A8521 datasheet(8/35 Pages) ALLEGRO

8 / 35 page

Wide Input Voltage Range, High Efficiency

Fault Tolerant LED Driver

A8521

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

7.7

7.6

7.8

7.9

8.0

8.1

8.2

8.3

8.4

190

192

194

196

198

200

202

204

206

208

210

3.60

3.61

3.62

3.63

3.64

3.65

3.66

3.67

3.68

3.69

3.70

1.80

1.85

1.90

1.95

2.00

2.05

2.10

2.15

2.20

Switching Frequency

OVP Pin Sense Current

OVP Pin Overvoltage Threshold

4.00

4.05

4.10

4.15

4.20

4.25

4.30

4.35

4.40

VIN Input Sleep Mode Current

versus Ambient Temperature

VIN UVLO Start Threshold Voltage

VIN UVLO Stop Threshold Voltage

versus Ambient Temperature

Temperature (°C)

-50 -40 -30 -20 -10

10 20 30 40 50 60 70 80 90 100 110 120 130

-50 -40 -30 -20 -10

10 20 30 40 50 60 70 80 90 100 110 120 130

-50 -40 -30 -20 -10

10 20 30 40 50 60 70 80 90 100 110 120 130

-50 -40 -30 -20 -10

10 20 30 40 50 60 70 80 90 100 110 120 130

-50 -40 -30 -20 -10

10 20 30 40 50 60 70 80 90 100 110 120 130

-50 -40 -30 -20 -10

10 20 30 40 50 60 70 80 90 100 110 120 130

Characteristic Performance

TA = TJ

A8521 Datasheet(PDF) 8 Page - Allegro MicroSystems

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