A4407 데이터 시트보기 (PDF) - Allegro MicroSystems

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A4407

2.2 MHz Constant On-Time Buck Regulator With Two External and Two Internal Linear Regulators

Allegro MicroSystems 

A4407

2.2 MHz Constant On-Time Buck Regulator

With Two External and Two Internal Linear Regulators

ENBAT Start / Stop Thresholds versus Temperature

4.0

3.8

3.6

3.4

3.2

3.0

2.8

2.6

2.4

START

2.2

STOP

2.0

-40 -20 0 20 40 60 80 100 120 140

Temperature (°C)

ENABLE Start / Stop Thresholds versus Temperature

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

START

0.2

STOP

0

-40 -20 0 20 40 60 80 100 120 140

Temperature (°C)

CPOR Charging Current versus Temperature

16

15

14

13

12

11

10

-40 -20 0 20 40 60 80 100 120 140

Temperature (°C)

ENBATS (Low) Voltage versus Temperature

400

350

300

250

200

150

100

50

0

-40 -20 0 20 40 60 80 100 120 140

Temperature (°C)

VREG Valley Current Limit versus Temperature

450

425

400

375

350

325

300

275

250

-40 -20 0 20 40 60 80 100 120 140

Temperature (°C)

1V2 and 3V3 Overcurrent Threshold versus Temperature

270

260

250

240

230

220

210

200

1V2

190

3V3

180

-40 -20 0 20 40 60 80 100 120 140

Temperature (°C)

Allegro MicroSystems, Inc.

10

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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