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ADP7118ARDZ-3.3-R7
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Product Detailed Parameters
- Description：IC REG LIN 3.3V 200MA 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)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.42V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：140 µA
- Current - Supply (Max)：320 µA
- PSRR：88dB ~ 50dB (10kHz ~ 1MHz)
- Control Features：Enable, Soft Start
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TA)
- 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 ADP7118ARDZ-3.3-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc. It operates from an input voltage range of 2.7 V to 20 V and provides up to 200 mA of output current. The device features a fixed 3.3 V output with an initial accuracy of ±0.8%. It delivers ultralow output noise of 11 µV rms and high power supply rejection ratios of 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz. Quiescent current is typically 50 µA with no load, rising to 180 µA at full load. The regulator includes precision enable functionality, programmable soft start, and thermal overload protection.
Feature Summary
- Ultralow output noise performance independent of the fixed output voltage setting
- High power supply rejection ratio across a wide frequency spectrum
- Precision enable pin with user-programmable thresholds and hysteresis
- User-programmable soft start capability via external capacitor
Applications
- Regulation for noise-sensitive analog circuits
- Powering ADC and DAC circuits
- Supplying precision amplifiers
- Providing power for VCO VTUNE control
- Communications and infrastructure systems
Procurement Notes
Verify the specific package type and marking against the datasheet before integration. Confirm that the ordering suffix corresponds to the required reel quantity and tape configuration. Ensure the component meets RoHS compliance requirements for your assembly process. Check for automotive qualification status if deploying in vehicle environments. Validate thermal dissipation capabilities based on your PCB layout and ambient conditions.
Selection Notes
Select this regulator when low noise and high PSRR are critical for signal integrity. Ensure the input voltage remains within the 2.7 V to 20 V operational range. Verify that the load current does not exceed the 200 mA maximum rating. Consider the thermal resistance of the SOIC package for heat management. Use X5R or X7R ceramic capacitors to maintain stability and meet minimum capacitance requirements.
Part Context
This component belongs to the ADP7118 family of low dropout regulators designed for high-performance mixed-signal applications. The series supports various fixed output voltages and adjustable configurations. It is optimized for use with small ceramic capacitors to save board space. The device is suitable for portable equipment due to its low quiescent current consumption.
Replacement Considerations
Direct substitutes include other ADP7118 variants with different output voltages or packages. Cross-reference specifications such as dropout voltage and quiescent current carefully. Verify pin compatibility and thermal characteristics before substitution.
