Overview
The LP3470IM5X-3.08 is a micropower CMOS voltage supervisory circuit designed by Texas Instruments. This device is intended to monitor power supplies in microprocessors (µP) and other digital systems, providing maximum adjustability for power-on-reset (POR) and supervisory functions. It asserts a reset signal whenever the VCC supply voltage falls below a predefined reset threshold. The reset time-out period is adjustable using an external capacitor, ensuring flexibility in system design. The LP3470IM5X-3.08 is available in a compact SOT-23-5 package and operates over a wide temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | SOT-23 (DBV) | - |
| Pins | 5 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Reset Threshold Voltage (typ) | 3.08 | V |
| Reset Threshold Accuracy Over Temperature | ±1% | - |
| Quiescent Current (typ) | 16 µA | - |
| Supply Voltage Range | 0.5 to 5.5 | V |
| Reset Valid Down to VCC | 0.5 V | - |
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
- Very low quiescent current (16 µA typical)
- Reset valid down to VCC = 0.5 V
Applications
- Critical microprocessor (µP) and microcontroller (µC) power monitoring
- Intelligent instruments
- Computers
- Portable and battery-powered equipment
Q & A
- What is the primary function of the LP3470IM5X-3.08?
The LP3470IM5X-3.08 is a micropower CMOS voltage supervisory circuit designed to monitor power supplies in microprocessors and other digital systems.
- What is the package type and pin count of the LP3470IM5X-3.08?
The LP3470IM5X-3.08 is packaged in a SOT-23-5 package with 5 pins.
- What is the operating temperature range of the LP3470IM5X-3.08?
The operating temperature range is -40°C to 85°C.
- How is the reset time-out period adjusted in the LP3470IM5X-3.08?
The reset time-out period is adjustable using an external capacitor.
- What is the reset threshold voltage for the LP3470IM5X-3.08?
The reset threshold voltage for this model is 3.08 V.
- What is the quiescent current of the LP3470IM5X-3.08?
The typical quiescent current is 16 µA.
- Is the LP3470IM5X-3.08 immune to short VCC transients?
- Down to what voltage is the reset valid for the LP3470IM5X-3.08?
The reset is valid down to VCC = 0.5 V.
- What are some common applications of the LP3470IM5X-3.08?
Common applications include critical microprocessor and microcontroller power monitoring, intelligent instruments, computers, and portable/battery-powered equipment.
- Can custom reset threshold voltages be obtained for the LP3470IM5X-3.08?
