LM2651MTCX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2651MTCX-3.3/NOPB is a synchronous step-down switching regulator manufactured by Texas Instruments, originally developed under the National Semiconductor brand. This device operates with an input voltage range of 4 V to 14 V and provides a fixed output voltage of 3.3 V. It delivers a maximum output current of 1.5 A and functions at a switching frequency of 330 kHz. The component is housed in a 16-pin TSSOP package and supports an operating temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high efficiency
• Fixed 3.3 V output configuration
• Integrated shutdown capability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for portable electronics
• Industrial control system voltage conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the manufacturer designation aligns with Texas Instruments, as National Semiconductor was acquired. Confirm the suffix 'NOPB' indicates lead-free compliance and RoHS adherence. Ensure the specific tape-and-reel packaging matches the required production line specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required within a 4 V to 14 V input window. It is suitable for designs needing 1.5 A continuous current in a compact TSSOP-16 footprint. Consider the 330 kHz switching frequency for balancing component size against electromagnetic interference requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2651 family of high-efficiency synchronous regulators. While marketed under National Semiconductor historically, current documentation and manufacturing are managed by Texas Instruments following their acquisition. The device serves as a direct replacement for legacy National Semiconductor inventory in existing circuit designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2651MTC-ADJ/NOPB offers adjustable output instead of fixed 3.3 V. LM2655MTCX-ADJ/NOPB provides higher current capacity at 2.5 A but requires different external component values.