CMPWR300 查看數據表（PDF） - California Micro Devices Corp
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CMPWR300 Datasheet PDF : 11 Pages
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CALIFORNIA MICRO DEVICES
CMPWR300
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.
Fig 1.1.
Line regulation of the regulator is shown here. At maximum
rated load conditions (500mA), a 100mV drop in regulation
occurs when the line voltage falls below 3.8V. For light load
conditions (100mA), regulation is maintained for line voltages
as low as 3.5V.
In normal operation the regulator is deselected at 4.2V, which
ensures a regulation output drop of less than 100mV is
maintained.
Fig 1.1. Line Regulation
3.35
100mA load
3.30
3.25
500mA load
3.20
3.15
3.10
3.05
3.0
3.5
4.0
4.5
5.0
Vcc [V]
Fig 1.2.
Load regulation (pulse condition) performance 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 impedance of less than 50mΩ.
Fig 1.2. Load Regulation (pulse condition)
3.36
3.34
3.32
3.30
3.28
3.26
3.24
0
200
400
600
800
Load Current [mA]
Fig 1.3.
VAUX Switch Resistance is shown across a broad range of
VAUX supply level. From 2.7V and 3.6V, it only varies from
about 130mΩ down to 110mΩ.
Fig 1.3. Vaux Switch Resistance vs. Vaux
200
180
160
140
120
100
80
©2000 California Micro Devices Corp. All rights reserved.
4
215 Topaz Street, Milpitas, California 95035
60
2.7
3
3.3
Vaux [V]
Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
3.6
12/5/2000
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