LT3950

26

Rev. 0

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10/20

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RELATED PARTS

TYPICAL APPLICATION

PART NUMBER DESCRIPTION

COMMENTS

LT3517

Full-Featured LED Driver with 1.5A Switch

Current

1.5A, 45V Internal Switch, 5000:1 True Color PWM Dimming, 100mV High-Side Current

Sense, Open LED Protection

LT3518

Full-Featured LED Driver with 2.3A Switch

Current

2.3A, 45V Internal Switch, 3000:1 True Color PWM Dimming, 100mV High-Side Current

Sense, Open LED Protection

LT3922

36V, 2A Synchronous Step-Up LED Driver

±2% Current Regulation Accuracy, 5000:1 PWM Dimming, 128:1 Internal PWM,

LT3761

Generator

4.5V to 60V Input, Rail-to-Rail Current Sense 0V to 80V, 3000:1 True Color PWM, ±3%

Current Regulation Accuracy

LT3952

60V LED Driver with 4A Switch Current

4A, 60V Internal DMOS Switch, 4000:1 True Color PWM Dimming, 0V to 60V Output

Current Regulation with Monitor

LT3477

3A DC/DC Converter with Dual Rail-to-Rail

Current Sense

Dual 100mV Rail-to-Rail Current Sense Amplifiers, 2.5V to 25V Input Voltage, 3A, 42V

Internal Switch

100%

10%

LT3950

3950 TA06a

2.2µF

390k

10k

FB

PWMTG

RP

PWM

VC

CTRL

RP

ISP

ISN

SW

1µF

220pF

2.2µF

8W

LED POWER

(DERATED BELOW

267k

FAULT

FAULT

EN/UVLO

6V TO 16V

100k

100k

100k

100k

100k

L1: WURTH 74437321022

D1: DIODES INC. DFLS260Q

M1: VISHAY SI7309

36k

SYNC/SPRD

RT

GND

180k

300Hz

GND

45.3k

2MHz

L1

2.2µH

D1

0.5

m1

2MHz, 8W and 0.8W Input Boost LED Driver

Startup Using Always-On Input

Startup Using 10% Dimming Input

TIME AT 2MS/DIV

3950 TA06b

TIME AT 2MS/DIV

3950 TA06c