U6081B Datasheet, PDF (5/8 Pages) TEMIC Semiconductors – PWM Power Control with Low Duty Cycle Switch Off

U6081B
Parameters
Test Conditions / Pins Symbol Min
Typ
Max Unit
Switch-off at small duty cycles V_Batt = 12 V Pin 3
Output disabled
V₃/V_S
0.3
0.32
0.34
Output active
Hysteresis switch-on
V₃/V_S
0.32
0.34
0.36
DV₃/V_S 0.004
0.032
Gate output
Pin 8
Voltage
Low level
V₈
V_Batt
T_amb
=
=
16.5 V,
110°C, R₃
=
150
W
High level,
V₈
duty cycle 100%
0.35
0.70
0.95
V
1.5 *)
V₇
Current
V₈ = Low level
I₈
1.0
mA
V₈ = High level, I₇ > | I₈ |
–1.0
Oscillator
Frequency
Threshold cycle
Upper
Lower
Oscillator current
Frequency tolerance
Pin4
f
10
2000
Hz
+ + V₈
High, a₁
V_T100
V_S
a₁
0.68
0.7
0.72
+ + V₈
Low, a₂
t ^VT 100
V_S
a₂
0.65
0.67
0.69
+ a₃
V_TL
V_S
V_Batt = 12 V
a₃
0.26
0.28
0.3
I_osc
34
45
54
mA
C₄ open, C₂ = 470 nF,
duty cycle = 50%
f
6.0
9.9
13.5
Hz
*) Reference point is battery ground
TELEFUNKEN Semiconductors
5 (8)
Rev. A1, 14-Feb-97