RL1632R-R150-F datasheet(5/17 Pages) ALLEGRO

Part #	RL1632R-R150-F

Description	Constant-Current 3-Ampere PWM Dimmable Buck Regulator LED Driver

PDF	17 Pages

Scroll/Zoom	100%

Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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5 / 17 page

Constant-Current 3-Ampere PWM Dimmable

Buck Regulator LED Driver

A6211

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Characteristic Performance

Panel 1B. VIN = 24 V

Panel 1C. VIN = 30 V

Panel 1A. VIN = 19 V

C1,C2

VIN

VOUT

iLED

VEN

Figure 1. Startup waveforms from off-state at various input voltages; note that the rise time of the LED current depends on

input/output voltages, inductor value, and switching frequency

• Operating conditions: LED voltage = 15 V, LED current = 1.3 A, R1 = 63.4 kΩ (frequency = 1 MHz in steady state),

VIN = 19 V (panel 1A), 24 V (panel 1B) and 30 V (panel 1C)

• Oscilloscope settings: CH1 (Red) = VIN (10 V/div), CH2 (Blue) = VOUT (10 V/div),

CH3 (Green) = iLED (500 mA/div), CH4 (Yellow) = Enable (5 V/div), time scale = 50 μs/div

C1,C2

VIN

VOUT

iLED

VEN

C1,C2

VIN

VOUT

iLED

VEN

RL1632R-R150-F Datasheet(PDF) 5 Page - Allegro MicroSystems