Overview
The LMR16006YDDCT from Texas Instruments is a high-efficiency, PWM DC/DC buck (step-down) regulator. This device is part of the SIMPLE SWITCHER family and is designed to convert a higher DC voltage to a lower DC voltage with a maximum output current of 600 mA. It features a wide input voltage range of 4 V to 60 V, making it suitable for various applications including industrial, automotive, and battery-powered equipment. The regulator is optimized for low quiescent current, especially in ECO mode, which helps prolong battery life in portable devices.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4 | - | 60 | V |
| Output Current | - | - | 600 | mA |
| Switching Frequency (LMR16006X) | 595 | 700 | 805 | kHz |
| Switching Frequency (LMR16006Y) | 1785 | 2100 | 2415 | kHz |
| Feedback Voltage | 0.747 | 0.765 | 0.782 | V |
| Peak Current Limit | 1200 | - | 1700 | mA |
| Shutdown Current | - | - | 1 | µA |
| Standby Current in ECO Mode | - | - | 28 | µA |
| Junction Temperature Range | -40 | - | 150 | °C |
| Thermal Shutdown Threshold | - | 170 | - | °C |
Key Features
- Ultra-low 28 µA standby current in ECO mode and 1 µA shutdown current to prolong battery life.
- High duty cycle operation supported.
- Internal compensation and soft-start to minimize inrush currents.
- High voltage enable input and internal pull-up current source.
- Overcurrent protection, overtemperature protection, and overvoltage transient protection.
- Small overall solution size in a SOT-6L package.
- Fixed frequency PWM control with two switching frequency options: 0.7 MHz and 2.1 MHz.
- Integrated boot regulator and bootstrap capacitor to provide gate drive voltage for the high-side MOSFET.
Applications
- Industrial distributed power systems.
- Automotive systems.
- Battery-powered equipment.
- Portable handheld instruments.
- Portable media players.
Q & A
- What is the input voltage range of the LMR16006YDDCT?
The input voltage range is from 4 V to 60 V.
- What is the maximum output current of the LMR16006YDDCT?
The maximum output current is 600 mA.
- What are the switching frequency options for the LMR16006YDDCT?
The switching frequency options are 0.7 MHz and 2.1 MHz.
- What is the typical feedback voltage of the LMR16006YDDCT?
The typical feedback voltage is 0.765 V.
- How does the LMR16006YDDCT manage overcurrent conditions?
The device implements current mode control with peak current limiting, where the high-side switch is turned off when the peak switch current intersects the internal COMP voltage.
- What is the thermal shutdown threshold of the LMR16006YDDCT?
The thermal shutdown threshold is 170°C.
- How does the ECO mode operate in the LMR16006YDDCT?
In ECO mode, the device reduces switching and gate drive losses at light load currents, drawing only 28 µA input quiescent current.
- What is the purpose of the SHDN pin in the LMR16006YDDCT?
The SHDN pin is used to enable or disable the device. It is high voltage tolerant and has an internal pull-up current source.
- How does the LMR16006YDDCT protect against overvoltage transients?
The device incorporates an overvoltage transient protection (OVTP) circuit to minimize voltage overshoot during output fault conditions or strong unload transients.
- What package type is the LMR16006YDDCT available in?
The device is available in a SOT-6L package.
