Low

LINEAR TECHNOLOGY  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

LINEAR TECHNOLOGY LTC3544BEUD#PBF
LINEAR TECHNOLOGY LTC3544BEUD#PBF
Manufacturer Part No:
LTC3544BEUD#PBF
Order Code:
2295071
Technical Datasheet:
See all Technical Docs
LINEAR TECHNOLOGY LTC3544BEUD#PBF
LINEAR TECHNOLOGY LTC3544BEUD#PBF

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

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

Product Information

Input Voltage Min:
2.25V
Input Voltage Max:
5.5V
No. of Outputs:
4 Output
DC / DC Converter IC Case:
QFN
No. of Pins:
16Pins
Output Current - Output 1:
300mA
Output Current - Output 2:
200mA
Output Voltage - Output 1:
5.5V
Output Voltage - Output 2:
5.5V
Regulator Output Type:
Adjustable
Switching Frequency:
2.7MHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

Find similar products  grouped by common attribute

Applications

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

Legislation and Environmental

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