TLE4471_09 Datasheet, PDF (11/24 Pages) Infineon Technologies AG – Triple Voltage Regulator

TLE 4471
Table 4
Characteristics (cont’d)
V_I = 13.5 V; T_j = -40 °C < T_j < 125 °C
Parameter
Symbol
Limit Values
Unit Measuring Condition
Min. Typ. Max.
Reset delay charging I_{DR, ch}
2
46
µA V_DR = 1 V
current
Reset delay
discharge current
I_{DR, dis}
60 120 160 mA V_DR = 1 V
Upper reset timing
threshold
V_{DR, dt}
0.9 1.8 2.7 V –
Lower timing
threshold
V_{DR, st}
0.25 0.4 0.65 V –
Reset delay time
t_dr
Reset reaction time t_rr
Watchdog
35 50 70
0.5 – 3
ms C_R = 100 nF
µs C_R = 100 nF
Watchdog input
R_W
pull-down resistor
5
15 40 kΩ –
Watchdog delay
charging current
I_{DW, ch}
2
46
µA V_DW = 1 V; V_DR = 2.7 V
Watchdog upper
timing threshold
V_{DW, dt}
1.5 1.9 2.5 V –
Watchdog lower
timing threshold
V_{DW, st}
0
30 200 mV –
Watchdog trigger
t_wp
pulse interval
35 50 70 ms C_DW = 100 nF
Reference Output REF2
Voltage divider ratio V_REF2
Output impedance R_REF2
Output clamp voltage –
49.5 50
10 –
–
–
50.5
20
4.5
% of –
V_Q2
kΩ –
V–
Data Sheet
11
Rev. 1.6, 2009-02-03