Overview
The LMR14006XDDCR is a high-efficiency, 40 V, 600 mA step-down (buck) regulator produced by Texas Instruments. This device is part of the SIMPLE SWITCHER family and is designed to provide a wide range of applications with efficient power conditioning from an unregulated source. It features a low quiescent current, making it suitable for battery-operated systems and other power-sensitive applications. The regulator operates with a fixed switching frequency of either 1.1 MHz or 2.1 MHz, allowing for the use of small external components while maintaining low output ripple voltage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4 | - | 40 | V |
| Output Current | - | - | 600 | mA |
| Switching Frequency (LMR14006X) | 935 | 1100 | 1285 | kHz |
| Switching Frequency (LMR14006Y) | 1785 | 2100 | 2415 | kHz |
| Feedback Voltage (VFB) | 0.747 | 0.765 | 0.782 | V |
| Standby Current | - | 28 | - | µA |
| Shutdown Current | - | 1 | - | µA |
| Thermal Shutdown Threshold | - | 170 | - | °C |
| Package Type | - | - | - | TSOT-6L |
Key Features
- Ultra Low Quiescent Current: 28 µA in sleep mode and 1 µA in shutdown mode to prolong battery life.
- High Efficiency: Optimized for high efficiency operation with minimal external components.
- Fixed Frequency Operation: Available in 1.1 MHz and 2.1 MHz switching frequencies to allow for smaller inductor and capacitor sizes.
- Internal Compensation and Soft Start: Reduces the need for external components and minimizes inrush currents.
- High Duty Cycle Operation: Supports high duty cycle operation with an integrated boot recharge diode and UVLO circuit.
- Over Current and Over Temperature Protection: Built-in protection features to ensure safe operation.
- Small Overall Solution Size: Available in a low-profile TSOT-6L package.
- Output Voltage Setting: Output voltage can be set using a feedback pin and a resistor divider.
- Enable and UVLO: High voltage tolerant enable input with internal pull-up and adjustable UVLO threshold.
Applications
- Industrial Distributed Power Systems: Suitable for a wide range of industrial applications requiring efficient power conditioning.
- Automotive Systems: Designed to meet the stringent requirements of automotive power systems.
- Battery Powered Equipment: Ideal for battery-operated devices due to its low quiescent current.
- Portable Handheld Instruments: Used in portable devices where power efficiency and small size are critical.
- Portable Media Players: Suitable for media players and other portable electronic devices.
Q & A
- What is the input voltage range of the LMR14006XDDCR?
The input voltage range is from 4 V to 40 V.
- What are the available switching frequencies for the LMR14006XDDCR?
The device is available with switching frequencies of 1.1 MHz and 2.1 MHz.
- What is the typical feedback voltage for the LMR14006XDDCR?
The typical feedback voltage is 0.765 V.
- How does the LMR14006XDDCR manage standby and shutdown currents?
The device has a standby current of 28 µA and a shutdown current of 1 µA.
- What kind of protection features does the LMR14006XDDCR have?
The device includes over current protection, over temperature protection, and overvoltage transient protection.
- How is the output voltage set for the LMR14006XDDCR?
The output voltage is set using a feedback pin and a resistor divider.
- What is the package type of the LMR14006XDDCR?
The device is available in a TSOT-6L package.
- What are some typical applications for the LMR14006XDDCR?
Industrial distributed power systems, automotive systems, battery-powered equipment, portable handheld instruments, and portable media players.
- How does the LMR14006XDDCR handle high duty cycle operation?
The device supports high duty cycle operation with an integrated boot recharge diode and UVLO circuit.
- What is the thermal shutdown threshold for the LMR14006XDDCR?
The thermal shutdown threshold is 170°C.
