RL1632R-R150-F datasheet(7/17 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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7 / 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

0.5

1.0

1.5

2.0

2.5

3.0

LED Current, iLED (A)

VIN = 24 V, VOUT = 15 V

VIN = 12 V, VOUT = 5.5 V

VIN = 12 V, VOUT = 3.5 V

0.5

1.0

1.5

2.0

2.5

3.0

LED Current, iLED (A)

fSW = 500 kHz

fSW = 1 MHz

fSW = 2 MHz

0.1

0.01

0.001

0.1

100

110

Duty Cycle (%)

iLED = 3 A

iLED = 2 A

iLED = 1.4 A

Figure 3. Efficiency versus LED Current at various LED voltages

Operating conditions: fSW = 1 MHz

Figure 4. Efficiency versus LED Current at various switching frequencies

Operating conditions: VIN = 12 V, VOUT = 5.5 V

Figure 5. Average LED Current versus PWM dimming percentage

Operating conditions: VIN = 12 V, VOUT = 3.5 V, fSW = 1 MHz, fPWM = 200 Hz, L = 10 μH

RL1632R-R150-F Datasheet(PDF) 7 Page - Allegro MicroSystems

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