- Miniature SOT23-5 package
- Open-drain reset output^
- The programmable reset timeout period uses an external capacitor
- Immune short VCCTransients
illustrate
The LP3470 is a microCMOS voltage monitoring circuit design, power supply monitoring microprocessor (μP) and other digital systems. It provides maximum adjustable power-on reset (POR) and supervisory functions. It resets threshold voltages (V) in the following six standard standardsRTH）Options: 2.63V, 2.93V, 3.08V, 3.65V, 4.00V, 4.38V and 4.63V. If required for voltage options such as 2.4V and 5.0V, please contact your national semiconductor representative.
The LP3470 asserts V when the signal is resetCCThe supply voltage is below the reset threshold. The reset timeout period adjustment uses an external capacitor. It remains V after resetCCThe time interval for the threshold voltage rise (programmed by an external capacitor) has been exceeded and asserted.
The device is available in a tiny SOT23-5 package.
Main specifications
- ± temperature above 1% reset threshold accuracy
- Standard reset threshold voltages: 2.63V, 2.93V, 3.08V, 3.65V, 4.00V, 4.38V and 4.63V
- Self-reset threshold voltage: voltage between 2.4V and 5.0V, please contact other national semiconductor representatives
- Very Low Quiescent Current (16μA Typical)
- ^Ensure that the reset effectively drops to VCC= 0.5V
apply
- Critical μP and μC power monitoring
- Smart meters
- Computer
- Portable/battery-powered devices
|