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LINEAR TECHNOLOGY  LTC1871EMS#PBF  DC/DC Controller, Current Mode, 2.5V to 36V, 1 Output, Boost, Flyback, SEPIC, 1MHz, MSOP-10

LINEAR TECHNOLOGY LTC1871EMS#PBF
Technical Data Sheet (521.57KB) EN See all Technical Docs

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

Product Overview

The LTC1871EMS#PBF is a wide input range, no RSENSE™ current mode boost, flyback and SEPIC Controller that drives an N-channel power MOSFET and requires very few external components. Intended for low to medium power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET's on-resistance, thereby maximizing efficiency. This ICs operating frequency can be set with an external resistor over a 50kHz to 1MHz range and can be synchronized to an external clock using the MODE/SYNC pin. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10μA make this ideally suited for battery-operated systems.
  • High efficiency (no sense resistor required)
  • Current mode control provides excellent transient response
  • High maximum duty cycle (92% typical)
  • ±2% Run pin threshold with 100mv hysteresis
  • ±1% Internal voltage reference
  • 10μA IQ micropower shutdown
  • Programmable operating frequency (50kHz to 1MHz) with one external resistor
  • User-controlled pulse skip or burst Mode® operation
  • Internal 5.2V low dropout voltage regulator
  • Output overvoltage protection

 

Product Information

Supply Voltage Min:
2.5V
Supply Voltage Max:
36V
No. of Outputs:
No. of Outputs:
1 Output
Duty Cycle (%):
97%
Controller IC Case Style:
MSOP
No. of Pins:
10Pins
Switching Frequency:
1MHz
Topology:
Boost, Flyback, SEPIC
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualifications Standard:
-
MSL:
MSL 1 - Unlimited
Supply Voltage Range:
2.5V to 36V
Output Current:
50 mA
SVHC:
No SVHC (17-Dec-2015)
Output Voltage:
12 V

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Applications

  • Power Management;
  • Portable Devices

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Product Traceability
RoHS Compliant:
Yes
Authorized Distributor

Substitutes