Active Bias Controller (Supplies stable bias current even at low battery voltage and extreme ambient temperature variation)
BCR 400R Active Bias Controller
Characteristics • Supplies stable bias current even at low battery voltage
and extreme ...
BCR 400R Active Bias Controller
Characteristics Supplies stable bias current even at low battery voltage
and extreme ambient temperature variation
Low voltage drop of 0.7V Application notes Stabilizing bias current of
NPN transistors and FETs from
from less than 0.2mA up to more than 200mA
Ideal supplement for SIEGET and other RF
transistors also usable as current source up to 5mA
Type
Marking Ordering Code Pin Configuration
Package
BCR 400R W4s
Q62702-C2479 1 GND/E
NPN 2 Contr/B
NPN 3 VS 4 Rext/C
NPN SOT-143R
(E
NPN,B
NPN,C
NPN are electrodes of a stabilized
NPN transistor)
Maximum Ratings Parameter Supply voltage Control current Control voltage Reverse voltage between all terminals Total power dissipation, TS = 83°C Junction temperature Storage temperature Thermal Resistance Junction ambient
1)
Symbol
Values 18 10 16 0.5 330 150 - 65 ... + 150 ≤ 280 ≤ 190
Unit V mA V mW °C
VS IContr. VContr. VR Ptot Tj Tstg RthJA RthJS
K/W
Junction - soldering point
1) Package mounted on pcb 40mm x 40mm x 1.5mm / 6cm2 Cu
Semiconductor Group
1
Nov-27-1996
BCR 400R
Electrical Characteristics at TA=25°C, unless otherwise specified Parameter Symbol min. DC Characteristics Additional current consumption Values typ. max. Unit
I0
20 0.1 40
µA mA -
VS = 3 V
Lowest stabilizing current
Imin
VS = 3 V
DC Characteristics with stabilized
NPN-
Transistors Lowest sufficient battery voltage
VSmin
1.6 0.65 0.08 0.15 0.2 -
V
IB (
NPN) < 0.5 mA
Voltage drop (VS - VCE)
Vdrop
∆ IC...
