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