LM2733XMF

Voltage Regulators - DC DC Switching Regulators Overview

The LM2733XMF is a high-efficiency boost converter manufactured by Texas Instruments, designed for portable applications requiring compact power solutions. It integrates a 40V internal FET switch and supports switching frequencies of 0.6 MHz or 1.6 MHz to optimize inductor size and efficiency. The device operates with an input voltage range from 2.7 V to 14 V and delivers up to 1.5 A output current. It features adjustable output voltages ranging from 3 V to 40 V. Key electrical parameters include a typical quiescent current of 2.1 mA and operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 40V internal FET switch within a small SOT-23 package
• Supports selectable switching frequencies of 0.6 MHz and 1.6 MHz
• Includes shutdown mode for extended battery life in portable devices

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics powered by single-cell lithium-ion batteries
• White LED backlight drivers for mobile displays
• General-purpose step-up voltage regulation in space-constrained designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's datasheet to confirm pinout compatibility and RoHS status. Ensure the selected frequency configuration matches the external component values used in the design. Cross-reference the ordering part number with official Texas Instruments documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact boost solution with a 40V switch rating is required. Choose between 0.6 MHz and 1.6 MHz based on the desired trade-off between passive component size and conversion efficiency. Verify that the maximum output voltage requirement does not exceed the 40V limit imposed by the internal switch.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2733 series belongs to Texas Instruments' portfolio of synchronous boost converters optimized for low-profile applications. It is part of a family that includes variants like the LM2731, which offers a lower 22V switch rating. The XMF designation indicates the specific surface-mount packaging format used for this device.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum voltage rating of the internal switch?

The internal FET switch has a maximum voltage rating of 40V.

Can the switching frequency be adjusted externally?

Yes, the device supports two fixed switching frequencies: 0.6 MHz and 1.6 MHz, selected via an external resistor.