SGM823-RXN5G/TR

SGM823 is a complete microprocessor supervisory device integrating reset, watchdog, and manual reset functions in a SOT-23-5 package. This integration significantly improves system reliability compared to designs using discrete ICs or components. The SGM823 also features excellent transient immunity, ignoring fast VCC transients. The device includes an active-low push-pull reset output (nRESET), which can be asserted by a logic low on the manual reset input (nMR), a watchdog timeout event, or low VCC voltage. The nRESET output remains in the correct logic state even when VCC drops to 1V. The SGM823 offers four fixed VCC reset threshold voltages. It is available in a green SOT-23-5 package with an operating junction temperature range of -40°C to +125°C.

Applications

• Computers
• Portable devices
• Automotive equipment
• Smart instruments
• Critical microprocessor supply monitoring

Key features

• Ultra-low supply current: < 1μA (typical)
• Precision supply voltage monitoring
• SGM823-L reset threshold voltage: 4.63V
• SGM823-T reset threshold voltage: 3.08V
• SGM823-S reset threshold voltage: 2.93V
• SGM823-R reset threshold voltage: 2.63V
• nRESET guaranteed valid at VCC = 1V
• Push-pull nRESET output
• Reset pulse width: 200ms (typical)
• Debounced TTL/CMOS compatible manual reset input
• Watchdog timer with 1.6s timeout (typical)
• Full temperature range specifications
• Power supply transient immunity
• No external components required
• Operating temperature range: -40°C to +125°C
• Green SOT-23-5 package