LND48-ADJ データシートの表示（PDF） - Linear Dimensions Semiconductor
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LND48-ADJ Datasheet PDF : 4 Pages
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LND48XX
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total
temperature range.
Note 2: Regulations are 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 150ºC for IL =5mA. For IL =100µA and TJ =125ºC, line regulation is guaranteed by design to
0.2%. For LND4815 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: Group 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 the 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,100µA <= IL <=400mA, TJ <= Tjmax.
Note 8: Vshutdown >=2V, Vin <=26V, Vout =0v.
BLOCK DIAGRAM and TYPICAL APPLICATIONS
Unregulated DC
+
INPUT
+
1 µF
+
-
ERROR
AMPLIFIER
OUTPUT
5V
<= 400mA
+
6.8µF
+
1.23 V
Reference
GROUND
Fig 1 : Fixed Regulator
Unregulated DC
7
8
1
+
FEEDBACK
INPUT
OUTPUT
R1
From
CMOS
or
TTL
3
SHUTDOWN
Off
On
+
-
ERROR
AMPLIFIER
R2
V Ref 1.23V
+
1.23 V
Reference
GROUND
Vout 1.2 --> 24 V
1 µF
400mA Max
+
6.8µF
VOUT = VREF (1+ R1/R2)
Fig 2 : Adjustable Regulator
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
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