LTC3805EMSE-5#PBF - 

DC/DC Controller, Current Mode, 8.8V to 75V, 1 Output, Boost, Flyback, SEPIC, 700kHz, MSOP-10

LTC3805EMSE-5#PBF - DC/DC Controller, Current Mode, 8.8V to 75V, 1 Output, Boost, Flyback, SEPIC, 700kHz, MSOP-10

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

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Product Overview

The LTC3805EMSE-5#PBF is a current-mode DC/DC Controller designed to drive an N-channel MOSFET in flyback, boost and SEPIC converter applications. Operating frequency and slope compensation can be programmed by external resistors. Programmable overcurrent sensing protects the converter from overload and short-circuit conditions. Soft-start can be programmed using an external capacitor and the soft-start capacitor also programs an automatic restart feature. It provides ±1.5% output voltage accuracy and consumes only 360µA of quiescent current during normal operation and only 40µA during micropower startup. Using a 9.5V internal shunt regulator, it can be powered from a high VIN through a resistor or it can be powered directly from a low impedance DC voltage from 4.7 to 8.8V.
  • VIN and VOUT Limited only by external components
  • 4.5V Undervoltage lockout threshold
  • Adjustable slope compensation
  • Adjustable overcurrent protection with automatic restart
  • Synchronizable to an external clock
  • ±1.5% Reference accuracy
  • Only 100mV Current sense voltage drop
  • RUN pin with precision threshold and adjustable hysteresis
  • Programmable soft-start with one external capacitor
  • 360µA Low quiescent current


Automotive, Power Management, Communications & Networking, Industrial

Product Information

1 Output
Boost, Flyback, SEPIC
Cut Tape
MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Associated Products

Compare Selected

Related Searches


27 In stock

27 in stock for next day delivery (UK stock)

see cut-off times
Check stock and lead times
More stock available week commencing 04/02/19
£2.25 £ 2.25
Price for:
Multiple: 1 Minimum: 1
Quantity Price
1 + £2.25
10 + £1.99
25 + £1.43
50 + £1.39
100 + £1.35
250 + £1.32
500 + £1.28
1000 + £1.24
No longer stocked:: No Longer Manufactured::
Add to Basket
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.