NCP1117IDTAT4G

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

The NCP1117IDTAT4G is a positive adjustable low dropout linear voltage regulator manufactured by onsemi. It operates with an input voltage range up to 20 V and delivers an output current of 1 A. The device features an adjustable output voltage range from 1.25 V to 18.8 V. Key electrical specifications include a maximum dropout voltage of 1.2 V at 800 mA, a quiescent current of 10 mA, and a power supply rejection ratio (PSRR) of 61 dB at 120 Hz. It is housed in a DPAK (TO-252-3) surface-mount package and supports an operating temperature range from -40 °C to +125 °C.

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

• Provides stable regulation for adjustable output voltages without requiring a minimum load current.
• Integrates internal thermal overload protection and current limiting to safeguard the device under fault conditions.

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

• Battery-powered systems requiring efficient voltage regulation
• Post-regulation stages for switching power supplies
• General-purpose power management in embedded electronics

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

Verify the specific suffix 'DTAT' against the official onsemi datasheet to confirm the DPAK package type and tape-and-reel packaging configuration. Ensure that the adjustable output variant aligns with the circuit design requirements, as fixed voltage variants exist within the same series. Confirm RoHS compliance status and automotive qualification (AEC-Q100) if applicable to the target application environment before finalizing procurement.

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

Select this component when an adjustable output voltage is required within a 1 A current capability envelope. The DPAK package offers a balance between thermal performance and board space efficiency compared to larger through-hole options. Consider the 1.2 V dropout characteristic at high loads when designing the headroom between input and output voltages. Verify that the external resistor network for setting the output voltage meets precision requirements, as the internal reference accuracy dictates overall regulation performance.

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

This part belongs to the NCP1117I series of low dropout regulators designed for general-purpose applications. The series includes both fixed and adjustable output versions, all capable of delivering over 1.0 A. The 'I' designation typically indicates industrial temperature range capabilities. The NCP1117 family is widely used in consumer and industrial electronics due to its simplicity and robust protection features.

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

The NCV1117DT50RKG is listed as a substitute part number by distributors. Verify pinout compatibility and electrical specifications against the official datasheet before substitution. Note that the NCV prefix may indicate automotive-grade qualification, which could offer enhanced reliability but requires confirmation of functional equivalence for the specific application.