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Ultra-low-power voltage detectors for monitor battery, power-supply and system voltages

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The PT7M62xx serials of ultra-low-power voltage detectors monitor battery, power-supply and system voltages. Each circuit includes a precision bandgap reference, a comparator, internally trimmed resistor networks that set specified trip thresholds, and an internal 5% threshold hysteresis circuit. Output is asserted when VCC rises above VTH+ (VTH+ = VTH-×1.05) and remains asserted until VCC falls below the internal VTH-. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from +1.8V to +5V in 100mV increments. The series are voltage detectors with a propagation delay of 20μs(VCC rise).
The family is available with three output stage options:

  • Push-pull with active-low output, push-pull with active-
  • High output, and open drain with active-low output.


  •  Highly precision: -0.7%~+0.5% (25°C); ±1%(-10°C to 60°C, for PT7M62xxxx); ±1.5%(-10°C to 60°C, for PT7M62xxxxB)
  • Low power consumption: 0.9uA @ 3V Vcc
  • Detect voltage range: 1.8 to 5V in 100mV increments
  • Operating voltage range: 1.2V ~ 5.5V
  • Output configuration: N-channel open drain or CMOS
  • Special threshold voltage product according to customer need

Product Specifications

Product Parameters

Fixed Detect Voltages (V) 1.8 to 5 V
Adjustable Detect Voltage Reference Voltage (V) N/A V
Number of Channels 1
Minimum Operating Voltage (V) 1.2 V
Maximum Input Voltage (V) 5.5 V
Quiescent Current (µA) 1 µA
Typical Time Delay (µs) 0.05 µs
Reset Period (ms) 0.2 ms
RESET Output (Active High) No (Active High)
RESET Output (Active Low) Yes (Active Low)
Manual RESET No
Watchdog No
Watchdog Time (s) None s
Power Fail Comparator Threshold (V) None V
Reset Output Topology Open-Drain
Ambient Temperature Range  (°C) -40 to 85 °C

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