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BCR410W
Active Bias Controller
Characteristics
• Supplies stable bias current from 1.8V operating
3
2
4
voltage on
1
• Low voltage drop:
110mV for 10mA collector currrent
Application notes
S e n s e
4
• Stabilizing bias current of NPN transistors and
FET's from 100µA to 20mA
3
Io u t
+
BDTIC
-
=
• Ideal supplement for Sieget and other transistors
1
V re f
2
V s
G N D
• Pb-free (RoHS compliant) package 1)
• Qualified according AEC Q101
Type
Marking
BCR410W
W8s
Pin Configuration
1= Vs
2=GND 3=Iout
Package
4=Sense
SOT343
Maximum Ratings
Parameter
Symbol
Value
Unit
Supply voltage
VS
18
V
Output current
Iout
0.5
mA
Total power dissipation, T S = 110 °C
Ptot
100
mW
Junction temperature
Tj
150
°C
Storage temperature
Tstg
-65 ... 150
Thermal Resistance
Junction - soldering point2)
RthJS
≤ 470
K/W
1Pb-containing package may be available upon special request
2For calculation of R
please refer to Application Note Thermal Resistance
thJA
1
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2007-05-29
BCR410W
Electrical Characteristics at TA = 25°C, unless otherwise specified
Symbol
Values
Parameter
Unit
min.
typ.
max.
-
200
400
µA
DC Characteristics
Additional current consumption
I0
VS = 3 V
DC Characteristics with stabilized NPN-Transistors
Lowest sufficient battery voltage
VSmin
-
1.8
-
V
Voltage drop
Vdrop
-
110
-
mV
Change of IC versus hFE
hFE = 50
∆IC/IC
-
tbd
-
∆h FE /
Change of IC versus VS
VS = 3 V
∆IC/IC
-
2
-
%/V
Change of IC versus TA
∆IC/IC
-
0.15
-
%/K
BDTIC
IC = 10 mA
h FE
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2007-05-29
BCR410W
Collector Current IC = f (VS)
Voltage drop Vdrop = f (I C)
of stabilized NPN Transistor
Parameter Rext. (Ω)
10 2
300
mV
mA
240
10 Ohm
220
Vdrop
10 1
15 Ohm
Ic
22 Ohm
200
180
BDTIC
160
47 Ohm
140
100 Ohm
10 0
120
100
220 Ohm
80
470 Ohm
60
40
1000 Ohm
10 -1
2.0
20
2.5
3.0
3.5
4.0
4.5
V
0 -1
10
5.5
10
0
10
Vs
1
mA
10
IC
Collector current I C = f (Rext.)
Total power dissipation Ptot = f (TS)
of stabilized NPN Transistor
10 2
120
mA
mW
80
Ic
Ptot
10 1
60
10 0
40
20
10 -1 1
10
10
2
10
3
0
0
Ohm 10 4
20
40
60
80
100
120 °C
150
TS
Rext
3
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2007-05-29
2
BCR410W
Application Circuit:
V s
B C R 4 1 0 W
R e x t
=
V re f
+
L c
R b
R F o u t
R F in
R F T r a n s is to r
BDTIC
4
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2007-05-29
Package SOT343
BCR410W
Package Outline
0.9 ±0.1
2 ±0.2
0.1 MAX.
1.3
0.1
A
1
2
0.1 MIN.
0.15
1.25 ±0.1
3
2.1 ±0.1
4
0.3 +0.1
-0.05
+0.1
0.15 -0.05
+0.1
0.6 -0.05
4x
0.1
0.2
M
M
A
BDTIC
Foot Print
1.6
0.8
0.6
1.15
0.9
Marking Layout (Example)
Manufacturer
2005, June
Date code (YM)
BGA420
Type code
Pin 1
Standard Packing
Reel ø180 mm = 3.000 Pieces/Reel
Reel ø330 mm = 10.000 Pieces/Reel
0.2
2.3
8
4
Pin 1
2.15
1.1
5
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2007-05-29
BCR410W
Published by
Infineon Technologies AG
81726 München, Germany
© Infineon Technologies AG 2007.
All Rights Reserved.
Attention please!
The information given in this data sheet shall in no event be regarded as a guarantee
of conditions or characteristics (“Beschaffenheitsgarantie”). With respect to any
examples or hints given herein, any typical values stated herein and/or any information
regarding the application of the device, Infineon Technologies hereby disclaims any
and all warranties and liabilities of any kind, including without limitation warranties of
non-infringement of intellectual property rights of any third party.
BDTIC
Information
For further information on technology, delivery terms and conditions and prices
please contact your nearest Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain dangerous substances.
For information on the types in question please contact your nearest
Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or
systems with the express written approval of Infineon Technologies, if a failure of
such components can reasonably be expected to cause the failure of that
life-support device or system, or to affect the safety or effectiveness of that
device or system.
Life support devices or systems are intended to be implanted in the human body,
or to support and/or maintain and sustain and/or protect human life. If they fail,
it is reasonable to assume that the health of the user or other persons
may be endangered.
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2007-05-29