A8732 查看數據表（PDF） - Allegro MicroSystems

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A8732

Ultra Small Mobile Phone Xenon Photoflash Capacitor Charger with IGBT Driver

Allegro MicroSystems 

A8732

Ultra Small Mobile Phone Xenon Photoflash

Capacitor Charger with IGBT Driver

Characteristic Performance

Charge Time versus Battery Voltage at Various ILIM

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

20

18

16

ILIM13 (0.65A)

14

ILIM11 (0.79A)

12

ILIM9 (0.93A)

10

ILIM7 (1.07A)

8

ILIM5 (1.22A)

6

ILIM3 (1.36A)

4

ILIM1 (1.50A)

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 at Various ILIM

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

86%

84%

82%

80%

78%

76%

74%

72%

70%

68%

66%

64%

62%

60%

58%

56%

54%

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

ILIM13 (0.65A)

ILIM11 (0.79A)

ILIM9 (0.93A)

ILIM7 (1.07A)

ILIM5 (1.22A)

ILIM3 (1.36A)

ILIM1 (1.50A)

Allegro MicroSystems, Inc.

8

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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