LTC3529

RECOMMENDED FOR NEW DESIGNS

1.5A, 1.5MHz Step-Up DC/DC Converter in 2mm × 3mm DFN

Part Models: 2
1ku List Price: Starting From $2.47

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Overview

Compact Solution for 5V USB On-The-Go V_BUS Power
5V at 500mA from Single Li-Ion Cell
Automatic Fault Detection
High Efficiency: Up to 95%
V_IN Range: 1.8V to 5.25V
Fixed 5V Output
Short Circuit Protection
1.5MHz Low Noise, Fixed Frequency PWM
Inrush Current Limiting and Internal Soft-Start
Output Disconnect
<1μA Quiescent Current in Shutdown
V_IN > V_OUT Operation
8-Lead, 2mm × 3mm DFN Package

The LTC3529 is a 5V output, synchronous, fixed frequency step-up DC/DC converter optimized for USB On-The-Go (OTG) hosting applications. This compact USB OTG 5V V_BUS converter features a 1.5MHz switching frequency, internal compensation and a tiny 2mm × 3mm DFN package. The LTC3529 can operate from input voltages as low as 1.8V.

USB OTG-specific features include a fault fl ag with 22ms deglitching to indicate when the bus is overloaded, output disconnect and short circuit protection. Following a fault, the LTC3529 can be programmed to either latch-off or restart after a time-out duration.

Additional features include a <1μA shutdown mode, soft-start, inrush current limiting and thermal overload protection. Anti-ring circuitry reduces EMI during low power operation. The LTC3529 is offered in an 8-Lead 2mm × 3mm × 0.75mm DFN package.

Applications

Personal Media Players
Digital Video Cameras
Digital Multimedia Broadcast Tuners
Digital Cameras
Smart Phones

Part Models: 2
1ku List Price: Starting From $2.47

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
LTC3529EDCB#TRMPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3529EDCB#TRPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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
Protection Switches & Controllers 2
LTC4361-1 LTC4361-2		Overvoltage/Overcurrent Protection Controller
LTC4417	RECOMMENDED FOR NEW DESIGNS	Prioritized PowerPath^™ Controller

Tools & Simulations

LTspice 1

LTC3529 Demo Circuit - 1.5A, 1.5MHz Step-Up DC/DC Converter (1.8-5V to 5V @ 500mA)

Models for the following parts are available in LTspice:

LTC3529

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.