LTC1702A

PRODUCTION

Dual 550kHz Synchronous 2-Phase Switching Regulator Controller

Part Models: 4
1ku List Price: Starting From $6.28

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Overview

Pin Compatible with the LTC1702 with Improved Current Limit Control
Two Sides Run Out-of-Phase to Minimize C_IN
No External Current Sense Resistors
Excellent Output Regulation: 1% Total Output Accuracy
Two Independent Controllers in One Package
All N-Channel External MOSFET Architecture
550kHz Switching Frequency Minimizes External Component Size
1A to 25A Output Current per Channel
High Efficiency over Wide Load Current Range
Less Than 100µA Shutdown Current
Small 24-Pin Narrow SSOP Package

The LTC1702A is a dual switching regulator controller optimized for high efficiency with low input voltages. It includes two complete, on-chip,independent switching regulator controllers each designed to drive a pair of external N-channel MOSFETs in a voltage mode feedback,synchronous buck configuration. The LTC1702A uses a constant-frequency, true PWM design switching at 550kHz, minimizing external component size and cost and maximizing load transient performance. The synchronous buck architecture automatically shifts to discontinuous and then to Burst Mode^® operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.

The LTC1702A features an onboard reference trimmed to 0.5% and can provide better than 1% regulation at the converter outputs. Open-drain logic outputs indicate whether either output has risen to within 5% of the final output voltage and an optional latching FAULT mode protects the load if the output rises 15% above the intended voltage. Each channel can be enabled independently; with both channels disabled, the LTC1702A shuts down and supply current drops below 100µA.

Applications

Microprocessor, DSP Core and I/O Supplies
Multiple Logic Supply Generator
Distributed Power Applications
High Efficiency Power Conversion

Part Models: 4
1ku List Price: Starting From $6.28

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
LTC1702ACGN#PBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1702ACGN#TRPBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1702AIGN#PBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1702AIGN#TRPBF	24-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC1702ACGN#PBF	PRODUCTION
LTC1702ACGN#TRPBF	PRODUCTION
LTC1702AIGN#PBF	PRODUCTION
LTC1702AIGN#TRPBF	PRODUCTION
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL
		PCN22_0177_Form Material_Report Delta Qualification Matrix
LTC1702ACGN#PBF	PRODUCTION
LTC1702ACGN#TRPBF	PRODUCTION
LTC1702AIGN#PBF	PRODUCTION
LTC1702AIGN#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
Power System Management (PSM) & Sequencers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Switching Regulators & Controllers 1
LTC3880	RECOMMENDED FOR NEW DESIGNS	Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Tools & Simulations

LTspice 1

LTC1702A Demo Circuit - 550kHz Synchronous Buck Converter (5V to 1.8V @ 15A)

Models for the following parts are available in LTspice:

LTC1702
LTC1702A

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.