Datasheet

TLE7183F
Data Sheet 18 V2.1, 2008-04-30
Table 5 Priorisation of Errors
Reset of ERROR registers and Disable
The TLE7183F can be reseted by the enable pins ENAx. If one or two ENAx pins is pulled to low for a specified
minimum time, the error registers are cleared and the external MOSFETs are switched off actively.
During disable only the errors undervoltage shut down and overtemperature warning are shown. Other errors are
not displayed.
5.2.8 Electrical Characteristics
Priority Error
1 Short circuit detection
2 Undervoltage detection
3 Overvoltage detection
4 Overtemperature
Overcurrent
Electrical Characteristics - Protection and diagnostic functions
V
S
= 5.5 to 20V, T
j
= -40 to +150°C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
Overtemperature
5.2.1 Overtemperature warning
T
j(OW)
150 170 190 °C –
5.2.2 Hysteresis for overtemperature
warning
dT
j(OW)
–20–°C–
Overcurrent warning
5.2.3 Overcurrent threshold
V
THOC
2 – 4.5 V Vs=5.5..8V
5.2.4 Overcurrent threshold
V
THOC
2–4.8VVs=8..20V
5.2.5 Input offset voltage of OC Comp
V
OCOF
-50 – 50 mV –
5.2.6 Input offset voltage temperature
drift of OC Comp
1)
V
IO
-5–5mV–
5.2.7 Over current protection threshold
hysteresis
dV
THOC
25 – mV Vs=5.5..8V
5.2.8 Over current protection threshold
hysteresis
dV
THOC
50 80 – mV Vs=8..20V
5.2.9 Filter time of over current protection
t
OC
1.0 1.5 3.0 µs
Short circuit protection
5.2.10 Filter time of short circuit protection
t
SCP(off)
4.5 6.8 9 µs default
5.2.11 Maximum duty cycle for no SCD
2)
D
ySCDmax
––6%fPWM=20kHz at
IHx or ILx and at
static applied SC
5.2.12 minimum duty cycle for periodic
SCD
2)
D
ySCDmin
13 – – % fPWM=20kHz at
IHx or ILx and at
static applied SC