TLE8201R datasheet(9/45 Pages) INFINEON

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TLE 8201R

Block Description and Electrical Characteristics

Data Sheet Rev. 2.0

2006-06-07

Block Description and Electrical Characteristics

4.1

Power Supply

4.1.1

General

The TLE 8201R has two power supply inputs: All power drivers are connected to the

supply voltage

S which is connected to the automotive 12 V board-net. The internal

logic part is supplied by a separate Voltage

CC = 5 V.

The advantage of this system is that information stored in the logic remains intact in the

event of short-term failures in the supply voltage

S. The system can therefore continue

to operate after

S has recovered, without having to be reprogrammed.

A rising edge on

CC triggers an internal Power-On Reset (POR) to initialize the IC at

power-on. All data stored internally is deleted, and the outputs are switched to high-

impedance status (tristate).

4.1.2

Sleep-Mode

The TLE 8201R can be put in a low current-consumtion mode by setting the input INH

to LOW. The INH pin has an internal pull-down current source. In sleep-mode, all output

transistors are turned off and the SPI is not operating. When enabling the IC by setting

INH from L to H, a Power-On Reset is performed as described above.

4.1.3

Reverse Polarity

The TLE 8201R requires an external reverse polarity protection. The gate-driver

(charge-pump output) for an external n-channel logic-level MOS-FET is integrated. The

gate voltage is provided at pin GO which should be connected as shown in the

application diagram.

4.1.4

Electrical Characteristics

8 V <

S < 20 V; 4.75 V < VCC < 5.25 V; INH = High; all outputs open;

-40

°C < T

j < 150 °C; unless otherwise specified

Pos.

Parameter

Sym-

bol

Limit Values

Unit Conditions

min.

typ.

max.

Current Consumption

4.1.1

Supply current

–3.0

7.0

–

4.1.2

Logic supply current

–

SPI not active

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