LT3027IDD

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LT3027IDD is a dual-channel, micropower, low-noise, low-dropout linear regulator manufactured by Analog Devices Inc. It features two independent inputs and adjustable outputs ranging from 1.22V to 20V. Each channel provides a maximum output current of 100mA with a typical dropout voltage of 300mV at full load. The device operates within an input voltage range of 1.8V to 20V and maintains a quiescent current of 25µA. It offers high power supply rejection ratio (PSRR) of 65dB and low output noise of 20µVRMS over a 10Hz to 100kHz bandwidth when using an external bypass capacitor. The component is housed in a DFN-10 package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Dual independent input channels allowing flexible power distribution
• Ultra-low output noise performance suitable for sensitive analog circuits
• Micropower consumption with minimal quiescent current draw
• Low dropout voltage enabling efficient operation near input limits

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable devices requiring extended runtime
• Audio equipment needing low-noise power supplies
• Sensor interfaces demanding stable and clean voltage rails
• Wireless communication modules with strict power constraints

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'IDD' against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the DFN-10 package footprint matches your PCB design requirements. Confirm RoHS compliance status if required for your manufacturing process. Cross-reference the part number with authorized distributors to avoid counterfeit components. Validate that the operating temperature range meets your environmental specifications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Choose this component when dual isolated supplies are needed from a single source without cross-regulation issues. Consider its low noise profile for applications sensitive to power supply ripple. Evaluate the 100mA per channel limit against your peak load requirements. Assess the need for adjustable outputs versus fixed voltage alternatives. Review the thermal performance in the DFN-10 package under your expected ambient conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The LT3027 belongs to Analog Devices' family of micropower LDO regulators designed for efficiency and noise reduction. It complements other parts like the LT3023 and LT3024, offering dual-channel functionality distinct from single-channel variants. This series targets applications where power conservation and signal integrity are critical. The DFN-10 package provides a compact solution for space-constrained designs.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for direct substitutes such as the LT3027EDD#PBF which shares identical electrical specifications but may differ in packaging or tape-and-reel configuration. Verify functional equivalence before replacing to ensure pinout and thermal performance match your existing design.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

How does the LT3027 achieve low output noise?

The LT3027 achieves low output noise of 20µVRMS by utilizing an internal low-noise reference and requiring an external 0.01µF bypass capacitor connected to the bypass pin.

Can the two channels of the LT3027 be paralleled for higher current?

No, the LT3027 features independent inputs and outputs. Paralleling is not supported due to potential current sharing issues and lack of internal synchronization mechanisms.

What is the minimum input voltage required for regulation?

The minimum input voltage is 1.8V, provided the dropout voltage is accounted for relative to the desired output voltage.