DC-DC Switching Buck-Boost Regulator, Adjustable, 2.5V-5.5Vin, 2.5V-5.5Vout, 0.6Aout, MSOP-10

LTC3440EMS#PBF - DC-DC Switching Buck-Boost Regulator, Adjustable, 2.5V-5.5Vin, 2.5V-5.5Vout, 0.6Aout, MSOP-10

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Product Overview

The LTC3440EMS#PBF is a micropower synchronous buck-boost DC/DC Converter 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 single lithium-ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range. The device includes two 0.19R N-channel MOSFET switches and two 0.22R P-channel switches. Switching frequencies up to 2MHz are programmed with an external resistor and the oscillator can be synchronized to an external clock. 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 MODE/SYNC pin high. If the MODE/SYNC pin has either a clock or is driven low, then fixed frequency switching is enabled.
  • Single inductor
  • Fixed frequency operation with battery voltages above, below or equal to the output
  • Synchronous rectification up to 96% efficiency
  • 25µA Quiescent current in Burst Mode® operation
  • Up to 600mA continuous output current
  • No Schottky diodes required (VOUT < 4.3V)
  • VOUT disconnected from VIN during shutdown
  • Programmable oscillator frequency from 300kHz to 2MHz
  • Synchronizable oscillator
  • Burst Mode® enable control
  • <1µA Shutdown current


Computers & Computer Peripherals, Portable Devices, Multimedia, Consumer Electronics, Imaging, Video & Vision

Product Information

Synchronous Buck-Boost
Cut Tape
MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Associated Products

Related Searches


29 In stock

29 in stock for next day delivery (UK stock)

see cut-off times
Check stock and lead times
More stock available week commencing 29/10/18
£4.99 £ 4.99
Price for:
Multiple: 1 Minimum: 1
Quantity Price
1 + £4.99
25 + £3.00
100 + £2.37
No longer stocked:: No Longer Manufactured::
Add to Basket
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.