LTC1144CN8#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC1144CN8#PBF is a CMOS switched-capacitor voltage converter manufactured by Analog Devices Inc. It operates with an input voltage range of 2V to 18V and provides a fixed output current capability of 20mA. The device supports multiple conversion ratios, including inverting (-Vin), doubling (2Vin), and halving (Vin/2) configurations. It features a shutdown mode that reduces quiescent current to 8µA. The component utilizes a PDIP-8 package and is rated for operation within a temperature range of 0°C to +70°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports flexible voltage conversion topologies including inversion, doubling, and halving via external capacitor selection
• Integrates a low-power shutdown function to minimize energy consumption during idle periods
• Utilizes a charge-pump architecture requiring no inductors for efficient DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring negative voltage rails from positive sources
• RS-232 interface circuits needing dual polarity power supplies
• Portable instrumentation utilizing voltage scaling for logic level shifting

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix CN8 against the required package type and temperature grade before ordering. Confirm availability status as distribution channels may indicate limited stock or discontinuation. Ensure the datasheet revision matches the design requirements for electrical characteristics and pinout definitions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when inductor-free solutions are preferred for space-constrained designs. Consider the 20mA output limit for load requirements. Evaluate the switching frequency range of 4kHz to 10kHz for potential EMI sensitivity in noise-critical applications compared to higher-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC1144 family of switched-capacitor regulators. It shares functional similarities with other charge-pump ICs but is distinguished by its wide input voltage range and specific PDIP-8 through-hole packaging option suitable for prototyping or legacy board designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include the LTC1144IS8#PBF for surface-mount applications or the LTC1144IN8#PBF for industrial temperature grades. Verify pin compatibility and thermal performance when transitioning between package types.