Bay Linear L48XXT Datasheet
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com
400mA Low Dropout Voltage Regulators
L48XX
Adjustable & Fix Output
Advance Information
Pin Connection
Ordering Information
Devices Package Temp.
L48XXT TO-220
0 to 70 °°°°
Description
The Bay Linear L48XX this series of fixed-voltage monolithic
micro-power voltage regulators is designed for a wide range of
applications. Thi s device excellent choice in battery- powered
application. Fu rthermore, the quiescent current increases on ly
slight at dropout, which prolong battery life.
This series of fixed voltage regulators features very low
quiescent current (100mATyp.) 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 regulator is offered in 3-pin TO220 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
•
Direct replacement for SGS-THOMSONL48XX series
Applications
• High-efficiency linear regulator
• Battery powered systems
• Portable /Palm top/ Notebook Computers
• Portable consumer equipment
• Portable instrumentation
• Automotive Electronics
Bay Linear
Bay LinearBay Linear
Bay Linear
Linear Excellence
Linear Excellen
ce
Linear Excellen
ce
Linear Excellence
Plastic Package
TO-220
Front View
V
OUT
GND
V
IN
Plastic Package
TO-220
Plastic Package
TO-220
Front View
V
OUTVOUT
GND
V
INVIN
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com
L48XX
Absolute Maximum Rating
Parameter Value
Lead Temperature (Soldering, 5 seconds)
260°C
Storage Temperature Range
-65°C to +150°
Operating Junction Temperature Range
-55°C to +150°C
Input Supply Voltage -20V to +35V
Continuous total dissipation at 25
°
C free-air temperature
2W
Continuous total dissipation at (or below) 25
°
C case
temperature
15W
Electrical Characteristics
(VIN = 4.75V to 5.25V; IO = 10mA to 1.5Amp, unless otherwise specified)
Parameter Conditions MIN TYP MAX UNIT
0.985 V
O
1.015V
O
Output Voltage
-25
°C ≤
T
J
≥85°
C
Full Operating Temperature
0.98V
O
1.02V
O
Output Voltage
1mA ≤ 1
L
≤
400mA, T
J
≤
T
JMAX
0.975V
O
V
O
1.025V
O
V
Input Supply Voltage 26
Output Voltage Temperature Coefficient (Note 1) 50 150
ppm/°C
Line Regulation (Note 2)
13V≤V in ≤26V (Note3)
0.1 0.4 %
Load Regulation (Note 2)
1mA≤I
L
≤
400mA
0.1 0.3 %
Dropout Voltage (Note 4) IL= 150mA,
I
L
=400mA
200
420
400
700
mV
Ground Current (Note 5)
I
L
= 100µA
IL= 150mA
I
L
= 400mA
100
12
30
200
20
50
µ
A
mA
Dropout Ground Current (Note5)
V in = V out-0.5V, I
L
=100µA
110 220
µ
A
Current Limit V out = 0 350 500 mA
Thermal Regulation (Note 6) 0.05 0.2 %/W
Output Noise, 10Hz to 100KHz
I
L
=100mA
Cl=2.2µF
C
L
=3.3µF
C
µ
=33µF
500
350
120
µ
V RMS
Ripple Rejection Ratio
I
ο
=350mA, f=120Hz, Cο=100µF,
V in =V
ο
+3V+2Vpp-
60 dB
Adjust Model
Reference Voltage 1.21 1.235 1.26
Reference Voltage Over Temperature (Note7) 1.185 1.285
V
Feedback Pin Bias Current 20 40 nA
Reference Voltage Temperature
Coefficient
(Note1) 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 Vs=2.4V
Vs=26V
30
450
50
600
Regular Output Current in Shutdown (Note 8)
5.0V≤V out<15.0V
3.3V≤V out<5.0V
2.0V≤V out<3.3V
10
20
30
µ
A
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