Low

LINEAR TECHNOLOGY  LTC3549EDCB#TRMPBF  DC-DC Switching Buck Step Down Regulator, Adjustable, 1.6V-5.5Vin, 611mV-5.5Vout, 250mAout, DFN-6

LINEAR TECHNOLOGY LTC3549EDCB#TRMPBF
Manufacturer Part No:
LTC3549EDCB#TRMPBF
Order Code:
1715241RL
Technical Datasheet:
See all Technical Docs

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

Product Overview

The LTC3549EDCB#TRMPBF is a high-efficiency monolithic synchronous Buck Regulator using a constant-frequency and current-mode architecture. The output voltage is adjusted via an external resistor divider. A fixed switching frequency of 2.25MHz is supported. This switching frequency allows the use of small surface mount inductors and capacitors, including ceramics. Supply current during Burst Mode® operation is only 50µA dropping to <1µA in shutdown. The 1.6 to 5.5V input voltage range makes the LTC3549 ideally suited for single cell Li-ion, li-metal and 2-cell alkaline, NiCd or NiMH battery-powered applications. 100% duty cycle capability provides low dropout operation, extending battery life in portable systems. Burst Mode® operation can be user-enabled, increasing efficiency at light loads, further extending battery life. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode.
  • Internal soft-start
  • No Schottky diode required
  • Stable with ceramic capacitors
  • Current-mode operation for excellent line and load transient response
  • Over-temperature protection
  • Up to 93% high efficiency
  • 450mA Peak inductor current
  • 0.611V Reference voltage

Product Information

Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
1.6V
Input Voltage Max:
5.5V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
DFN
No. of Pins:
6Pins
Output Current:
250mA
Output Voltage Min:
611mV
Output Voltage Max:
5.5V
Switching Frequency:
2.7MHz
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

Find similar products  grouped by common attribute

Applications

  • Power Management;
  • Consumer Electronics;
  • Portable Devices

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