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LTC3544BEUD#PBF - 

DC/DC Switching Regulator, Buck, 4 Output, 2.25 V to 5.5 V in, 5.5 V/300 mA out, 2.7 MHz, QFN-16

LTC3544BEUD#PBF - DC/DC Switching Regulator, Buck, 4 Output, 2.25 V to 5.5 V in, 5.5 V/300 mA out, 2.7 MHz, QFN-16
LTC3544BEUD#PBF - DC/DC Switching Regulator, Buck, 4 Output, 2.25 V to 5.5 V in, 5.5 V/300 mA out, 2.7 MHz, QFN-16

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

Manufacturer Part No:
LTC3544BEUD#PBF
Order Code:
2295071
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The LTC3544BEUD#PBF is a monolithic synchronous Buck Regulator uses a constant frequency, current mode architecture. The four regulators operate independently with separate run pins. The 2.25 to 5.5V input voltage range makes the LTC3544B well suited for single Li-ion/polymer battery-powered applications. 100% duty cycle provides low dropout operation, extending battery runtime in portable systems. At moderate and low output load levels PWM pulse skip mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set to 2.25MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported with the 0.8V feedback reference voltage.
  • Up to 95% high efficiency
  • No Schottky diodes required
  • Pulse skipping at low load for minimum ripple
  • Shutdown mode draws <1µA supply current
  • Current mode operation for excellent line and load transient response
  • Overtemperature protected
  • 100% Duty cycle low dropout operation

Applications

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

Product Information

:
2.25V
:
5.5V
:
4 Output
:
QFN
:
16Pins
:
300mA
:
200mA
:
5.5V
:
5.5V
:
Adjustable
:
2.7MHz
:
Synchronous Buck (Step Down)
:
85°C
:
Cut Tape
:
-
:
MSL 1 - Unlimited
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