Texas Instruments TLV80xE/TLV81xE Low Power Voltage Supervisors
Texas Instruments TLV80xE/TLV81xE Low Power Voltage Supervisors are enhanced alternatives to the TLV803, TLV853, TLV809, LM809, TPS3809, and TLV810. These devices offer lower supply current for battery-powered applications, higher accuracy, wider temperature range, and lower power-on-reset (VPOR) for increased system reliability. The Texas Instruments TLV80xE/TLV81xE are low IQ (250nA typical, 1µA max) voltage supervisory circuits (reset ICs) that monitor VDD voltage level. These devices initiate a reset signal whenever supply voltage VDD drops below the factory programmed falling threshold voltage, VIT–. The reset output remains low for a fixed reset time delay tD after the VDD voltage rises above the rising voltage threshold (VIT+), which is equivalent to the falling threshold voltage (VIT-) plus hysteresis (VHYS).
These devices have integrated glitch immunity to ignore fast transients on the VDD pin. The low current consumption and high accuracy (±0.5% typical) make these voltage supervisors ideal for use in low-power and portable applications. The Texas Instruments TLV80xE/TLV81xE is specified to have the defined output logic state for supply voltages down to VPOR = 0.7V. These devices are available in an industry-standard 3-pin SOT-23 (DBZ) package, a 3-pin SC-70 (DCK) package, and a very compact X2SON (DPW) package.
Features
- Ensured RESET output for VDD = 0.7V to 6V
- 40µs, 10ms, 50ms, 100ms, 200ms, 400ms fixed time delays
- 250nA (typical) supply current (IDD)
- 1µA (maximum for VDD = 3.3V)
- Output topology
- TLV809E - push-pull, active-low
- TLV803E - open-drain, active-low
- TLV810E - push-pull, active-high
- Under voltage detection
- ±0.5% (typical) high accuracy
- 3V, 3.3V, 5V nominal voltage monitor
- 1.7V, 1.8V, 1.9V, 2.4V, 2.64V, 2.93V, 3.08V, 4.38V, 4.63V (VIT–)
- Package
- SOT-23-3 (DBZ) (with pin 1 = GND)
- SOT-23-3 (DBZ) (with pin 1 = RESET)
- SC-70 (DCK)
- X2SON-5 (DPW)
- –40°C to +125°C temperature range
- Pin-to-pin compatible with MAX803/809/810, APX803/809/810
Applications
- Applications using DSPs, microcontrollers, or microprocessors
- Electricity meters
- Portable/battery-powered equipment
- Set-top boxes and TVs
- Building automation
- Notebook/desktop computers, servers
Functional Block Diagram
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