LT1963AMPQ

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

The LT1963AMPQ#PBF is a 1.5A low dropout regulator from the LT1963A series, manufactured by Analog Devices Inc. It features an adjustable output voltage range of 1.21V to 20V with a reference voltage of 1.21V. The device operates within a junction temperature range of -55°C to 125°C and utilizes a 5-lead plastic DD-Pak package. Key electrical specifications include a typical quiescent current of 1mA, a dropout voltage of 340mV at 1.5A load, and a ripple rejection of 63dB at 120Hz.

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

• Optimized for fast transient response while maintaining low noise performance suitable for sensitive RF applications.
• Incorporates internal protection circuits including reverse input protection, thermal limiting, and current limiting.
• Features controlled quiescent current that remains stable during dropout conditions without increasing significantly.

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

• Battery-powered systems requiring efficient power management
• Post-regulation for switching power supplies
• Sensitive RF power supply applications

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

Verify the specific suffix #PBF indicates lead-free finish when ordering. Confirm the AMPQ designation corresponds to the extended -55°C to 125°C operating temperature range. Ensure the 5-lead DD-Pak package matches the PCB footprint requirements. Check for automotive grade alternatives if higher reliability standards are required for the application environment.

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

Select this component for designs requiring high current capability with minimal voltage drop under heavy loads. The adjustable output allows flexibility in setting precise voltage levels using external resistors. Consider the thermal dissipation capabilities of the DD-Pak package relative to the expected power loss. Verify stability requirements regarding output capacitor type and ESR values for the specific load conditions.

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

This part belongs to the LT1963A series of low dropout regulators designed for high-performance analog and mixed-signal circuits. The series offers various fixed and adjustable voltage options across multiple package types. The AMPQ variant specifically targets industrial or harsh environments due to its wider operating temperature range compared to standard commercial grades.

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

LT1963AEQ#PBF serves as a direct replacement with a narrower -40°C to 125°C temperature range. LT1963AIQ#PBF is another alternative offering similar electrical characteristics but with a different temperature specification. Ensure pin compatibility and thermal performance match the original design constraints when substituting.