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LTC3402 Datasheet

LTC3402 Datasheet

2A, 3MHz Micropower Synchronous Boost Converter
Part No.: LTC3402
Page: 16 Pages
Size: 213 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-11-03 16:18:03
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LTC3402 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC3402EMS#PBF Tube 50 LTSK 1 10 -40°C ~ 125°C 10-Lead MSOP  
LTC3402EMS#TRPBF Reel 2500 LTSK 1 10 -40°C ~ 125°C 10-Lead MSOP  
LTC3402EMS#TRMPBF Reel 500 LTSK 1 10 -40°C ~ 125°C 10-Lead MSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC3402 Datasheet(PDF)

LTC3402 Datasheet(Picture)

LTC3402 Features

  • 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

LTC3402 Applications

  • Cellular Telephones
  • Handheld Computers
  • MP3 Players
  • 2-Way Pagers
  • GPS Receivers
  • Battery Backup Supplies
  • CCFL Backlights

LTC3402 Description

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.

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