IC manufacturers Texas Instruments

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Texas Instruments LM5175 | Demoboard PMP10592

LED PWM Dimming Reference Design Using High Efficiency Buck-Boost Converter

Overview

TopologyBuck-Boost Converter
Input voltage4.5-42 V
Output 11.1 A
IC revisionA

Description

The reference design contains a complete LM5175 based buck-boost converter and a driver and FET for PWM dimming. This design has been optimized for the 12-V automotive supply rail with support for cold-crank profile based on ISO 7637-2 pulse 4. The design provides 1.1-A constant current output to a string of 8 LEDs.

Features

  • Wide VIN 4.5V-42V
  • Drive 8 LEDs in series
  • 1-A constant current loop
  • PWM dimming driver/fet
  • 0-100% PWM dimming range
  • Meets ISO 7637-2 Pulse 4 (cold-crank)

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples
74435571500SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 15 14.1 10.75 14 9 14 MnZn
Order Code Data­sheet Simu­lation
74435571500SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples