DC/DC Switching Regulator, Synchronous, Dual, 2.5 V to 5.5 V in, 5.5 V/0.3A out, 2.7 MHz, DFN-8

LTC3547EDDB#TRMPBF - DC/DC Switching Regulator, Synchronous, Dual, 2.5 V to 5.5 V in, 5.5 V/0.3A out, 2.7 MHz, DFN-8

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Product Overview

The LTC3547EDDB#TRMPBF is a step-down DC/DC Converter with 100% duty cycle provides low dropout operation, extending battery life in portable systems. Low output voltages are supported with the 0.6V feedback reference voltage. Each regulator can supply 300mA continuous output current. The input voltage range is 2.5 to 5.5V, making it ideal for Li-ion and USB powered applications. Supply current during operation is only 40µA and drops to <1µA in shutdown. Automatic Burst Mode® operation increases efficiency at light loads, further extending battery life. An internally set 2.25MHz switching frequency allows the use of tiny surface mount inductors and capacitors. Internal soft-start reduces inrush current during startup. All outputs are internally compensated to work with ceramic capacitors. The LTC3547 is also available in a fixed output voltage configuration, eliminating the need for the external feedback networks.
  • Internally compensated for all ceramic capacitors
  • Independent internal soft-start for each channel
  • Current mode operation for excellent line and load transient response
  • Short-circuit protected
  • <1µA Ultralow shutdown current


Wireless, Portable Devices, Consumer Electronics, Audio, Communications & Networking, Power Management

Product Information

2 Output
Synchronous Buck (Step Down)
Cut Tape
MSL 1 - Unlimited
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