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ADP7105ARDZ-5.0-R7
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Product Detailed Parameters
- Description：IC REG LINEAR 5V 500MA 8-SOIC-EP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.55V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：900 µA
- Current - Supply (Max)：1.6 mA
- PSRR：60dB ~ 50dB (10kHz ~ 100kHz)
- Control Features：Enable, Power Good, Under Voltage Lockout
- Protection Features：Over Current, Over Temperature, Reverse Polarity
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOIC-EP
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Overview
The ADP7105ARDZ-5.0-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc., providing a fixed 5 V output with up to 500 mA of current capability. It operates from an input voltage range of 3.3 V to 20 V and features a typical dropout voltage of 350 mV at full load. The device incorporates reverse current protection, programmable soft start, and a power-good indicator. It achieves a low output noise of 15 µV rms and maintains high power supply rejection ratios across various frequencies.
Feature Summary
- Provides stable regulation for sensitive analog and mixed-signal circuits using only small ceramic capacitors.
- Includes user-programmable undervoltage lockout and enable functions for precise power sequencing.
- Features integrated thermal overload protection and foldback current limiting for enhanced system reliability.
Applications
- Regulation of ADC and DAC circuits
- Precision amplifier power supplies
- High frequency oscillators and clock generators
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package type and tape-and-reel specifications. Confirm that the component meets all required environmental standards and operating temperature ranges for your specific application before finalizing procurement decisions.
Selection Notes
Select this component when a fixed 5 V rail is required from higher input voltages up to 20 V. Ensure the design accommodates the specified quiescent current and utilizes appropriate input and output capacitance values to maintain stability under varying load conditions.
Part Context
This part belongs to the ADP7105 family of high-voltage LDO regulators designed for applications requiring low noise and high performance. The series offers both adjustable and fixed output options, utilizing advanced proprietary architecture to deliver excellent transient response and line regulation characteristics in compact surface-mount packages.
Replacement Considerations
Consult official manufacturer documentation for verified substitute part numbers. Do not assume functional equivalence based on generic specifications without cross-referencing pinouts and electrical parameters.
FAQ
How does the SENSE/ADJ pin function differ between fixed and adjustable versions?
For fixed output models like the ADP7105ARDZ-5.0-R7, the SENSE/ADJ pin acts as a sense input to measure actual output voltage. For adjustable models, it serves as the adjust input for setting the output voltage via an external resistor divider.
What is the purpose of the SS pin on the ADP7105?
The SS (Soft Start) pin allows connection of an external capacitor to program the startup time, which controls inrush current during the initial power-up phase of the regulator.
