LTC3423
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LTC3423

Low Output Voltage, 3MHz Micropower Synchronous Boost Converters

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.41
Features
  • 1.5V to 5.5V Adjustable Output Voltage
  • Synchronous Rectification: Up to 95% Efficiency
  • 1A Switch Current (LTC3423) or
    2A Switch Current (LTC3424)
  • Fixed Frequency Operation Up to 3MHz
  • Wide Input Range: 0.5V to 5.5V (Operating)
  • Very Low Quiescent Current: 38µA (Burst Mode® Operation)
  • No External Schottky Diode Required
  • Synchronizable Switching Frequency
  • Burst Mode Enable Control
  • OPTI-LOOP® Compensation
  • Very Low Shutdown Current: <1µA
  • Small 10-Pin MSOP Package
Additional Details
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The LTC3423 and LTC3424 are high efficiency, fixed frequency, step-up DC/DC converters that can regulate output voltages as low as 1.5V from a single cell. An applied voltage of at least 2.7V to the VDD pin is required to power the internal control circuitry.

The devices include a 0.16Ω N-channel MOSFET switch and a 0.21Ω P-channel synchronous rectifier. The LTC3423 is intended for applications requiring less than 0.75W of output power and the LTC3424 for 1.5W or less. Switching frequencies up to 3MHz are programmed with an external timing resistor and the oscillator can be synchronized to an external clock.

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 the operation is at constant fixed frequency.

Other features include a 1µA shutdown, thermal shutdown and current limit. The LTC3423 and LTC3424 are available in the 10-lead MSOP package. For applications requiring an output voltage greater than 2.6V, the LTC3401 and LTC3402 are recommended without the need of a separate voltage for the VDD pin.

Applications

  • Pagers
  • Handheld Instruments
  • Cordless Phones
  • Wireless Handsets
  • GPS Receivers
  • Battery Backup
Part Models 2
1ku List Price Starting From $3.41

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3423EMS#PBF
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LTC3423EMS#TRPBF
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Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3423EMS#PBF

PRODUCTION

LTC3423EMS#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3423EMS#PBF

PRODUCTION

LTC3423EMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC516A-A

LTC3423EMS Demo Board | 1V ≤ VIN ≤ 1.6V, VOUT = 1.8V @ 350mA

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DC516A-A

LTC3423EMS Demo Board | 1V ≤ VIN ≤ 1.6V, VOUT = 1.8V @ 350mA

LTC3423EMS Demo Board | 1V ≤ VIN ≤ 1.6V, VOUT = 1.8V @ 350mA

Product Detail

Demonstration circuit 516A-A is a low output voltage, synchronous boost converter featuring the LTC3423. The LTC3423 is ideal for applications that require an output voltage between 1.5V to 2.6V from a single alkaline or NiCd/NiMH cell. A bias voltage (VDD) of 2.7V to 5.5V is required to power the internal circuitry. The input voltage (VIN) range is 1V to 1.6V, but once up and running, the device can operate with an input voltage as low as 0.5V. The output voltage is set at 1.8V. For a 1V minimum battery voltage, the LTC3423 can provide 350mA.

Tools & Simulations

Tools & Simulations 1

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.

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