Si8540
Si8540 is HIGH-SIDE CURRENT SENSE AMPLIFIER manufactured by Silicon Labs.
Features
- plete, unidirectional high-side current sense capability
- 0.2% full-scale accuracy
- +5 to +36 V supply operation
- 85 d B power supply rejection
- 90 µA max supply current
- 9 µA shutdown current
- Operating Temperature Range:
- 40 to +85 °C
- 5-pin SOT-23 package
- Ro HS-pliant
Applications
- Battery chargers
- Smart battery packs
- DC motor control
- Backup systems
- Current control applications
Description
The Si8540 is a unidirectional, 36 V (max), high-side current sense amplifier for use in applications requiring current monitoring and/or control. This device draws bias current from the high-side line to which it is attached, eliminating the need for an external supply. It measures current from 0.1 to 10 A by sensing the voltage across an external sense resistor (or PCB trace) from dc to 20 k Hz and can achieve measurement accuracies of 0.2% (typical) at full load. The device output...
