converter must also be able to minimize battery drain in
always-on systems by maintaining high efп¬Ѓciency over a
broad load current range. Similar demands are made by
many 48V nonisolated telecom applications, 40V FireWire
peripherals and battery-powered applications with auto
plug adaptors. The LT3437вЂ™s best in class performance
meets all of these requirements in a small thermally
enhanced 3mm Г— 3mm DFN package.
Features of the LT3437
The LTВ® 3437 is a 200kHz п¬Ѓxed frequency, 500mA
monolithic buck switching regulator. Its 3.3V to 80V
input voltage range makes the LT3437 ideal for harsh
automotive environments. Micropower bias current and …

Model Line

Series: LT3437 (10)

LT3437EDD#PBF LT3437EDD#TRPBF LT3437EFE#PBF LT3437EFE#TRPBF LT3437HFE#PBF LT3437HFE#TRPBF LT3437IDD#PBF LT3437IDD#TRPBF LT3437IFE#PBF LT3437IFE#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators