GXSC Voltage, Current, and Temperature Monitor Replaces LTC2991 for Power Supply Voltage Detection

The power supply primarily provides continuous and stable energy for the operation of the entire system, while the stability of the power supply voltage directly determines the working state of the electronic system. It is necessary to monitor the output voltage of the power supply, bus voltage, and the power supply voltage of key modules in real time, promptly report voltage anomalies, and trigger protective mechanisms. The GXSC‘s 8-channel IIC voltage, current, and temperature monitor can replace the LTC2991 for power supply voltage detection, ensuring stable operation of complex electronic systems.

The GXSC monitor is a product designed to monitor PCB system temperature, voltage, and current. The chip features an IIC serial interface, enabling eight monitors to independently measure eight external single-ended voltages. They can also be paired to measure four differential voltages, currents, or remote BJT temperatures, while simultaneously monitoring internal temperature and power supply voltage (VCC). The device minimizes the required support components and board area by utilizing a built-in 10ppm/°C reference. Optional PC address and function configurations allow the chip to be flexibly applied in systems requiring temperature, voltage, or current data measurements. The device supports PWM output proportional to the temperature of BJTs connected to V7 and V8, enabling fan or heater control.

With its performance advantages, the GXSC monitor is ideal for systems requiring resolution below millivolt voltages, 1% current measurements, and 3.5°C temperature accuracy—or any combination of these three.

GXSC Monitor Product Advantages

1. Small size, low power consumption, with a built-in 14-bit ADC

2. High sensitivity, with a temperature resolution of 0.06°C, a single-ended voltage resolution of 305uV, and a differential voltage resolution of 19uV

3. Built-in series resistance cancellation function with remote current and temperature measurement modes

4. Supports PWM output proportional to the remote BJT temperature for fan or heater control

5. The I2C address is configurable, supporting up to 8 devices sharing the bus

6. The working modes of each monitor can be independently configured, enabling simultaneous measurement of voltage, current, and temperature with a single unit

7. Utilizes a 16-pin MSOP package with an operating temperature range of -55°C to 125°C

8. Supports controllers such as FPGA, MCU, or DSP to access via IC interface

9. Features a 16-pin MSOP package with an operating temperature range of -55°C to 125°C