TLE7368 Datasheet, PDF (21/39 Pages) Infineon Technologies AG – Next Generation Micro Controller Supply

TLE7368
General Product Characteristics
Electrical Characteristics (cont’d)
V_IN = V_{IN_STBY} = 13.5 V, T_j = -40 °C to +150 °C,
V_CCP = 9.0 V; SEL_STBY = Q_STBY; all voltages with respect to ground.
Pos. Parameter
Symbol
Limit Values
Unit
Conditions
Min. Typ. Max.
Window Watchdog
4.4.122 H-input voltage
threshold
V_{WDI, high}
–
–
2.0 V –
4.4.123 L-input voltage
threshold
V_{WDI, low}
0.8 –
–
V–
4.4.124
4.4.125
4.4.126
WDI pull-up resistor
Watchdog cycle time
Window duration (OW,
CW, FW)
R_WDI
T_WD
t_{WD, W}
60
100 140 kΩ connected to Q_LDO2
–
2
–
T_cycle –
–
512 –
T_WD –
4.4.127 Window duration (IW) t_{WD, IW}
–
32
–
T_WD –
4.4.128 Window watchdog
t_{WD, start}
–
32
–
T_WD Watchdog will start/initialized if
initialization time
WDI is kept low for this period
and RO_2 is released
4.4.129 Watchdog output low V_WDO,low
–
–
0.4 V
I_WDO = 2 mA
voltage
4.4.130 Watchdog output
leakage current
I_WDO,leak
–
–
1
µA WDO state = High
Thermal Shutdown
4.4.131 Overtemperature
shutdown
T_{j, shtdwn}
160 175 190 °C ^{1) 8)}
4.4.132 Overtemperature
∆T
shutdown hysteresis
15 –
30
K
1)
1) Specified by design, not subject to production test.
2) Tested according to measurement circuit 1.
3) V_CCP supplied externally with a voltage according to the actual value of V_CCP measurement.
4) V_{dr, Q_LDO1} = V_{FB/L_IN} - V_{Q_LDO1}; V_{dr, Q_LDO2} = V_{IN_LDO2} - V_{Q_LDO2}; V_{dr, T<1, 2>} = V_{FB/L_IN} - V_{Q_T<1, 2>}
5) Minimum value given is needed for regulator stability; application might need higher capacitance than the minimum.
6) Measured when V_{Q_LDO2} has dropped 100 mV from its nominal value obtained at V_{IN_LDO2} = 5.4 V.
7) External power transistor type: Fairchild KSH200.
8) Permanent operation of the device above 150 °C degrades lifetime; please refer to quality information.
Data Sheet
21
Rev. 1.1, 2007-11-08