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MAX17823H Datasheet(PDF) 44 Page - Maxim Integrated Products |
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MAX17823H Datasheet(HTML) 44 Page - Maxim Integrated Products |
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44 / 129 page  Power-On Sequence Once VSHNDL > 1.8V, the regulator is enabled. After VAA reaches 3V (typ), the POR signal is deasserted, the oscillators enabled, and the HV charge pump enabled. Once the HV charge pump is stable, the logic is enabled. The device is fully operational (standby mode) within 1ms from the time communication is first received in the shutdown mode. The power- on sequence is shown in Figure 20. Figure 20. Power-On Sequence VOLTAGE APPLIED TO DCIN DIE TEMP > 145°C VAA < VPOR_RISING REGULATOR DISABLED 32kHz OSCILLATOR ENABLED CHECK DIE TEMPERATURE CHECK VAA CHARGE PUMP AND DIGITAL LOGIC ENABLED CHARGE PUMP SETTLED 470µsec DELAY 3ms DELAY REGULATOR ENABLED ALRTRST BIT SET CHECK SHDN\ SHDN\ ACTIVE POR CLEARED REGULATOR DISABLED DIE TEMP > 145°C SHDN\ ACTIVE SHUTDOWN MODE STANDBY MODE YES YES MAX17823H 12-Channel, High-Voltage Data-Acquisition Systems www.maximintegrated.com Maxim Integrated │ 44 |
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