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DC/DC converters

Linear Technology offers LT8616 switching regulator suitable for always-on systems

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By Linear Technology now part of Analog Devices on 13th May 201516th December 2015

Product Details Supplier Info More products

Download document:

LT8616 backgrounder - .PDF file.

Download document:

LT8616 presentation - .PPT file.

Linear Technology has introduced the LT8616, a 42V-input-capable, high-efficiency dual synchronous monolithic step-down switching regulator. Its dual-channel design delivers independent 2.5A and 1.5A continuous current to outputs as low as 0.8V.

A dual-channel synchronous rectification topology delivers up to 95 per cent efficiency, while Burst Mode operation keeps quiescent current under 6.5µA (both channels enabled) in no-load standby conditions, making it suitable for always-on systems. Switching frequency can be programmed from 200kHz to 3MHz and is synchronisable throughout this range.

The LT8616’s 35nsec minimum on-time enables 16V_IN to 1.8V_OUT step-down conversions, while switching at 2MHz helps designers avoid critical noise-sensitive frequency bands, such as AM radio, while having a very compact solution footprint. Its 3.4V to 42V input voltage range makes it suitable for automotive applications that must regulate through cold-crank and stop-start scenarios with minimum input voltages as low as 3.4V and load-dump transients in excess of 40V.

Each channel of the LT8616 maintains a minimum dropout voltage of only 400mV (at1A) under all conditions, enabling it to excel in scenarios such as automotive cold-crank. The LT8616’s 28-lead thermally enhanced TSSOP package and high switching frequency keeps external inductors and capacitors small, providing a compact, thermally efficient footprint.

Click on the link above to download the data sheet. There is also a presentation available for download.

Key features and specifications

Wide input voltage range: 3.4V to 42V
2.5A and 1.5A buck regulators with separate inputs
Fast minimum switch on-time: 35nsec
Ultra-low quiescent current Burst Mode operation:
- 6.5μA I_Q regulating 12V_IN to 5V_OUT and 3.3V_OUT
- Output ripple less than 15mV
180° out-of-phase switching
Adjustable and synchronisable: 200kHz to 3MHz
Accurate 1V enable pin thresholds
Internal compensation
Output soft-start and tracking
TSSOP package: output stays at or below regulation voltage during adjacent pin short or when a pin is left floating
Thermally enhanced 28-lead TSSOP package

External link:

More information

Linear Technology now part of Analog Devices

Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges.

Contact Supplier Visit our website 01628 477066

About Analog Devices
Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges. We enable our customers to interpret the world around us by intelligently bridging the physical and digital with unmatched technologies that sense, measure, power, connect and interpret. Visit http://www.analog.com

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