# ACE301A: Ultra-Small High-Precision Low Voltage Detector

## Description
A series of high-precision low voltage detectors utilizing CMOS technology. Available in NMOS open-drain and CMOS output forms.

## Features
️· Low Current Consumption: 0.9μA @ 3.5V (Typ.)
️· Precision: ±2.0% detection voltage accuracy
️· Operating Voltage: 0.7V ~ 6.0V
️· Hysteresis: -V DET ×5 ％
️· Detection Voltage Range: 0.9V ~ 2.0V (10mV step)
️· Output Types: NMOS open-drain (Active Low), CMOS (Active Low)

## Applications
️· Memory battery back-up circuits
️· Power-on reset circuits
️· Power failure detection
️· Portable equipment power monitoring (notebooks, cameras, PDAs, cell phones)
️· Constant voltage power monitors for cameras and communication devices
️· Microcomputer power monitoring and CPU reset

## Absolute Maximum Ratings
️· Power Supply Voltage (VDD): VSS - 0.3 ~ VSS + 8 V
️· Output Voltage (VOUT): VSS - 0.3 ~ VSS + 8 V
️· Power Dissipation: 400mW (SOT-23-3), 600mW (SOT-89-3), 500mW (TO-92)
️· Operating Temperature: -40°C ~ 85°C
️· Storage Temperature: -40°C ~ 25°C
️· Soldering Temperature: 260°C, 10s

## Package & Pinout (SOT-23-3)
️· Pin 1: VDD (Voltage Input)
️· Pin 3: VOUT (Voltage Detection Output)
️· Pin 3: VSS (Ground)

## Electrical Characteristics
️· Detection Voltage Range: -V DET (S) × 0.98 to -V DET (S) × 1.02
️· Hysteresis Width: 0.02× -V DET (S) to 0.08× -V DET (S)
️· Current Consumption: 1.0μA to 2.0μA @ VDD = -V DET + 0.5V
️· Temperature Coefficient: ±120 to ±360 ppm°C
️· Delay Time: 200μs

## Function Description
️· The detector outputs the input voltage when VDD is greater than the release voltage.
️· When VDD falls below the detection threshold, the output goes low.
️· High impedance exists at the output with the NMOS configuration.

## Notes
️· Not intended for use in life support systems without written approval.
️· Refer to the manufacturer's website ([http://www.ace-ele.com/](http://www.ace-ele.com/)) for detailed specifications and application information.