Overview
The LP3470IM5X-3.08/NOPB is a micropower voltage supervisory circuit produced by Texas Instruments. This device is designed to monitor power supplies in microprocessor and digital systems, providing a reset signal when the supply voltage falls below a predetermined threshold. The LP3470 offers maximum adjustability for power-on-reset (POR) and supervisory functions, making it a versatile component for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23-5 |
| Reset Threshold Voltage (VRTH) | 3.08 V |
| Operating Voltage Range (VCC) | 0.5 V to 5.5 V |
| VCC Supply Current (ICC) | 16 µA (typical), 30 µA (maximum) |
| Reset Time-Out Period | Programmable using an external capacitor |
| Reset Output | Open-drain N-channel MOSFET switch |
| Operating Temperature Range | -40°C to +85°C |
| Junction Temperature (TJmax) | 125°C |
| Power Dissipation (TA = 25°C) | 300 mW |
| ESD Rating | 2 kV (Human Body Model) |
Key Features
- Tiny SOT-23-5 package
- Open-drain reset output
- Programmable reset time-out period using an external capacitor
- Immune to short VCC transients
- ±1% reset threshold accuracy over temperature
- Low quiescent current (16 µA typical)
- Reset valid down to VCC = 0.5 V
Applications
- Critical microprocessor and microcontroller power monitoring
- Intelligent instruments
- Computers
- Portable and battery-powered equipment
Q & A
- What is the primary function of the LP3470IM5X-3.08/NOPB? The primary function is to monitor power supplies in microprocessor and digital systems, providing a reset signal when the supply voltage falls below a predetermined threshold.
- What is the reset threshold voltage for the LP3470IM5X-3.08/NOPB? The reset threshold voltage is 3.08 V.
- What package type does the LP3470IM5X-3.08/NOPB come in? It comes in a SOT-23-5 package.
- How is the reset time-out period programmed? The reset time-out period is programmable using an external capacitor.
- What is the operating temperature range for the LP3470IM5X-3.08/NOPB? The operating temperature range is -40°C to +85°C.
- What is the typical VCC supply current for the LP3470IM5X-3.08/NOPB? The typical VCC supply current is 16 µA.
- Is the LP3470IM5X-3.08/NOPB immune to short VCC transients? Yes, it is relatively immune to short duration negative-going VCC transients.
- What is the ESD rating for the LP3470IM5X-3.08/NOPB? The ESD rating is 2 kV (Human Body Model).
- What type of reset output does the LP3470IM5X-3.08/NOPB have? It has an open-drain N-channel MOSFET switch reset output.
- What are some common applications for the LP3470IM5X-3.08/NOPB? Common applications include critical microprocessor and microcontroller power monitoring, intelligent instruments, computers, and portable and battery-powered equipment.
