CM1581
5A LOW DROPOUT VOLTAGE REGULATOR
2002/02/05
Preliminary Rev. 1
Champion Microelectronic Corporation
Page 4
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 0mA, and TJ = +25℃; unless otherwise noted
CM1581
Parameter
Device
Test Conditions
Min.
Typ.
Max.
Unit
CM1581D
VCONTROL = 3.3V, VPOWER = 2.5V
1.792
1.800
1.818
V
CM1581K
VCONTROL = 5.0V, VPOWER = 3.3V
2.474
2.500
2.525
V
CM1581S
VCONTROL = 5.8V, VPOWER = 3.8V
3.267
3.300
3.333
V
Output Voltage
CM1581ZJ
VCONTROL = 7.5V, VPOWER = 5.5V
4.950
5.000
5.050
V
CM1581D
VCONTROL = 3.3V, VPOWER = 2.5V
1.771
1.800
1.829
V
CM1581K
VCONTROL = 5.0V, VPOWER = 3.3V
2.460
2.500
2.540
V
CM1581S
VCONTROL = 5.0V, VPOWER = 4.1V
3.247
3.300
3.353
V
Output Voltage
CM1581ZJ
VCONTROL = 6.5V, VPOWER = 5.8V
IOUT = 5A
4.920
5.000
5.080
V
VCONTROL = 5.0V, VPOWER = 3.3V (note1)
1.238
1.250
1.262
V
Reference Voltage CM1581(adj)
VCONTROL = (VOUT + 1.5V) to 12V, VPOWER = (VOUT +
0.8V) to 7V, IOUT = 10mA to 5A
1.230
1.250
1.270
V
Line Regulator (note 2)
1.5V+ VOUT <= VCONTROL <= 12V,
0.8V<= VPOWER - VOUT <= 5.5V
0.04
0.20
%
Load Regulation (note 2)
VCONTROL = VOUT + 2.5V, VPOWER = VOUT + 0.8V,
IOUT = 10mA to 5A
0.08
0.3
%
IOUT = 10mA
Dropout Voltage (Note 3)
VCONTROL - VOUT
VPOWER = VOUT + 0.8V
IOUT = 5A
1.00
1.15
1.15
1.30
V
IOUT = 10mA
Dropout Voltage (Note 3)
VPOWER - VOUT
VCONTROL = VOUT + 2.5V
IOUT = 5A
0.10
0.45
0.17
0.50
V
Adjust Pin Current
VCONTROL = 2.75V, VPOWER = 2.05V,
IOUT = 10mA
50
120
µA
Control Pin Current
VCONTROL = VOUT + 2.5V, VPOWER = VOUT + 0.8V,
IOUT = 10mA to 5A
80
135
mA
Current Limit
(VIN – VOUT ) = 1.5V
5.1
6.8
A
Minimum Load Current (Note 4)
VCONTROL = 5.0V, VPOWER = 3.3V
5
10
mA
Ripple Rejection (Note 5)
VCONTROL = VPOWER = VOUT + 2.5V,
VRIPPLE = 1VPP, IOUT = 2.5A
60
80
dB
Thermal Regulation
TA = 25℃
0.003
%/W
Note 1: Output voltage is set to be 2.5V.
Note 2: Line and load regulations are guaranteed up to maximum power dissipation determined by input/output differential and
the output current. However, the maximum power will not be available over the full input/output voltage range.
Note 3: The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Note 4: The minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor
divider used to set the output voltage is selected to meet the minimum load current requirement.
Note 5: These parameters, although guaranteed, are not tested in production prior to shipment.
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