Datasheet Linear Technology LT8494

Manufacturer	Linear Technology
Series	LT8494

SEPIC/Boost DC/DC Converter with 2A, 70V Switch, and 7µA Quiescent Current

Datasheets

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PDF, 615 Kb, Language: en, File uploaded: Sep 19, 2017, Pages: 26
SEPIC/Boost DC/DC Converter with 2A, 70V Switch, and 7μA Quiescent Current

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Prices

Packaging

	LT8494EFE#PBF	LT8494EFE#TRPBF	LT8494EUF#PBF	LT8494EUF#TRPBF	LT8494HFE#PBF	LT8494HFE#TRPBF	LT8494IFE#PBF	LT8494IFE#TRPBF	LT8494IUF#PBF	LT8494IUF#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	4x4 QFN-20 Package Outline Drawing	4x4 QFN-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	4x4 QFN-20 Package Outline Drawing	4x4 QFN-20 Package Outline Drawing
Package Code	FE	FE	UF	UF	FE	FE	FE	FE	UF	UF
Package Index	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1710	05-08-1710	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1710	05-08-1710
Pin Count	20	20	20	20	20	20	20	20	20	20

Parametrics

Parameters / Models	LT8494EFE#PBF	LT8494EFE#TRPBF	LT8494EUF#PBF	LT8494EUF#TRPBF	LT8494HFE#PBF	LT8494HFE#TRPBF	LT8494IFE#PBF	LT8494IFE#TRPBF	LT8494IUF#PBF	LT8494IUF#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	DC2242A	DC2242A	DC2242A	DC2242A	DC2242A	DC2242A	DC2242A	DC2242A	DC2242A	DC2242A
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, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good
Frequency, kHz	1500	1500	1500	1500	1500	1500	1500	1500	1500	1500
Frequency Adjust Range	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz	250kHz - 1.5MHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Isupply, mA	0.003	0.003	0.003	0.003	0.003	0.003	0.003	0.003	0.003	0.003
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
Polyphase	no	no	no	no	no	no	no	no	no	no
Switch Current, A	2.55	2.55	2.55	2.55	2.55	2.55	2.55	2.55	2.55	2.55
Synchronous	no	no	no	no	no	no	no	no	no	no
Topology	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic
Topology 1	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic	Boost, Sepic
Vin Max, V	32	32	32	32	32	32	32	32	32	32
Vin Min, V	1	1	1	1	1	1	1	1	1	1
Vin Min Startup, V	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
Vout Max, V	70	70	70	70	70	70	70	70	70	70
Vout Maximum	70V	70V	70V	70V	70V	70V	70V	70V	70V	70V
Vout Min, V	1.202	1.202	1.202	1.202	1.202	1.202	1.202	1.202	1.202	1.202
Vref Accuracy Over Temp, %	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Vswitch Max, V	70	70	70	70	70	70	70	70	70	70

Eco Plan

	LT8494EFE#PBF	LT8494EFE#TRPBF	LT8494EUF#PBF	LT8494EUF#TRPBF	LT8494HFE#PBF	LT8494HFE#TRPBF	LT8494IFE#PBF	LT8494IFE#TRPBF	LT8494IUF#PBF	LT8494IUF#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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Design Once; Use Twice: Monolithic SEPIC/Boost Regulators with Wide VIN Range Satisfy Requirements of Both Consumer and Commercial Vehicles &mdash LT Journal
PDF, 164 Kb, File published: Apr 14, 2016
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Design Once; Use Twice: Monolithic SEPIC/Boost Regulators
with Wide VIN Range Satisfy Requirements of Both Consumer
and Commercial Vehicles
Molly Zhu Automobile manufacturers continually add electronic control units (ECUs) to support
increasing numbers of performance, comfort and safety features. ECU power either
comes from a single lead-acid battery in consumer vehicles, or from two batteries in
commercial vehicles. Ideally, an ECU can run off either, enabling a single design for
both consumer and commercial vehicles. This requires that ECU power ICs support
an input range covering both configurationsвЂ”namely 3.5V to 60V. Furthermore,
the power ICs should feature ultralow quiescent current, preserving the vehicleвЂ™s
battery run time when the engine is off, but always-on systems remain engaged.
The LT8495 and LT8494 are high voltage
switching regulators that meet these
requirements when configured as
SEPIC or boost converters. Both parts
operate over 2.5V to 60V input, and
have low quiescent current to extend
the battery life. The quiescent current
of the LT8495 is 9Вµ A, and is 7Вµ A for the
LT8494. The parts are available in 20-lead
QFN and 20-lead TSSOP packages. supply voltage is monitored by poweron reset, and the software/hardware
activities are supervised by watchdog
timers. These functions are integrated …

Model Line

Series: LT8494 (10)

LT8494EFE#PBF LT8494EFE#TRPBF LT8494EUF#PBF LT8494EUF#TRPBF LT8494HFE#PBF LT8494HFE#TRPBF LT8494IFE#PBF LT8494IFE#TRPBF LT8494IUF#PBF LT8494IUF#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > SEPIC Regulators
Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost