In today's power-sensitive electronic systems, precise voltage monitoring plays a critical role in ensuring safe operation and system stability. 

The AX70XXA-1 series from AXTEK Technology offers an efficient and dependable solution with its ultra-low power, 3-terminal voltage detectors, available in multiple fixed threshold voltages ranging from 2.2V to 5.0V.

Manufactured using advanced CMOS technology, the AX70XXA-1 integrates a high-accuracy voltage reference, comparator, hysteresis circuitry, and open-drain output driver in a compact form. 

With typical standby current as low as 3μA, this device is ideal for battery-powered and standby-critical applications.

Key Features

• Wide Operating Voltage: 1.5V to 30V

• Fixed Detection Voltages: 2.2V ~ 5.0V

• Low Standby Current: 3μA typical

• ±3% Detection Accuracy

• Built-in Hysteresis to Prevent Oscillation

• Open-Drain NMOS Output (Active Low)

• Multiple Package Options: SOT23-3, SOT23-5, SOT89, TO92

Typical Applications

• Battery Voltage Monitoring

• Power-Fail Detection

• Microcontroller Reset Circuits

• Non-volatile Memory Protection

• DC Power Supply Supervision

Flexible Customization

If your system requires a detection voltage not listed in our standard product table, the AX70XXA-1 can easily be configured using external resistor dividers or diode voltage shifting to meet custom threshold needs.

Why Choose AXTEK’s AX70XXA-1?

With ultra-low power consumption, robust thermal and ESD protection, and precision voltage detection, the AX70XXA-1 enhances the safety and reliability of your electronics. It's the perfect choice for developers building smart portable devices, energy-efficient controllers, and industrial monitoring equipment.

How to Choose the Right Model

1. Confirm Your System Voltage:
   Choose a detector with a detection voltage slightly below your operating voltage for accurate undervoltage protection.

2. Select the Right Package:

• SOT23-3 / SOT23-5: Ideal for compact PCBs

• SOT89: Suitable for higher power dissipation

• TO92: For through-hole, cost-effective designs

3. Check Load Current Requirements:
   All models support up to 50mA output sink current; suitable for driving LEDs or logic inputs.

4. Need Custom Threshold?
   If your system requires a detection voltage not listed, you can use external resistors or diodes to shift the threshold voltage accordingly.

Contact Us for Samples or Technical Support：sales@axtekic.com