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MAX6457 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX6457 Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 15 page High-Voltage, Low-Current Voltage Monitors in SOT Packages 6 _______________________________________________________________________________________ Pin Description PIN MAX6457 MAX6458 MAX6459 MAX6460 NAME FUNCTION MAX6457: Open-Drain Monitor Output. OUT requires an external pullup resistor. OUT asserts low for VCC between 1.5V and 4V. OUT asserts low when VIN+ drops below VTH- and goes high after the timeout period (tTP) when VIN+ exceeds VTH+. MAX6458: Open-Drain Monitor Output. OUT requires an external pullup resistor. OUT asserts low for VCC between 1.5V and 4V. OUT asserts low when VIN+ drops below VTH- or when VIN- exceeds VTH+. OUT goes high after the timeout period (tTP) when VIN+ exceeds VTH+ and VIN- drops below VTH-. 1 1 — 1 OUT MAX6460: Open-Drain Monitor Output. OUT requires an external pullup resistor. OUT asserts low for VCC between 1.5V and 4V. OUT asserts low when VIN+ drops below VIN-. OUT goes high when VIN+ is above VIN-. — — 1 — OUTA Open-Drain Monitor A Undervoltage Output. OUTA requires an external pullup resistor. OUTA goes low when VIN+ drops below VTH- and goes high when VIN+ exceeds VTH+. OUTA also goes low for VCC between 1.5V and 4V. — — 5 — OUTB Open-Drain Monitor B Overvoltage Output. OUTB requires an external pullup resistor. OUTB goes low when VIN- exceeds VTH+ and goes high when VIN- drops below VTH-. OUTB also goes low when VCC drops below 4V. 2 2 2 2 GND Ground 33 33 IN+ Adjustable Undervoltage Monitor Threshold Input. Noninverting input for MAX6460. — 4 4 4 IN- Adjustable Overvoltage Monitor Threshold Input. Inverting input for MAX6460. 4— — — CLEAR Clear Input. For VIN+ > VTH+, drive CLEAR high to latch OUT high. Connect CLEAR to GND to make the latch transparent. CLEAR must be low when powering up the device. Connect CLEAR to GND when not used. — — — 5 REF Reference. Internal 2.25V reference output. Connect REF to IN+ through a voltage divider for active-low output. Connect REF to IN- through a voltage divider for active-high output. REF can source up to 100µA and sink up to 300nA. Leave REF floating when not used. REF output is stable with capacitive loads from 0 to 50pF or greater than 1µF. 55 66 VCC Supply Voltage |
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