2007-05-29
1
BCR410W
12
3
4
Active Bias Controller
Characteristics
• Supplies stable bias current from 1.8V operating
voltage on
• Low voltage drop:
110mV for 10mA collector currrent
Application notes
• Stabilizing bias current of NPN transistors and
FET's from 100µA to 20mA
• Ideal supplement for Sieget and other transistors
• Pb-free (RoHS compliant) package1)
• Qualified according AEC Q101
=
4 3
1 2
+
-
V
r e f
S e n s e I o u t
G N DV s
Type Marking Pin Configuration Package
BCR410W W8s 1= Vs 2=GND 3=Iout 4=Sense SOT343
Maximum Ratings
Parameter Symbol Value Unit
Supply voltage VS18 V
Output current Iout 0.5 mA
Total power dissipation, TS = 110 °C Ptot 100 mW
Junction temperature Tj150 °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 RthJA please refer to Application Note Thermal Resistance
2007-05-29
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BCR410W
Electrical Characteristics at TA = 25°C, unless otherwise specified
Parameter Symbol Values Unit
min. typ. max.
DC Characteristics
Additional current consumption
VS = 3 V
I0- 200 400 µA
DC Characteristics with stabilized NPN-Transistors
Lowest sufficient battery voltage VSmin - 1.8 - V
Voltage drop
IC = 10 mA
Vdrop - 110 - mV
Change of IC versus hFE
hFE = 50
∆IC/IC- tbd - ∆hFE /
hFE
Change of IC versus VS
VS = 3 V
∆IC/IC- 2 - %/V
Change of IC versus TA∆IC/IC- 0.15 - %/K
2007-05-29
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BCR410W
Collector Current IC = f (VS)
of stabilized NPN Transistor
Parameter Rext. (Ω)
2.0 2.5 3.0 3.5 4.0 4.5 V5.5
Vs
-1
10
0
10
1
10
2
10
mA
Ic
10 Ohm
15 Ohm
22 Ohm
47 Ohm
100 Ohm
220 Ohm
470 Ohm
1000 Ohm
Voltage drop Vdrop = f (IC)
10 -1 10 0 10 1 10 2
mA
IC
0
20
40
60
80
100
120
140
160
180
200
220
240
mV
300
Vdrop
Collector current IC = f (Rext.)
of stabilized NPN Transistor
10 1 10 2 10 3 10 4
Ohm
Rext
-1
10
0
10
1
10
2
10
mA
Ic
Total power dissipation Ptot = f (TS)
0 20 40 60 80 100 120 °C 150
TS
0
20
40
60
80
mW
120
Ptot
2007-05-29
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BCR410W
Application Circuit:
=
R e x t
R F o u t
R F i n
R b
V s B C R 4 1 0 W
V r e f
L c
+
-
R F T r a n s i s t o r
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BCR410W
Package SOT343
Package Outline
Foot Print
Marking Layout (Example)
Standard Packing
Reel ø180 mm = 3.000 Pieces/Reel
Reel ø330 mm = 10.000 Pieces/Reel
2005, June
Date code (YM)
BGA420
Type code
0.2
4
2.15
8
2.3
1.1
Pin 1
0.6
0.8
1.6
1.15
0.9
1.25
±0.1
0.1 MAX.
2.1
±0.1
0.15 +0.1
-0.05
0.3 +0.1
2±0.2 ±0.1
0.9
12
34 A
+0.1
0.6 A
M
0.2
1.3
-0.05
-0.05
0.15
0.1 M
4x
0.1
0.1 MIN.
Pin 1
Manufacturer
2007-05-29
6
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.
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.
