Replacement of
L48-XX
MIK48-XX
400 mA Low Dropout
Voltage Regulator
March 1999 - revised September 2002
Description
This series of fixed-voltage monolithic micropower voltage regulators is designed for a wide range of applications. This device excellent
choice for use in battery-powered application. Furthermore, the quiescent current increases only slightly at dropout, which prolongs
battery life.
This series of fixed-voltage regulators features very low quiescent current (100mA Typ.) and very low drop output voltage (Typ. 60mV at
light load and 420mV at 400mA). This includes a tight initial tolerance of 0.5% typ., extremely good load and line regulation of 0.05%
typ., and very low output temperature coefficient.
This series of fixed-voltage regulators is offered in 3-pin TO-220 package compatible with other fixed-voltage regulators. Adjust model is
offered in 5-pin TO-220 package and fixed model with shutdown input is offered in 4-pin TO-220 package.
Features
400mA output within 2% over temperature
Very low quiescent current
Low dropout voltage (420 mV Typ)
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Unregulated DC input can withstand -20V reverse battery
and +60V positive transients
Applications
High-efficiency linear regulator
Battery powered systems
Portable/Palm top/Notebook computers
Portable consumer equipment
Portable Instrumentation
Automotive Electronics SMPS Post-Regulator
Package information
Absolute Maximum Ratings
Parameter Maximum
Units
Power Dissipation
Internally Limited
W
Lead Temperature (Soldering, 5 seconds)
260
C
Storage Temperature Range
-65 to+150
C
Operating Junction Temperature Range
-55 to +150
C
Input Supply Voltage
-20 to +35
V
Continuous total dissipation at 25
C free-air temperature
2 W
Continuous total dissipation at (or below) 25
C case temperature
15 W
Device Selection Guide
(Note 1)
Device Output
voltage
MIK4833 3.3V
MIK4805 5V
MIK4808 8V
MIK4885 8.5V
MIK4809 9V
MIK4810 10V
MIK4812 12V
MIK4815 15V
MIK48-adj adj
Note 1: Other fixed versions are available Vout = 2.0V to 5.0V
Page 1 of 4
Replacement of
L48-XX
MIK48-XX
400 mA Low Dropout
Voltage Regulator
March 1999 - revised September 2002
Electrical Characteristics
(T
j
= 25
o
C, V
IN
= 14.4V, I
L
=5mA, C
0
=100mF; unless otherwise noted)
Parameter Conditions
Min
Typ
Max
Units
Output Voltage
-25
CT
J
85C
Full Operating Temperature
0.985|V
0
|
0.98|V
0
|
V
0
1.015|V
0
|
1.02|V
0
|
Output Voltage
1mA
I
L
400mA, T
J
T
JMAX
0.975|V
0
| V
0
1.025|V
0
|
Input Supply Voltage
26
V
Output Voltage Temperature Coefficient
(Note 1)
50
150
ppm/
C
Line Regulation (Note 2)
13V
Vin
26V (Note 3)
0.1
0.4 %
Load Regulation (Note 2)
1mA
I
L
400mA
0.1
0.3 %
Dropout Voltage (Note 4)
I
L
=150 mA
I
L
=400 mA
200
420
400
700
mV
Ground Current (Note 5)
I
L
=100 mA
I
L
=150 mA
I
L
=400 mA
100
12
30
200
20
50
A
mA
Dropout Ground Current(Note 5)
Vin= Vout
-0.5V, I
L
=100 mA
200
300 A
Current Limit
Vout=0
600
900
mA
Thermal Regulation (Note 6)
0.05
0.2
%/W
Output Noise, 10Hz to 100KHz
I
L
=100 mA
C
L
=2.2mF
C
L
=3.3mF
C
L
=33mF
500
350
120
V
RMS
Ripple Rejection Ratio
I
0
=350mA, f = 120Hz, C
0
=100mF, Vin
= V
0
+ 3V +2Vpp
60 dB
Adjust model
Reference
Voltage
1.21 1.235 1.26
Reference Voltage
Over Temperature (Note 7)
1.185
1.285
V
Feedback Pin Bias Current
20
40
nA
Reference Voltage Temperature
Coefficient
(Note
1)
50
ppm/
C
Feedback Pin Bias Current Temperature
Coefficient
0.1
nA/
C
Shutdown Input
Input Logic Voltage
Low (Regulator ON)
High (Regulator OFF)
2
1.3 0.7 V
Shutdown Pin Input Current
V
S
=2.4V
V
S
=26V
30
450
50
600
Regulator Output Current in Shutdown
(Note 8)
200
A
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature
range.
Note 2: Regulations is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage
due to heating effects are covered under the specification for thermal regulation.
Note 3: Line regulation is tested at 150
C for I
L
= 5mA. For I
L
= 100mA and T
J
= 125
C, line regulation is guaranteed by design to 0.2%.
For MIK4815 16V
Vin 26V.
Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value
measured at 1V differential.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin
current and output load current.
Note 6: Thermal regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line
regulation effects. Specifications are for a 200mA load pulse (3W pulse) for T = 10ms.
Note 7: Vref
Vout (Vin - 1V), 2.3V Vin 26V, 100
m
A
I
L
400mA, T
J
T
JMAX
.
Note 8: Vshutdown
2V, Vin 26V, Vout = 0V.
Page 2 of 4
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