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LINEAR TECHNOLOGY  LTC1149CN#PBF  DC-DC Switching Buck Step Down Regulator, Adjustable, 12V-48V in, 10mA out, 250kHz, DIP-16

LINEAR TECHNOLOGY LTC1149CN#PBF
Manufacturer Part No:
LTC1149CN#PBF
Order Code:
1136640
Technical Datasheet:
See all Technical Docs

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

Product Overview

The LTC1149CN#PBF is a synchronous step-down switching Regulator Controller features automatic Burst Mode® operation to maintain high efficiencies at low output currents. This device drive external complementary power MOSFETs at switching frequencies up to 250kHz using a constant OFF-time current-mode architecture. Special onboard regulation and level-shift circuitry allow operation at input voltage from dropout to 48V (60V absolute maximum). The constant OFF-time architecture maintains constant ripple current in the inductor, easing the design of wide input range converters. Current-mode operation provides excellent line and load transient response. The operating current level is user-programmable via an external current sense resistor. The LTC1149 series incorporates automatic power saving Burst Mode® operation when load currents drop below the level required for continuous operation. Standby power is reduced to only about 8mW at VIN=12V. In shutdown, both MOSFETs are turned off.
  • Up to 95% ultrahigh efficiency
  • Current-mode operation for excellent line and load transient response
  • High efficiency maintained over wide current range
  • Logic-controlled micropower shutdown
  • Short-circuit protection
  • 100% Duty cycle very low dropout operation
  • Synchronous FET switching for high efficiency
  • Adaptive non-overlap gate drives

Product Information

Topology:
Buck (Step Down)
Input Voltage Min:
12V
Input Voltage Max:
48V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
DIP
No. of Pins:
16Pins
Output Current:
10mA
Output Voltage Min:
-
Output Voltage Max:
-
Switching Frequency:
250kHz
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
-
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Computers & Computer Peripherals
  • Portable Devices
  • Power Management
  • Avionics
  • Communications & Networking

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):
.000001

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