VT5376 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
VT5376
STMicroelectronics
'VT5376' PDF : 31 Pages View PDF
VT5376
Typical application
8.1
Overall 2.4 GHz mouse power consumption example
Assumptions
● VCSEL, MCU and 2.4 GHz Tx operate from 2.2 V
● MCU consumes 1 mA in running mode and 50 uA in standby mode. In no motion
period, it remains in standby until it receives an interrupt from the VT5376, indicating
that MOTION has been detected.
● 2.4 GHz Tx consumes 10 mA, but data is sent by bursts of 500 µs every 5 ms (that is
Nordic nRF2402).
● Maximum current is delivered to VCSEL (10 mA strobed).
● DCDC efficiency is 70%
● Ambient temperature
Table 10. Power supply and typical power consumption
Run
Total @Vbat (1.25 V)
4000 fps
18 mA
2000 fps
12 mA
1000 fps
9.3 mA
IDLE1
0.59 mA
IDLE2
0.29 mA
SLEEP
0.24 mA
Using STMicroelectronics battery life model, these values would enable the mouse to
operate for 12 months from two AA batteries in parallel.
Doc ID 13939 Rev 4
25/31
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