TLE4278G_07 Datasheet, PDF (8/20 Pages) Infineon Technologies AG – 5-V Low Drop Fixed Voltage Regulator Output voltage tolerance ≤ ±2%

TLE 4278 G
Table 4
Electrical Characteristics (cont’d)
V_I = 13.5 V; -40 °C ≤ T_j ≤ 125 °C (unless otherwise specified)
Parameter
Symbol Limit Values Unit Test Condition
Min. Typ. Max.
Upper timing threshold V_DU
Lower reset timing
threshold
V_DRL
1.5 1.9 2.3 V –
0.2 0.3 0.4 V –
Delay time
t_rd
Reset reaction time t_rr
Watchdog
12 20 28 ms C_D = 47 nF
0.4 1.0 2.0 µs C_D = 47 nF
Activating threshold V_WADJ,th
Current ratio
I_Q/I_WADJ
Slew rate
dV_WI/dt
Watchdog low voltage V_WOL
Watchdog high voltage V_WOH
Watchdog pull-up
R_WO
Charge current
I_D,wc
Discharge current
I_D,wd
Upper timing threshold V_DU
Lower watchdog
timing threshold
V_DWL
1.28
650
5
–
4.5
20
2
0.6
1.5
0.5
1.35
720
–
0.2
–
30
5
1.3
1.9
0.7
1.45
800
–
0.4
–
45
8
2.0
2.3
0.9
V Voltage at WADJ
– I_Q ≤ 10 mA
V/µs From 20% up to 80% V_Q
V R_ext > 10 kΩ to V_Q
V–
kΩ Internal connected to V_Q
µA V_D = 1.0 V
µA V_D = 1.0 V
V–
V–
Watchdog output
pulse period
T_WD,p 42 60 80 ms C_d = 47 nF
Watchdog output low t_WD,l
time
7
13 19 ms V_Q > V_RT
Watchdog trigger time T_WI,tr
35 47 61 ms C_d = 47 nF
1) Measured when the output voltage V_Q has dropped 100 mV from the nominal value.
Data Sheet
8
Rev. 1.4, 2007-02-19