Overview
The LM2853MHX-3.3, produced by Texas Instruments, is a 3A 550 kHz synchronous buck regulator. This device is part of TI's synchronous family of DC-DC buck regulators and is designed to provide efficient step-down voltage regulation. It accepts an input voltage between 3 V and 5.5 V and delivers a customizable output voltage that is factory programmable from 0.8 V to 3.3 V in 100 mV increments. The LM2853 features internal type-three compensation, which simplifies external component selection and reduces the overall component count. The regulator is packaged in a 14-lead HTSSOP (PWP) package, enhancing thermal performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 5.5 | V |
| Output Voltage Range | 0.8 to 3.3 | V (in 100 mV increments) |
| Maximum Load Current | 3 | A |
| Switching Frequency | 550 | kHz |
| Standby Current | 12 | µA |
| MOSFET Switch Resistance | 40 | mΩ |
| Package Type | HTSSOP-14 (PWP) | |
| Thermal Resistance (Junction-to-Ambient) | 38 | °C/W |
Key Features
- Voltage mode control with internal type-three compensation for simplified external component selection.
- Internal 40 mΩ MOSFET switches for efficient power conversion.
- Low standby current of 12 µA to minimize power consumption in idle states.
- Customizable output voltage from 0.8 V to 3.3 V in 100 mV increments, set via factory EEPROM.
- Exposed pad 14-lead HTSSOP (PWP) package for enhanced thermal performance.
- Standard voltage options: 0.8, 1.0, 1.2, 1.5, 1.8, 2.5, 3.0, and 3.3 volts.
Applications
- Low voltage point of load regulation for various electronic systems.
- Local power solutions for FPGA, DSP, and ASIC cores.
- Broadband networking and communications infrastructure.
Q & A
- What is the input voltage range of the LM2853MHX-3.3? The input voltage range is from 3 V to 5.5 V.
- What is the maximum load current the LM2853MHX-3.3 can handle? The maximum load current is 3 A.
- What is the switching frequency of the LM2853MHX-3.3? The switching frequency is 550 kHz.
- What type of compensation does the LM2853MHX-3.3 use? It uses internal type-three compensation.
- What is the standby current of the LM2853MHX-3.3? The standby current is 12 µA.
- What is the package type of the LM2853MHX-3.3? It is packaged in a 14-lead HTSSOP (PWP) package.
- Can the output voltage of the LM2853MHX-3.3 be customized? Yes, the output voltage can be customized from 0.8 V to 3.3 V in 100 mV increments via factory EEPROM.
- What are some typical applications of the LM2853MHX-3.3? Typical applications include low voltage point of load regulation, local power solutions for FPGA/DSP/ASIC cores, and broadband networking and communications infrastructure.
- How does the internal type-three compensation benefit the design? The internal type-three compensation simplifies external component selection and reduces the overall component count.
- What is the thermal resistance (junction-to-ambient) of the LM2853MHX-3.3 in its HTSSOP-14 package? The thermal resistance is 38 °C/W.
