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CMPWR280

1.5A SmartOR™ Dual Regulator with VAUX Drive

California Micro Devices Corp 

CMPWR280

Typical DC Characteristics

Unless stated otherwise, all DC characteristics were

measured at room temperature with a nominal VCC

supply voltage of 5.0 volts and an output capacitance

of 10µF.

VCC Line Regulation, as shown in Figure 1, is mea-

sured while forcing the deselect threshold to an artifi-

cial low level for loads of 100mA, 500mA and 1.5A. At

the maximum rated load of 1.5A, a drop in line regula-

tion occurs when the VCC supply voltage drops below

3.8V. For light load conditions (100mA), regulation is

maintained as low as 3.2V.

3.35

100mA load

3.30

Line Regulation

3.25

500mA load

3.20

3.15

1.5A load

3.10

3.05

3.3

3.6

3.9

4.2

4.5

4.8

VCC [V]

Figure 1. VCC Line Regulation

VCC Load Regulation (pulse condition) performance

is shown up to and beyond the rated load. A change in

load from 10% to 100% of rated current (150mA to

1500mA) results in an output voltage change of about

20mV. This translates into an effective output imped-

ance of less than 15MΩ.

3.36

3.34

3.32

3.30

3.28

3.26

3.24

0

500

1000

1500

Load Current [mA]

Figure 2. VCC Load Regulation

VSBY Load Regulation (pulse condition) perfor-

mance is shown up to and beyond the rated load. A

change in load from 10% to 100% of rated (50mA to

500mA) results in an output voltage change of about

20mV. This translates into an effective output imped-

ance of less than 50MΩ.

3.36

3.34

3.32

3.30

3.28

3.26

3.24

0

100

200

300

400

500

Load Current [mA]

Figure 3. VSBY Load Regulation

© 2004 California Micro Devices Corp. All rights reserved.

08/16/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 5

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