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ADP7104ARDZ-1.8-R7
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Product Detailed Parameters
- Description：IC REG LIN 1.8V 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)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：500mA
- Current - Quiescent (Iq)：900 µA
- Current - Supply (Max)：1.6 mA
- PSRR：-
- Control Features：Enable, Power Good, Under Voltage Lockout
- Protection Features：Over Temperature, Short Circuit
- 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 ADP7104ARDZ-1.8-R7 is a CMOS low dropout linear regulator providing a fixed 1.8 V output with up to 500 mA current capability. It operates from an input voltage range of 3.3 V to 20 V and features low noise performance of 15 µV rms. The device includes reverse current protection, programmable UVLO/enable, and a power-good indicator. It is available in 8-lead LFCSP and SOIC packages.
Feature Summary
- Low noise architecture suitable for sensitive analog circuits
- Reverse current protection prevents backflow when output exceeds input
- User-programmable precision undervoltage lockout enables supply sequencing
- Digital power-good output monitors system health
Applications
- ADC and DAC circuit regulation
- Precision amplifier power supplies
- High frequency oscillator and clock stabilization
- PLL power conditioning
- Medical and healthcare equipment
- Industrial instrumentation systems
Procurement Notes
Verify the specific suffix R7 indicates tape and reel packaging configuration. Confirm the ARDZ designation corresponds to the industrial temperature range and SOIC package type. Ensure compatibility with required PCB layout guidelines for thermal management and stability.
Selection Notes
Select this component for applications requiring high input voltages up to 20 V with low quiescent current consumption. The fixed 1.8 V output eliminates external feedback resistors. Consider the 8-lead SOIC package for ease of assembly or LFCSP for compact footprint requirements.
Part Context
This part belongs to the ADP7104 family of high-performance, low-noise LDO regulators. The series supports multiple fixed output voltages and adjustable versions. It is designed for battery-operated portable equipment and infrastructure applications requiring stable power rails for mixed-signal circuits.
Replacement Considerations
Check for direct pin-compatible alternatives within the ADP7104 family offering different fixed output voltages. Verify if other Analog Devices LDOs meet the 500 mA current and 20 V input specifications while maintaining similar noise and dropout characteristics.
FAQ
What is the minimum recommended output capacitance for stability?
A minimum of 1 µF ceramic capacitor with an ESR of 1 Ω or less is recommended to ensure stability.
How does the device handle reverse current flow?
Internal circuitry prevents current flow backwards through the pass element when the output voltage exceeds the input voltage by more than 55 mV.
Can the output voltage be adjusted externally?
No, the ADP7104ARDZ-1.8-R7 is a fixed output version. Adjustable versions are available separately using an external resistor divider.
