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Analog Devices DC2342A LT3762 60V Synchronous Boost LED Controller Demo Manual

LT3762 60V synchronous boost LED controller demo board driving 32V/2A LED strings. Features SSFM, internal/external PWM dimming, and high efficiency for power step-up applications.

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Overview

Demonstration circuit DC2342A evaluates the LT3762, a 60V synchronous boost LED controller designed for high-power applications. The circuit drives a single LED string at 2A with a forward voltage up to 32V from a 7V to 28V input, and remains operational down to 4V with reduced output current. It operates at 300kHz and features Spread Spectrum Frequency Modulation (SSFM) to minimize EMI. The design supports multiple dimming options including analog, external PWM, and internally generated PWM dimming. It provides protection against open and short LED conditions with dedicated fault flags and achieves efficiency up to 94.7%.

Use Cases

  • High power step-up LED lighting
  • Automotive LED headlamps
  • Industrial lighting systems
  • EMI-sensitive LED driver applications

Topics

LT3762
DC2342A
Synchronous Boost
LED Controller
Spread Spectrum Frequency Modulation
SSFM
PWM Dimming
Analog Dimming
EMI Reduction
High Efficiency
Analog Devices

Referenced Parts

PMEG4020EP

Nexperia

DIODE, OPTION, SOD-128 (referenced in schematic)

575-4

KEYSTONE

JACK, BANANA

LT3762EUFD#PBF

Linear Technology

I.C., LED CONTROLLER, 28QFN-4X5

50CE100BS

SUN ELEC.

CAP., ALUM., 100μF, 50V, 20%

RL3264R-R120-F

SUSUMU

RES., SENSE, 0.120Ω, 1W, 1%, 2512

62000421121

Wurth Elektronik

HEADER 2X2 0.079" DOUBLE ROW

62000621121

Wurth Elektronik

HEADER 2X3 0.079" DOUBLE ROW

CIN4

Wurth Elektronik

10uH | 74435561100 | Wurth Elektronik | CIN4 | 10uF

PG-TDSON-8

Infineon

9 2 M1, M2 N-MOSFET, PG-TDSON-8 INFINEON, BSC019N04LS

POWERPAK-1212-8-S

Vishay

10 1 M5 P-MOSFET, POWERPAK-1212-8-S VISHAY, SIS443DN-T1-GE3

18.30mm

Wurth Elektronik

7 1 L1 IND., 10μH, 18.30mm WURTH ELEKTRONIK, 74435561100

5.0mm

Wurth Elektronik

8 1 L2 IND., 47μH, 5.0mm WURTH ELEKTRONIK, 74408942470

Analog Devices DC2342A LT3762 60V Synchronous Boost LED Controller Demo Manual | Design Resources