Overview
The Texas Instruments LP3470M5-3.08/NOPB is a micropower voltage supervisory circuit designed to monitor voltages within 1% of the reset threshold over temperature. This device is part of the LP3470 series and is packaged in a 5-pin SOT-23 package. It is ideal for use in battery-powered microprocessor and other digital systems, providing maximum adjustability for power-on-reset (POR) and supervisory functions. The LP3470M5-3.08/NOPB is known for its low quiescent current and ability to operate over a wide voltage range, making it suitable for various applications requiring reliable power monitoring.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP3470M5-3.08/NOPB |
| Package | SOT-23-5 |
| Operating Temperature Range | -20°C to 85°C |
| Monitored Voltage (Typ) | 3.08 V |
| Reset Threshold Accuracy | ±1% over temperature |
| Reset Time-Out Period | Programmable using an external capacitor |
| Output Driver Type / Reset Output | Active-low, Open-drain |
| Quiescent Current (Typ) | 16 µA |
| VCC (Min/Max) | 0.5 V / 5.5 V |
Key Features
- Simple Reset/Power-On Reset type
- 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
- Open-drain reset output
- Minimum supply voltage of 500 mV
Applications
- Critical microprocessor and microcontroller power monitoring
- Intelligent instruments
- Computers
- Portable and battery-powered equipment
- Satellite navigation
- Household appliances
- Power communication systems
- Rechargeable batteries
- WiFi routers
- Urban rail transit weak current power monitoring
- Transformer load monitoring equipment
- Refrigeration
- Military communications
- Utility meters
Q & A
- What is the primary function of the LP3470M5-3.08/NOPB?
The primary function of the LP3470M5-3.08/NOPB is to monitor the supply voltage and assert a reset signal if the voltage falls below a predefined threshold.
- What is the package type of the LP3470M5-3.08/NOPB?
The package type is SOT-23-5.
- What is the operating temperature range of the LP3470M5-3.08/NOPB?
The operating temperature range is -20°C to 85°C.
- How is the reset time-out period programmed?
The reset time-out period is programmable using an external capacitor connected to the SRT pin.
- What is the quiescent current of the LP3470M5-3.08/NOPB?
The quiescent current is typically 16 µA.
- What is the minimum and maximum supply voltage for the LP3470M5-3.08/NOPB?
The minimum supply voltage is 0.5 V, and the maximum is 5.5 V.
- What type of reset output does the LP3470M5-3.08/NOPB have?
The reset output is active-low and open-drain.
- What is the reset threshold accuracy of the LP3470M5-3.08/NOPB?
The reset threshold accuracy is ±1% over temperature.
- Is the LP3470M5-3.08/NOPB immune to short VCC transients?
Yes, it is immune to short VCC transients.
- What are some common applications of the LP3470M5-3.08/NOPB?
Common applications include critical microprocessor and microcontroller power monitoring, intelligent instruments, computers, and portable and battery-powered equipment.
