IFX91041 Просмотр технического описания (PDF) - Infineon Technologies

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IFX91041

1.8A DC/DC Step-Down Voltage Regulator 5.0V, 3.3V or Adjustable Output Voltage

Infineon Technologies 

IFX91041

Module Enable and Thermal Shutdown

6

Module Enable and Thermal Shutdown

6.1

Description

With the enable pin the device can be set in off-state reducing the current consumption to less than 2µA.

The enable function features an integrated pull down resistor which ensures that the IC is shut down and the power

switch is off in case the pin EN is left open.

The integrated thermal shutdown function turns the power switch off in case of overtemperature. The typ. junction

shutdown temperature is 175°C, with a min. of 160°C. After cooling down the IC will automatically restart

operation. The thermal shutdown is an integrated protection function designed to prevent IC destruction when

operating under fault conditions. It should not be used for normal operation.

6.2

Electrical Characteristics Module Enable, Bias and Thermal Shutdown

Electrical Characteristics: Enable, Bias and Thermal Shutdown

VS = 6.0 V to 40 V, Tj = -40 °C to +125 °C, all voltages with respect to ground (unless otherwise specified)

Pos. Parameter

Symbol

Limit Values

Unit Conditions

Min. Typ. Max.

6.2.1 Current Consumption,

shut down mode

Iq,OFF

–

0.1

2

µA

VEN = 0.8V;

Tj < 105°C; VS = 16V

6.2.2 Current Consumption,

Iq,ON

–

–

7

mA VEN = 5.0V; ICC = 0mA;

active mode

VS = 16V

FB connected to VOUT

6.2.3 Current Consumption,

Iq,ON

–

–

10

mA VEN = 5.0V; ICC = 1.8A;

active mode

VS = 16V

FB connected to VOUT1)

6.2.4 Enable high signal valid

VEN,lo

3.0

–

–

V

–

6.2.5

6.2.6

Enable low signal valid

Enable hysteresis

VEN,hi

–

VEN,HY

50

–

0.8

V

–

200

400

mV

1)

6.2.7 Enable high input current IEN,hi

–

–

30

µA

VEN = 16V

6.2.8

6.2.9

Enable low input current IEN,lo

Over temperature shutdown Tj,sd

–

0.1

1

µA

VEN = 0.5V

160 175 190 °C

1)

6.2.10 Over temperature shutdown Tj,sd_hyst –

hysteresis

15

–

K

1)

1) Specified by design. Not subject to production test.

Data Sheet

10

Rev. 1.02, 2010-02-23

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