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LINEAR TECHNOLOGY  LT3952HFE#PBF  Led Driver, 1 Output, Boost (Step Up), 3V-42V in, 3MHz switch, 60V/4A out, TSSOP-28

LINEAR TECHNOLOGY LT3952HFE#PBF
Manufacturer Part No:
LT3952HFE#PBF
Order Code:
2483274
Technical Datasheet:
See all Technical Docs

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

Product Overview

The LT3952HFE#PBF is a current mode step-up DC/DC Converter with an internal 60V 80mR DMOS power switch. The LT3952 is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage source. Programmable switching frequency with optional spread-spectrum modulation provides EMI reduction, while still allowing optimization of the external components for efficiency or component size. The LED current is programmable with an external sense resistor and can be adjusted from zero to full scale with a voltage at the CTRL pin. The external PWM input provides LED ON/OFF control and 4000:1 dimming ratio and an internal PWM generator delivers the efficiency of PWM dimming to standalone or I/O limited applications.
  • 0 to 60V Output current regulation with monitor
  • PMOS switch driver for PWM and output disconnect
  • LED short-circuit protection and SHORTLED\ flag
  • Internal spread spectrum frequency modulation
  • Constant-current and constant-voltage regulation
  • Input current limit and monitor
  • Programmable open-LED protection with OPENLED\ flag
  • Programmable VIN under-voltage and over-voltage lockout

Product Information

Device Topology:
Boost (Step Up)
No. of Outputs:
1Outputs
Output Current:
4A
Output Voltage:
60V
Driver Case Style:
TSSOP
No. of Pins:
28Pins
Input Voltage Min:
3V
Input Voltage Max:
42V
Switching Frequency:
3MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
150°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • LED Lighting
  • Automotive
  • Avionics
  • Power Management

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):
.000426

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