Overview
The LMR62014XMFE/NOPB is a high-performance step-up voltage regulator produced by Texas Instruments. This device is part of the SIMPLE SWITCHER® family and is designed to operate within a wide input voltage range of 2.7V to 14V, providing an output voltage up to 20V with a maximum switch current of 1.4A. The regulator is housed in a compact SOT-23 package, making it ideal for applications where space is limited. It operates at a fixed frequency of 1.6 MHz, ensuring fast transient response and high power density due to minimal power loss of the internal switch and the use of small inductors and capacitors.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7V to 14V |
| Output Voltage | Up to 20V |
| Switch Current | Up to 1.4A |
| Switching Frequency | 1.6 MHz |
| Shutdown Current (Iq) | < 1 µA |
| Operating Junction Temperature Range | -40°C to +125°C |
| Storage Temperature Range | -65°C to +150°C |
| Package Type | SOT-23 |
| Lifecycle Status | Active (Recommended for new designs) |
Key Features
- Current-mode control with pulse-by-pulse current limiting protection
- High power density due to minimal power loss and the use of small inductors and capacitors
- Low shutdown current (< 1 µA)
- Internal thermal protection
- Feed-forward compensation for stability
- External resistors (R1 and R2) for setting the output voltage
- Shutdown pin for turning the device off
- Recommended use of multi-layer ceramic capacitors (X5R and X7R dielectric types) and Schottky diodes for optimal performance
Applications
The LMR62014XMFE/NOPB is suitable for a variety of applications requiring a compact, high-efficiency step-up voltage regulator. These include:
- Portable electronics and battery-powered devices
- Industrial control systems and automation
- Aerospace and defense systems where space and weight are critical
- Medical devices requiring reliable and efficient power conversion
- Consumer electronics such as smartphones, tablets, and wearables
Q & A
- What is the input voltage range of the LMR62014XMFE/NOPB?
The input voltage range is 2.7V to 14V.
- What is the maximum output voltage of the LMR62014XMFE/NOPB?
The maximum output voltage is up to 20V.
- What is the switching frequency of the LMR62014XMFE/NOPB?
The switching frequency is 1.6 MHz.
- What type of capacitors are recommended for use with the LMR62014XMFE/NOPB?
Multilayer ceramic capacitors with X5R and X7R dielectric types are recommended.
- How is the output voltage set on the LMR62014XMFE/NOPB?
The output voltage is set using external resistors R1 and R2.
- What is the purpose of the shutdown pin on the LMR62014XMFE/NOPB?
The shutdown pin is used to turn the device off by pulling it low. If not used, it should be tied directly to VIN.
- What are the thermal considerations for the LMR62014XMFE/NOPB?
The device has internal thermal protection, and power dissipation should be considered especially at higher duty cycles.
- What type of diodes are recommended for use with the LMR62014XMFE/NOPB?
Schottky diodes such as the MBR0520 are recommended.
- How important is the layout of components in the application circuit?
A careful layout is crucial to ensure stable operation and low noise. Components should be placed as close as possible to the LMR62014 device.
- What is the lifecycle status of the LMR62014XMFE/NOPB?
The device is active and recommended for new designs.
