LM2853MH-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2853MH-3.3 is a fixed-output synchronous buck regulator manufactured by Texas Instruments, providing a stable 3.3 V output voltage. It supports a maximum load current of 3 A and operates with an input voltage range from 3 V to 5.5 V. The device integrates high-side and low-side N-channel MOSFETs for efficient power conversion at a switching frequency of 550 kHz. It utilizes a compact 14-pin HTSSOP package with exposed pad thermal enhancement, designed for operation across an extended temperature range of -40 °C to +125 °C junction temperature.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification using internal high-side and low-side N-channel MOSFETs for improved efficiency
• Fixed 3.3 V output configuration eliminates external feedback resistor requirements
• Compact 14-pin HTSSOP package with exposed pad for effective thermal dissipation

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient step-down power conversion
• Battery-powered systems utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded logic circuits requiring regulated 3.3 V supply rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation against official datasheets to confirm pinout compatibility and thermal performance specifications. Ensure that the selected variant matches the required operating temperature range and package dimensions for your PCB layout constraints before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with up to 3 A load capability. Consider the 550 kHz switching frequency for balancing component size and efficiency. Verify that the input voltage source remains within the 3 V to 5.5 V operational window to ensure stable regulation and protection against undervoltage lockout conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2853 family of synchronous buck regulators from Texas Instruments. The family includes variants with different fixed output voltages and adjustable versions. The MHX suffix indicates the specific HTSSOP package type used for surface-mount assembly, distinguishing it from other package options available within the same functional series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2853MH-3.3/NOPB is a confirmed lead-free replacement variant within the same product line.