STV-376-E01 STMICROELECTRONICS [STMicroelectronics], STV-376-E01 Datasheet - Page 24

• Manufacturer Part Number: STV-376-E01
• Description: Ultra-low power laser motion sensor for laser mouse applications
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Typical application
8.1
Table 8.
24/30
Total @Vbat (1.25 V)
Overall 2.4 GHz mouse power consumption example
Assumptions
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Power supply and typical power consumption
Using STMicroelectronics battery life model, these values would enable the mouse to
operate for 12 months from two AA batteries in parallel.
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
4000 fps
18 mA
2000 fps
12 mA
Run
1000 fps
9.3 mA
0.59 mA
IDLE1
0.29 mA
IDLE2
0.24 mA
SLEEP
VT5376