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STV-376-E01 bảng dữ liệu(PDF) 7 Page - STMicroelectronics |
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STV-376-E01 bảng dữ liệu(HTML) 7 Page - STMicroelectronics |
7 / 30 page VT5376 Power supply options and power consumption 7/30 2 Power supply options and power consumption The sensor includes a DCDC controller to supply the laser / LED. This allows the overall sensor system to operate from a single AA or AAA battery supply voltage (from 1.6V down to 1V), allowing for a simple and low power / low cost system design. Two power supply schemes can be used. 2.1 Low cost application The internal DCDC controller and voltage regulators are used so that the overall application can be supplied from a single AA/AAA battery cell, without the need for an external step-up convertor device. This approach is extremely economical. Note: 1 DCDC efficiency from single battery cell to Vtop (typical 2.2V) is around 70%. 2 Maximum load on Vtop is 25mA 2.2 External supply application In this instance, the internal DCDC controller and voltage regulators are turned off and bypassed. The sensor then needs to be supplied with a single regulated 1.8V +/- 0.1V. Table 2. Typical power supply and power consumption Run IDLE1 IDLE2 SLEEP 4000 fps 2000 fps 1000 fps Total @ ITop (chip + Laser/LED) 5.8 mA 3.5 mA 2.4 mA 0.3 mA 0.15 mA 0.1 mA Total chip @Vbat 0.04 mA 0.04 mA 0.04 mA 0.04 mA 0.04 mA 0.04 mA Table 3. Power supply and typical power consumption Run IDLE1 IDLE2 SLEEP 4000 fps 2000 fps 1000 fps Total @Vtop/Vbat/Dvdd/ Avdd (1.8V) Chip + Laser/LED 5.8 mA 3.5 mA 2.4 mA 0.3 mA 0.15 mA 0.1 mA |
Số phần tương tự - STV-376-E01 |
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Mô tả tương tự - STV-376-E01 |
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