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

LINEAR TECHNOLOGY LTC3440EMS#PBF
Technical Data Sheet (325.96KB) EN See all Technical Docs

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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

Product Information

Input Voltage Min:
2.5V
Input Voltage Max:
5.5V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
MSOP
No. of Pins:
10Pins
Output Current:
600mA
Output Voltage Min:
2.5V
Output Voltage Max:
5.5V
Switching Frequency:
2MHz
Topology:
Synchronous Buck-Boost
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

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

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.0001

Associated Products