MAX6870/MAX6871 Programmable Power Supply Features and Pin Functions and Application Circuits - Power Supply Circuits - Circuit Diagram

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MAX6870/MAX6871 Programmable Power Supply Features, Pin Functions, and Application Circuits

1 Features and pin functions MAX6870/MAX6871 pdf, MAX6870/MAX6871 datasheet
1.1 Features ● 6-way (MAX6870) or 4-way (MAX6871) programmable input voltage detector:
1 high voltage input (+1.25 v~+7.625 V or +2.5 V to +13.2V threshold);
1 bipolar voltage input (±1.25 V~±7.625 V or ±2.5V~±15.25 V threshold);
4-way (MAX6870) or two-way (MAX6871) positive voltage input (+0.5 V~+3.05 V or +1 V~+5.5 V threshold);
● 4 general logic inputs;
● 2 programmable watchdog timers;
● 8-way (MAX6870) or five-way (MAX6871) programmable outputs: high active, low active, open drain, weak pull-up, push-pull, charge pump timing delay range of 25μs~1600 ms;
● 10-bit internal ADC monitors input voltage, detector and two auxiliary inputs;
● State control and manual reset control;
● Internal 1.25 V reference or external reference input;
● 4 KB internal user EEPROM;
● Compatible with I2C/SMBus serial programming/communication interface;
● ±1% threshold accuracy.
1.2 pin function
The MAX6870/MAX6871 are available in a 32-pin thin QFN lead-free package. The function of each pin is shown in Table 1.

In order to reduce the influence of interference, the high frequency noise is bypassed between the monitoring voltage and ground through a 0.1 μF capacitor, bypassed by a 1μF capacitor between ABP, DBP and ground, and ABP and DBP are internally generated voltages. It should not be used to supply power to external circuits.