A8740 Просмотр технического описания (PDF) - Allegro MicroSystems

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A8740

Ultra Small Mobile Phone Xenon Photoflash Capacitor Charger with IGBT Driver

Allegro MicroSystems 

A8740

Ultra Small Mobile Phone Xenon Photoflash

Capacitor Charger with IGBT Driver

Characteristic Performance

Charge Time versus Battery Voltage

Transformer LPRIMARY = 12.8 μH, N =10.25, VIN =3.6 V, COUT = 100 μF / 330 V UCC, at room temperature

16

14

12

10

8

6

4

2

0

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

Battery Voltage (V)

Efficiency versus Battery Voltage

Transformer LPRIMARY = 12.8 μH, N =10.25, VIN =3.6 V, at room temperature

85%

80%

75%

70%

65%

60%

55%

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

Allegro MicroSystems, Inc.

7

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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