LT8494

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet Product Selection Table

Part Models: 10
1ku List Price: Starting From $3.42

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Part Details

Low Ripple Burst Mode^® Operation:
- 7μA I_Q at 12V_IN to 5V_OUT
- Output Ripple (<10mV Typ.)
Dual Supply Pins:
- Improves Efficiency
- Reduces Minimum Supply Voltage to ~1V after
- Start-Up to Extend Battery Life
Wide Input Voltage Range of ~1V to 60V (2.5V to 32V for Start-Up)
PG Functional for Input Supply Down to 1.3V
FMEA Fault Tolerant in TSSOP Package
Fixed Frequency PWM, SEPIC/BOOST/FLYBACK Topologies
NPN Power Switch: 2A/70V
Programmable Switching Frequency: 250kHz to 1.5MHz
UVLO Programmable on SWEN Pin
Soft-Start Programmable with One Capacitor
Small 20-Lead QFN or 20-Lead TSSOP Packages

Part Models: 10
1ku List Price: Starting From $3.42

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT8494EFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494EFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494EUF#PBF	20-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494EUF#TRPBF	20-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494HFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494HFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494IFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494IFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494IUF#PBF	20-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8494IUF#TRPBF	20-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LT8494EFE#PBF	PRODUCTION
LT8494EFE#TRPBF	PRODUCTION
LT8494HFE#PBF	PRODUCTION
LT8494HFE#TRPBF	PRODUCTION
LT8494IFE#PBF	PRODUCTION
LT8494IFE#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
LT8495	RECOMMENDED FOR NEW DESIGNS	SEPIC/Boost Converter with 2A, 70V Switch, 9μA Quiescent Current, POR and Watchdog Timer

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LT8494

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LT8494EFE Demo Board | SEPIC, 3V ≤ VIN ≤ 60V; VOUT = 5V @ 1A

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Product Details

Demonstration circuit 2242A is a monolithic SEPIC converter featuring LT8494. The demo board is designed for 5V output from a 3V to 60V input at 450kHz switching frequency. The max output current is 1A when the input voltage is above 12V, and is reduced with lower input voltage. The quiescent current of LT8494 is less than 7μA when operating. Dual supply pins (V_IN and BIAS) allow the part to automatically operate from the most efficient supply.

Resources

DC2242A - Schematic
7/27/2015

DC2242A - Demo Manual
7/27/2015

DC2242A - Design Files
7/27/2015

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