SGM899
Ultra-Small, Supervisory Circuit with Adjustable Sequencing
The SGM895/SGM896/SGM897/SGM898/SGM899 are ultra-small, low-power and high-accuracy micro-processor supervisory circuits with adjustable sequencing capability. Since the high-impedance detection input pin (IN) with a 0.5V threshold voltage is separated from the power supply, these devices provide great flexibility with adjustable thresholds by using an external resistive divider. Moreover, the delay time can be adjusted by an external capacitor connected to the CDELAY pin. The devices are suitable for some power-supply sequencing, reset sequencing and power-switching equipment.
When the input voltage at IN (VIN) exceeds the VTH threshold voltage (0.5V, TYP) and the ENABLE input is high (or nENABLE is low), the OUT is high (or nOUT is low). When VIN is lower than VTL (0.495V, TYP) or when the ENABLE input is low (or nENABLE is high), the OUT is low (or nOUT is high). The devices all have a capacitor-adjustable input delay time (tDELAY) between VIN greater than VTH and the output assertion. The SGM89_A has a capacitor-adjustable enable output delay time while the SGM89_P has a 350ns (TYP) fixed delay time.
All devices are available in ultra-small Green UTDFN-1.45×1-6AL and TSOT-23-6 packages.
High Voltage Threshold Accuracy:
+25℃: ±1%
-40℃ to +125℃: ±1.6%
Low Power Consumption: 2.1μA (TYP)
Operating Supply Voltage Range: 1.6V to 5.5V
Capacitor-Adjustable Delay
Active-Low Enable Input Option
Active-High Push-Pull Output Option
Available in Ultra-Small Green UTDFN-1.45×1-6AL and TSOT-23-6 Packages
Portable Equipment
Computers
μP Power Monitoring
Automotive Applications
Medical Equipment
Intelligent Instruments
