TLE6711_07 Datasheet, PDF (17/25 Pages) Infineon Technologies AG – Multifunctional Voltage Regulator and Watchdog

TLE 6711
Circuit Description
Electrical Characteristics: Reference Input; R
(Oscillator; Timebase for Boost- and Buck-Converter, Reset and Watchdog)
V_CC = 4.75 V to 5.25 V; V_Boost = 8 V to 35 V, T_j = -40 °C to +150 °C, R_R = 47 kΩ; all voltages with respect to ground,
positive current flowing into pin (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
4.5.27
4.5.28
4.5.29
4.5.30
Voltage on pin R
V_R
Oscillator frequency
f_OSC
Oscillator frequency
f_OSC
Cycle time for watchdog and reset t_CYL
timing
1.3
1.4
1.5
V
–
85
95
105 kHz T_j = 25 °C
75
–
115 kHz –
–
1.05 –
ms
t_CYL = 100/f_OSC
Electrical Characteristics: Reset Generator; RO
V_CC = 4.75 V to 5.25 V; V_Boost = 8 V to 35 V, T_j = -40 °C to +150 °C, R_R = 47 kΩ; all voltages with respect to ground,
positive current flowing into pin (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
4.5.31 Reset threshold;
V_CC decreasing/increasing
4.5.32 Reset low voltage
4.5.33 Reset low voltage
4.5.34 Reset high voltage
V_RT
4.50 4.65 4.75 V
V_ROL
V_ROL
V_ROH
–
0.2
–
0.2
V_CC - –
0.1
0.4
V
0.4
V
V_CC + V
0.1
V_RO H to L or L to H
transition;
V_RO remains low
down to V_CC > 1 V
I_ROL = 2 mA;
2.5 V < V_CC < V_RT
I_ROL = 0.2 mA;
1 V < V_CC < V_RT
I_ROH = 0 mA
4.5.35
4.5.36
4.5.37
Reset pull-up current
Reset Reaction time
Power-up reset delay time
I_RO
–
240 –
µA
0 V < V_RO < 4 V
t_RR
50
100 150 µs
V_CC < V_RT
t_RD
–
64
–
t_CYL V_CC ≥ 4.8 V
Electrical Characteristics: Watchdog Generator; WDI
V_CC = 4.75 V to 5.25 V; V_Boost = 8 V to 35 V, T_j = -40 °C to +150 °C, R_R = 47 kΩ; all voltages with respect to ground,
positive current flowing into pin (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
4.5.38 H-input voltage threshold
4.5.39 L-input voltage threshold
4.5.40
4.5.41
Watchdog period
Start of reset;
after watchdog time-out
V_WDIH
V_WDIL
T_WD
t_SR
–
–
0.3 × –
V_CC
–
128
–
64
0.7 × V
–
V_CC
–
V
–
–
t_CYL V_CC ≥ 4.8 V
–
t_CYL V_CC ≥ 4.8 V
Data Sheet
17
Rev. 3.4, 2007-08-16