STW4810CRAT/LF ST-Ericsson Inc, STW4810CRAT/LF Datasheet - Page 39

• Manufacturer Part Number: STW4810CRAT/LF
• Description: IC PWR MNGMNT MULTIMEDIA 84VFBGA
• Manufacturer: ST-Ericsson Inc

Specifications of STW4810CRAT/LF

• Applications: Processor
• Current - Supply: 170µA
• Voltage - Supply: 2.7 V ~ 4.8 V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 84-VFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional description
4.3.9
38/78
Thermal shut-down
A thermal sensor is used to monitor the die temperature.
●
●
Table 30.
Figure 11. Thermal threshold temperatures for ‘it_warn’ bit and VDDOK ball
VDDOK ball
Thermal warning threshold
Rising threshold
Falling threshold
Thermal shutdown threshold
Threshold
‘it_warn’ bit
As soon as the die temperature exceeds the thermal warning rising threshold, VDDOK
ball goes to “0” and ‘it_warn’ bit is set to “1” (SD MMC control register -
IC turns back VDDOK ball to “1” and ‘it_warn’ bit to “0” when the device temperature
drops below the thermal warning falling threshold of the thermal sensor.
A second thermal detection level, thermal shutdown threshold, puts all STw4810
supplies OFF, the supplies goes back to goes back to ON state when the temperature
is under the thermal shutdown threshold and after a new startup phase.
Thermal threshold values
Description
Rising warning
threshold
Min
134
117
149
Typ
140
123
155
Shutdown
threshold
Max
149
131
164
Table 18
All supplies
are turn “OFF”
Temperature
STw4810
). The
Unit
°C
°C
°C