BU941 Datasheet, PDF (3/5 Pages) STMicroelectronics – HIGH VOLTAGE IGNITION COIL DRIVER NPN POWER DARLINGTON

SEMICONDUCTOR
■ SUSTAINING VOLTAGE TEST CIRCUIT
V_CC=16V
0V
t₁
20ms
B
C
D.U.T.
R1
R2
E
V_clamp
BU941 Series RRooHHSS
Nell High Power Products
■ SWITCHING TIME TEST CIRCUIT
V_D
12V
7mH
Vin
47Ω
D.U.T.
V_clamp
■ FUNCTION TEST CIRCUIT
Driver and
Current
Limiting
Circuit
24V
L=7mH
V_Z
100Ω
0.22 μF
D.U.T.
0.2Ω
16.6ms
lnput
Signal
0
11.6ms
Base
Current
0
Collector
Current
0
Collector
Emitter Voltage
24V
0
■ TYPICAL CHARACTERISTICS
Fig.1 DC Current gain
10⁴
VCE=2V
10³
125°C
www.nellsemi.com
10²
-40°C
TC=25°C
10¹
10^-1
10⁰
10¹
Collector current, l_C(A)
Page 3 of 5
l_B=0.3A
l_C=8A
V_clamp