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UM1691 数据表(PDF) 13 Page - STMicroelectronics |
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UM1691 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 41 page  DocID025486 Rev 2 13/41 UM1691 General description 41 4.2.1 Charge pump The L6470 device uses an internal charge pump for driving correctly the integrated MOSFETs, a voltage higher than the motor power supply. The charge pump is obtained through an oscillator and few external components. Figure 8. Charge pump circuitry Table 3. L6470 recommended operating conditions Symbol Parameter Test condition Value Unit VDD Logic Interface supply voltage 3.3 V VS Motor supply voltage VSA = VSB = VS 8 ÷ 45 V VOUT_diff Differential between voltage VSA, OUTI1A, OUT2A, PGND and VSB, OUT1B, OUT2B, PGND pins VSA = VSB = VS Up to 45 V VREG in Logic supply voltage VREG internal 3 V VADC Integrated ADC input voltage range (ADCIN pin) 0 ÷ VREG V |
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