● High Accuracy Detection: ±1% (TYP)

● Low Power Consumption: 0.3μA (TYP) at VIN = 1V

● Detection Voltage Range: 0.8V to 5V (0.1V Increments)

● Operating Voltage Range: 1V to 6V

● Detection Voltage Temperature Coefficient: ±40ppm/℃ (TYP)

● N-Channel Open-Drain Output

● Pin Function:

   Power Supply Separation

   Adjustable Release Delay Time (SGM890B Only)

● -40℃ to +125℃ Operating Temperature Range

● Available in a Green SOT-23-5 Package

The SGM890B and SGM891B are low power consumption voltage detectors with high accuracy detection. These miniature devices offer tremendous flexibility with an adjustable threshold that is available from 0.8V to 5V with 0.1V increments. The SGM890B has an external capacitor-adjustable time delay. These devices are ideal for use in power-supply sequencing, reset sequencing, and power-switching applications.

The sense pin (VSEN) is separated from the power supply pin, so it allows the IC to monitor the other power supply.

The SGM890B and SGM891B can maintain the state of detection even when the monitored power supply voltage drops to 0V, due to the separated power supply.

Moreover, SGM890B’s release delay time can be adjusted by the external capacitor which is connected to the CD pin. Consequently delay time can be set to more than 1s when the delay capacitor (CD) is 1μF. The VOUT pin is available in an N-channel open-drain output with active-low reset.