Low

LT3956EUHE#PBF - 

DC-DC Switching Regulator, Adjustable, 4.5V-80V in, 80V/3.3A out, 1MHz, QFN-36

LINEAR TECHNOLOGY LT3956EUHE#PBF

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

Manufacturer Part No:
LT3956EUHE#PBF
Order Code:
2115926
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The LT3956EUHE#PBF is a Constant-Current Constant-Voltage DC/DC Converter ideally suited for driving high current LEDs. It features an internal low side N-channel power MOSFET rated for 84V at 3.3A and driven from an internal regulated 7.15V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. A ground referenced voltage FB pin serves as the input for several LED protection features and also makes it possible for the converter to operate as a constant-voltage source. A frequency adjust pin allows the user to program the frequency from 100kHz to 1MHz to optimize efficiency, performance or external component size. High side current sensing is the most flexible scheme for driving LEDs, allowing boost, buck mode or buck-boost mode configuration. The PWM input provides LED dimming ratios of up to 3000:1 and the CTRL input provides additional analogue dimming capability.
  • 3000:1 True colour PWM™ dimming
  • Internal 3.3A/84V switch
  • Constant-current and constant-voltage regulation
  • 250mV High side current sense
  • Drives LEDs in boost, buck mode, buck-boost mode, SEPIC or Flyback topology
  • 100kHz to 1MHz Adjustable frequency
  • Open LED protection
  • Programmable under-voltage lockout with hysteresis
  • Constant-voltage loop status pin
  • PWM disconnect switch driver
  • CTRL pin adjusts high side current sense threshold
  • Low shutdown current (<1µA)
  • Programmable soft-start

Applications

LED Lighting, Power Management

Product Information

:
-
:
4.5V
:
80V
:
1Outputs
:
QFN
:
36Pins
:
3.3A
:
-
:
80V
:
1MHz
:
125°C
:
Each
:
-
:
-
:
MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Associated Products

Compare Selected

183 In stock

121 in stock for next day delivery (Liege stock)

62 in stock for next day delivery (UK stock)

see cut-off times
 
Check stock and lead times

183 will be available for delivery on 13-Aug-2017

More stock available week commencing 30/10/17
£6.56 £ 6.56
Price for:
Each
Multiple: 1 Minimum: 1
Quantity Price
1 + £6.56
25 + £4.02
100 + £3.46
No longer stocked:: No Longer Manufactured::
Add to Basket
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews

Community

Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.

Filters:

Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.