Datasheet Linear Technology LT1976

Manufacturer	Linear Technology
Series	LT1976

High Voltage 1.5A, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current

Datasheets

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PDF, 314 Kb, Language: en, File uploaded: Sep 3, 2017, Pages: 28
High Voltage 1.5A, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current

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Packaging

	LT1976BEFE#PBF	LT1976BEFE#TRPBF	LT1976BIFE#PBF	LT1976BIFE#TRPBF	LT1976EFE#PBF	LT1976EFE#TRPBF	LT1976HFE#PBF	LT1976HFE#TRPBF	LT1976IFE#PBF	LT1976IFE#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing
Package Code	FE	FE	FE	FE	FE	FE	FE	FE	FE	FE
Package Index	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)
Pin Count	16	16	16	16	16	16	16	16	16	16

Parametrics

Parameters / Models	LT1976BEFE#PBF	LT1976BEFE#TRPBF	LT1976BIFE#PBF	LT1976BIFE#TRPBF	LT1976EFE#PBF	LT1976EFE#TRPBF	LT1976HFE#PBF	LT1976HFE#TRPBF	LT1976IFE#PBF	LT1976IFE#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	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A	DC481A,DC977A
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	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, External Synchronization
Frequency, kHz	200	200	200	200	200	200	200	200	200	200
Frequency Sync Range	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz	230kHz - 600kHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	1	1	1	1	1	1	1	1	1	1
Isupply, mA	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
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	-40 to 85	-40 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Output Current, A	1.24	1.24	1.24	1.24	1.24	1.24	1.24	1.24	1.24	1.24
Polyphase	no	no	no	no	no	no	no	no	no	no
Subname	LT1976	LT1976	LT1976	LT1976	LT1976	LT1976	LT1976	LT1976	LT1976	LT1976
Switch Current, A	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4
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	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2
Vref Accuracy Over Temp, %	2	2	2	2	2	2	2	2	2	2

Eco Plan

	LT1976BEFE#PBF	LT1976BEFE#TRPBF	LT1976BIFE#PBF	LT1976BIFE#TRPBF	LT1976EFE#PBF	LT1976EFE#TRPBF	LT1976HFE#PBF	LT1976HFE#TRPBF	LT1976IFE#PBF	LT1976IFE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Other Options

LT1976B

Design Notes

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60V Step-Down DC/DC Converter Has Only 100ВµA Quiescent Current &mdash DN1007
PDF, 61 Kb, File published: Mar 8, 2005
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advertisement 60V Step-Down DC/DC Converter Has Only
100ВµA Quiescent Current вЂ“ Design Note 1007
Keith Szolusha
Introduction
High voltage bipolar monolithic step-down converters are
usually optimized for high efficiency at high output currents. But the consumption of over 1mA quiescent current
at zero load can be undesirable in battery-powered applications which operate with long periods of light load current. Although a shutdown function may reduce the
quiescent current in order to save battery life, it also drops
the output voltage to zero. In systems where a regulated
output voltage is always needed for light load applications
such as system diagnostics (and ready-to-use load transients), a solution with high efficiency at light load is needed.
The LTВ®1976 is designed to optimize efficiency over all
current levels, both high and low, with an extremely wide
input voltage range. Micropower bias current and Burst
ModeВ® operation enable it to consume a mere 100ВµA at
zero load and 12V input. The high efficiency bipolar NPN
power switch (0.2в„¦) provides up to 90% efficiency at load
current up to 1.25A.
The LT1976 is a 1.5A monolithic buck switching regulator. Its 3.3V to 60V input voltage range makes the LT1976 VIN
4V TO 60V 4.7ВµF
100V
CER VIN ideal for 14V and 42V (future) automotive applications
which must meet both sub-4V cold crank and high input …

Model Line

Series: LT1976 (10)

LT1976BEFE#PBF LT1976BEFE#TRPBF LT1976BIFE#PBF LT1976BIFE#TRPBF LT1976EFE#PBF LT1976EFE#TRPBF LT1976HFE#PBF LT1976HFE#TRPBF LT1976IFE#PBF LT1976IFE#TRPBF

Manufacturer's Classification

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