SP40T datasheet(13/71 Pages) INFINEON

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Data Sheet

Revision1.1

2020-05-14

SP40T

Tire Pressure Monitoring Sensor

Specification

2.3.9

Supply Currents

Table 2-12 Supply Currents at 3.0V supply voltage

Parameter

Symbol

Values

Unit

Note or Test Condition Number

Min.

Typ.

Max.

Supply current in

power down state1)

1) PP0, PP1, PP2, PP3 not connected

IPWD_3V

245

540

+25°C

21.1

8.5

µA

+125°C

21.2

0.15

µA

-40°C

21.3

Supply current in idle

state (CPU gated off)

IIDLE_3V

280

400

µA

+25°C

21.4

400

µA

+125°C

21.5

280

µA

-40°C

21.6

Supply current in run

state2)

2) Measured while code is running from flash, executing a mix of read/write operations on retention RAM, SFRs and RAM

IRUN_3V

0.85

1.05

+25°C

21.7

0.95

+125°C

21.8

0.83

-40°C

21.9

Supply current at

thermal shutdown3)

3) ITSD is the always ON current. Average current for clocked operation is ITSD_avg=IPWD+(ITSD-IPWD)*2.9/16/Interval_Mul_16ms

ITSD_3V

116

µA

+125°C

21.10

110

µA

-40°C

21.11

LF-receiver supply

current in LF carrier

detection mode

(digital filter off)4)

4) The LF-receiver supply currents at each temperature are measured by substracting the power down current with LF-

Receiver being turned off from the power down current with LF-Receiver being activated in the specific mode.

ILFCD_3V

3.3

µA

+25°C

21.12

µA

+125°C

21.13

3.5

µA

-40°C

21.14

LF-receiver supply

current in LF carrier

detection mode

(digital filter on)4)

ILFCDFilter_3V

µA

+25°C

21.15

µA

+125°C

21.16

µA

-40°C

21.17

LF-receiver supply

current in LF data

reception mode4)

ILF_3V

3.85

µA

+25°C

21.18

µA

+125°C

21.19

µA

-40°C

21.20

Supply current at RF-

transmission

CW or FSK

CPU off5)

IRFTX_3V

5.5

315MHz, -40...+125°C

21.21

5.7

434MHz, -40...+125°C

21.22

Supply current during

RF interframe timing

(CPU off)

ITXIF_3V

2.1

µA

+25°C

21.24

µA

+125°C

21.25

1.8

µA

-40°C

21.26

Supply current in

deep idle state

IDEEP_3V

2.1

µA

+25°C

21.27

100

µA

+125°C

21.28

1.7

µA

-40°C

21.29

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