Overview
The LMR14006YDDCR 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 input voltage range of 4 V to 40 V, making it suitable for various applications including industrial, automotive, and battery-powered equipment. The regulator features a low quiescent current in sleep mode, which is beneficial for prolonging battery life in portable and handheld devices. It operates at fixed switching frequencies of 1.1 MHz and 2.1 MHz, allowing for the use of smaller external components such as inductors and capacitors.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4 | - | 40 | V |
| Output Current | - | - | 600 | mA |
| Switching Frequency (LMR14006Y) | 1785 | 2100 | 2415 | kHz |
| Feedback Voltage (VFB) | 0.747 | 0.765 | 0.782 | V |
| Standby Current in Sleep Mode | - | 28 | - | µA |
| Shutdown Current | - | 1 | - | µA |
| Thermal Shutdown Threshold | - | 170 | - | °C |
| Package Type | - | - | TSOT-6L | - |
Key Features
- High Efficiency Sleep Mode: The device operates in sleep mode at light load currents, reducing switching and gate drive losses to improve efficiency and prolong battery life.
- Internal Compensation and Soft Start: Internal compensation and soft-start circuits minimize the need for external components and reduce inrush currents.
- High Duty Cycle Operation: Supports high duty cycle operation, allowing the device to operate at 100% duty cycle under certain conditions.
- Over Current and Over Temperature Protection: Features pulse-by-pulse current limit, thermal sensing, and shutdown due to excessive power dissipation.
- Small Overall Solution Size: Available in a low-profile TSOT-6L package, measuring 2.9mm × 1.6 mm.
- High Voltage Enable Input: The /SHDN pin is high voltage tolerant, allowing the device to be enabled or disabled with a logic signal.
- Internal Boot Regulator: Integrates a boot regulator, eliminating the need for an external boot diode and reducing the overall component count.
Applications
- Industrial Distributed Power Systems: Suitable for power conditioning in industrial environments.
- Automotive Systems: Applicable in automotive systems due to its wide input voltage range and high efficiency.
- Battery Powered Equipment: Ideal for battery-powered devices where low quiescent current is crucial for prolonging battery life.
- Portable Handheld Instruments: Used in portable handheld instruments and media players due to its small size and low power consumption.
Q & A
- What is the input voltage range of the LMR14006YDDCR?
The input voltage range is from 4 V to 40 V.
- What is the maximum output current of the LMR14006YDDCR?
The maximum output current is up to 600 mA.
- What are the switching frequency options for the LMR14006YDDCR?
The switching frequency options are 1.1 MHz and 2.1 MHz.
- What is the typical feedback voltage of the LMR14006YDDCR?
The typical feedback voltage is 0.765 V.
- How does the LMR14006YDDCR manage high duty cycle operation?
The device supports high duty cycle operation through its boot UVLO and refresh mechanism, allowing it to operate at 100% duty cycle under certain conditions.
- What protection features are integrated into the LMR14006YDDCR?
The device includes over current protection, over temperature protection, and overvoltage transient protection.
- How does the LMR14006YDDCR reduce external component count?
The device integrates internal compensation, soft-start circuits, and a boot regulator, reducing the need for external components.
- What is the package type and size of the LMR14006YDDCR?
The device is available in a TSOT-6L package, measuring 2.9mm × 1.6 mm.
- How does the /SHDN pin function in the LMR14006YDDCR?
The /SHDN pin is high voltage tolerant and can be used to enable or disable the device with a logic signal.
- What is the standby current in sleep mode for the LMR14006YDDCR?
The standby current in sleep mode is 28 µA.
