LTC3402
PRODUCTION2A, 3MHz Micropower Synchronous Boost Converter
- Part Models
- 2
- 1ku List Price
- Starting From $5.55
Overview
- Synchronous Rectification: Up to 97% Efficiency
- 2A Switch Current Rating
- Fixed Frequency Operation Up to 3MHz
- Wide Input Range: 0.5V to 5V
- Very Low Quiescent Current: 38µA (Burst Mode® Operation)
- 2.6V to 5V Adjustable Output Voltage
- 0.85V (Typ) Start-Up Voltage
- No External Schottky Diode Required (VOUT < 4.3V)
- Synchronizable Switching Frequency
- Burst Mode Enable Control
- Antiringing Control Reduces Switching Noise
- PGOOD Output
- OPTI-LOOP® Compensation
- Very Low Shutdown Current: <1µA
- Small 10-Pin MSOP Package
The LTC3402 is a high efficiency, fixed frequency, step-up DC/DC converter that operates from an input voltage below 1V. The device includes a 0.16Ω N-channel MOSFET switch and a 0.18Ω P-channel synchronous rectifier. Switching frequencies up to 3MHz are programmed with an external timing resistor and the oscillator can be synchronized to an external clock. An external Schottky diode is optional but will slightly improve efficiency.
Quiescent current is only 38µA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the MODE/SYNC pin high. If the MODE/SYNC pin has either a clock or is driven low, then fixed frequency switching is enabled.
Other features include a 1µA shutdown, antiringing control, open-drain power good output, thermal shutdown and current limit. The LTC3402 is available in the 10-lead thermally enhanced MSOP package. Lower current applications should use the 1A rated LTC3401 synchronous boost converter. Applications that require VOUT < 2.6V should use the LTC3424.
Applications
- Cellular Telephones
- Handheld Computers
- MP3 Players
- 2-Way Pagers
- GPS Receivers
- Battery Backup Supplies
- CCFL Backlights
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 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 |
|---|---|---|---|
| LTC3402EMS#PBF | 10-Lead MSOP | ||
| LTC3402EMS#TRPBF | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3402EMS#PBF | PRODUCTION | |
| LTC3402EMS#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 |
|---|---|---|
| Switching Regulators & Controllers 1 | ||
|
LTC3539 LTC3539-2 |
2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters | |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3402
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
LTC3402EMS | Synchronous Boost Converter, VIN=1 to 4.5V, VOUT=3.3V or 5V