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B4251 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part # B4251
Description  250mA Low Dropout Voltage Regulators
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B4251 Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

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Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4251
Absolute Maximum Ratings
Parameter
Symbol
Ratings
Units
Input Voltage
VIN
12
V
Output Current
IOUT
500
mA
Output Voltage
VOUT
VSS -0.3 to VIN 0.3
V
On/Off Voltage
On/Off
VSS -0.3 to VIN+ 0.3
V
Continual Total Power Dissipation
SOT-25
SOT-89
Pd
150
300
mW
Operating Ambient Temperature
TOPR
-30 to 80
°C
Storage Temperature
TSTG
-40 to 125
°C
Electrical Characteristics (Ta = 25°C, VIN = VOUT + 0.5V; unless otherwise noted)
Parameter
Conditions
MIN
TYP
MAX
UNIT
IO = 1mA
-1.4%
-
+1.4%
Output Voltage Accuracy
IO = 0 to 150mA
-2%
-
+2%
V
Line Regulation
∆VOUT/∆VIN-VOUT
IO= 100mA,
(VOUT + 0.1V)<VIN<6V
0.2
0.3
%/V
Load Regulation
VIN 6V, 0mA < IO < 120mA COUT = 1µF
0.01
0.04
%/mV
Maximum Output Current
250
Current Limit
160
500
mA
Shutdown Supply Current
TA=25°C
0.01
1
µA
Shutdown Input Bias Current
VSHDN=VIN, TA=25°C
0.01
100
nA
Shutdown Exit Delay
CBP=0
µF COUT=1µF, IO = 1mA
30
150
µsec
Shutdown Input Threshold Low
Vin=2.5 to 5.5V
0.4
V
Shutdown Input Threshold High
Vin=2.5 to 5.5V
2
V
Ground Pin Current
IOUT = 0mA……150mA
2
5
µA
IO = 150mA
160
250
Dropout Voltage
IO = 250 mA
200
280
mV
Thermal Shutdown Temperature
155
°C
Marking Format
SOT-25
FXWW
F = B4251
Variables
X = Voltage Codes
WW = Work Week Code
B = 2.0
F = 3.3
SOT-25 = 01 to 99
C = 2.5
G = 3.5
D = 2.8
H = 5.0
E = 3.0


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