TLE7263E datasheet(17/63 Pages) INFINEON

17 / 63 page

TLE 7263E

Features

Data Sheet

Rev. 1.51, 2007-06-22

Continuous Timer Mode (CTM) for “Cyclic Wake Timer”

Upon start of the “cyclic wake timer” in Cyclic Wake Mode the operating mode might be

changed to “SBC Active Mode” by the microcontroller, e.g. in order to transmit data via

the CAN or LIN transceiver. In this case the timer continues running with the selected

period started in Cyclic Wake Mode. This behavior guarantees the periodic generation

of a wake-up signal at the WKO pin, even in case of a mode switch. However, this

provides that the time spent in SBC Active Mode is not exceeding the selected period.

Should a time-out (end of selected period) occur in SBC Active Mode before the Cyclic

Wake Mode is re-entered, the SBC will generate an interrupt signal at its WKO pin if the

CTM feature is enabled via the respective SPI bit (see Figure 11).

When the CTM feature is set in the SPI, a wake-up event at the CAN bus in “SBC Active

CAN Sleep” mode or at the LIN bus in the “SBC Active LIN Sleep” mode results in

switching WKO “low” in addition to switching the RxD to “low”.

4.8

Dual Low Dropout Voltage Regulator

The dual low dropout voltage regulator integrated in the TLE 7263E is able to drive

external as well as internal loads, e.g. CAN-circuit supplied via

CC2, even in case of a

bus short circuit. Its output voltage tolerance is better than

±2%. The maximum output

current for external loads is limited to 150 mA (

CC1), e.g. for microcontroller supply, and

150 mA (

CC2) for internal CAN module and, e.g. for external sensor supply. The two

voltage regulator outputs are protected against overload and overtemperature. The

thermal pre-warning flag might be used by the microcontroller to reduce the power

dissipation of the TLE 7263E by switching off functions of minor priority until the

temperature threshold of the thermal shutdown is reached.

An external reverse current protection is required at the pin

S to prevent the output

capacitor from being discharged by negative transients or low input voltage.

A capacitor of 10

µF at the supply voltage input VS buffers the input voltage. In

combination with the required reverse polarity diode this prevents the device from

detecting power down conditions in case of negative transients on the supply line.

Stability of the output voltage is guaranteed for output capacitors

Q ≥ 100 nF,

nevertheless it is recommended to use capacitors

Q ≥ 10 µF to buffer the output voltage

and therefore improve the reset behavior at input voltage transients.

TLE7263E bảng dữ liệu(PDF) 17 Page - Infineon Technologies AG

TLE7263E bảng dữ liệu(HTML) 17 Page - Infineon Technologies AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

bảng dữ liệu tải về

Link URL