LM2662M

Voltage Regulators - DC DC Switching Regulators Overview

The LM2662M is a switched capacitor voltage converter manufactured by Texas Instruments, designed to invert positive input voltages ranging from 1.5 V to 5.5 V into corresponding negative output voltages between -5.5 V and -1.5 V. It delivers an output current of up to 200 mA using two external capacitors, offering a compact footprint with low electromagnetic interference compared to inductor-based solutions. The device operates with a quiescent current of 300 µA and achieves efficiency exceeding 90% under most load conditions. It features selectable oscillator frequencies of 20 kHz or 150 kHz via the FC pin, supports external clock driving through the OSC pin, and includes a shutdown mode that reduces static current to 10 µA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Inverts positive input voltages to negative outputs using switched capacitor topology
• Supports selectable internal oscillator frequencies for EMI optimization
• Enables external clock synchronization via dedicated control pins
• Provides low-power shutdown capability for battery conservation

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring negative rail generation
• Communication and network equipment power management
• Computer peripheral interface circuits
• Consumer electronics with space-constrained layouts

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation against the manufacturer datasheet to confirm package type and temperature range. Ensure external capacitors meet voltage ratings and ripple current specifications for the target application. Confirm RoHS compliance status if required by procurement policy. Cross-reference ordering information with official Texas Instruments documentation to avoid substitution errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact charge pump solution is needed for generating negative voltages from single-supply inputs. Consider the 200 mA output limit and input voltage range during design. Evaluate the need for frequency selection based on system noise requirements. Verify thermal performance within the specified operating temperature range for the intended environment.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2662M belongs to the LM2662 family of switched capacitor voltage converters from Texas Instruments. This series provides efficient voltage inversion and multiplication capabilities without requiring magnetic components. The device integrates control logic for frequency selection and shutdown functions, making it suitable for portable applications where size and power consumption are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM2662 variants with different suffixes indicating package or temperature variations. Verify functional compatibility before substituting with other charge pump ICs. Ensure pinout alignment and electrical parameters match the original design requirements.