LTC3534
RECOMMENDED FOR NEW DESIGNS7V, 500mA Synchronous Buck-Boost DC/DC Converter
- Part Models
- 4
- 1ku List Price
- Starting From $4.79
Overview
- Regulated Output with Input Voltages Above, Below or Equal to the Output
- 2.4V to 7V VIN and 1.8V to 7V VOUT Ranges
- 5V VOUT at 500mA from 4 AA Cells
- Single Inductor
- Synchronous Rectification: Up to 94% Efficiency
- Burst Mode® Operation with 25μA IQ
- Output Disconnect in Shutdown
- 1MHz Switching Frequency
- <1μA Shutdown Current
- Small Thermally Enhanced 16-Lead (5mm × 3mm × 0.75mm) DFN and 16-Lead GN Packages
The LTC3534 is a wide VIN range, highly efficient, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for multi-cell Alkaline/NiMH or single Lithium-Ion/Polymer applications where the output voltage is within the battery voltage range.
The LTC3534 offers extended VIN and VOUT ranges of 2.4V to 7V and 1.8V to 7V, respectively. Quiescent current is only 25μA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the PWM pin low. If the PWM pin is driven high then fixed frequency switching is enabled.
Other features include fixed 1MHz operating frequency, a <1μA shutdown, short-circuit protection, programmable soft-start, current limit and thermal overload protection. The LTC3534 is available in the thermally enhanced 16-lead (3mm × 5mm) DFN and 16-lead GN packages.
Applications
- Medical Instruments
- Portable Barcode Readers
- Portable Inventory Terminals
- USB to 5V Supply
- Handheld GPS
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 1
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 |
|---|---|---|---|
| LTC3534EDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3534EDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3534EGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3534EGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3534EDHC#PBF | PRODUCTION | |
| LTC3534EDHC#TRPBF | PRODUCTION | |
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC3534EGN#PBF | PRODUCTION | |
| LTC3534EGN#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LTC3534EGN#PBF | PRODUCTION | |
| LTC3534EGN#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Ideal Diodes and PowerPath Controllers 1 | ||
| LTC4417 | RECOMMENDED FOR NEW DESIGNS | Prioritized PowerPath™ Controller |
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4365 | RECOMMENDED FOR NEW DESIGNS | Overvoltage, Undervoltage and Reverse Supply Protection Controller |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2935 | PRODUCTION | Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3534
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
LTC3534EDHC Demo Board | 5V, 500mA Synchronous Buck-Boost DC/DC Converter