LM828M5X

Voltage Regulators - DC DC Switching Regulators Overview

The LM828M5X is a CMOS charge-pump voltage converter manufactured by Texas Instruments. It inverts positive input voltages ranging from +1.8V to +5.5V into corresponding negative outputs of -1.8V to -5.5V. The device delivers up to 25mA output current using two external capacitors and operates at a switching frequency of 12kHz. With an operating current of only 40µA, it achieves typical conversion efficiency exceeding 96%. Packaged in a compact SOT-23-5 (SC-74A) surface-mount housing, it supports operation across a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Inverts positive supply voltage to negative rail
• High conversion efficiency with low quiescent current
• Compact five-pin surface-mount package

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable systems
• Operational amplifier bias supplies
• Interface power supplies
• Handheld instruments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official documentation to confirm exact packaging configuration and RoHS compliance status. Ensure the ordering part number matches the required tape-and-reel or cut-tape format for your assembly line. Confirm that the component meets all environmental regulations applicable to your region before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-supply system requires a negative voltage rail for dual-rail operational amplifiers or interface circuits. Its low operating current makes it suitable for battery-powered applications where minimizing standby drain is critical. Verify that the load current does not exceed the 25mA limit and that the input voltage remains within the specified 1.8V to 5.5V range for proper regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM828 family of switched-capacitor voltage converters produced by Texas Instruments. It serves as a cost-effective solution for generating negative voltages from a single positive source without requiring inductors. The device integrates the control logic and switches internally, requiring only external flying and storage capacitors for operation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible substitutes within the LM828 series or other TI charge pump families. Verify that any replacement maintains the same SOT-23-5 footprint and electrical characteristics, particularly output current capability and input voltage range.