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ADP7185ACPZN1.2-R7
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Product Detailed Parameters
- Description：IC REG LIN -1.2V 500MA 8-LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Negative
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：-5.5V
- Voltage - Output (Min/Fixed)：-1.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.36V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：900 µA
- Current - Supply (Max)：7 mA
- PSRR：80dB ~ 40dB (1kHz ~ 1MHz)
- Control Features：Enable, Power On Reset
- Protection Features：Over Current
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-UFDFN Exposed Pad, CSP
- Supplier Device Package：8-LFCSP (2x2)
- Grade：-
- Qualification：-
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Overview
The ADP7185ACPZN1.2-R7 is a negative low dropout linear regulator providing a fixed -1.2 V output with up to -500 mA load current capability. It operates from an input voltage range of -2.0 V to -5.5 V and features ultralow noise of 4 μV rms (100 Hz to 100 kHz). The device offers high power supply rejection ratios, reaching 68 dB at 10 kHz under full load. It includes positive or negative enable logic, thermal overload protection, and current limiting. The component is housed in an 8-lead, 2 mm × 2 mm LFCSP package.
Feature Summary
- Ultralow output noise performance independent of the selected output voltage level
- High power supply rejection ratio maintained across wide frequency ranges under heavy loads
- Flexible enable logic supporting both positive and negative control signal levels
- Integrated thermal overload and current-limit protection mechanisms
Applications
- Power regulation for analog-to-digital converters
- Supply conditioning for digital-to-analog converters
- Noise-sensitive precision amplifier circuits
- Medical and healthcare instrumentation systems
Procurement Notes
Verify the specific ordering suffix matches the required output voltage configuration. Confirm that the package type aligns with the target PCB footprint requirements. Ensure compatibility with the intended input voltage range before finalizing procurement decisions.
Selection Notes
Select this regulator when designing negative rail supplies requiring minimal noise injection into sensitive analog stages. Consider the thermal resistance characteristics of the LFCSP package for high-current applications. Verify that the external capacitor values meet the stability requirements specified in the datasheet.
Part Context
This component belongs to the ADP7185 family of low dropout regulators manufactured by Analog Devices Inc. The series is designed for high-performance mixed-signal applications requiring stable negative voltage rails. The specific model provides a fixed -1.2 V output option within the broader adjustable and fixed voltage lineup.
Replacement Considerations
Direct substitutes include other ADP7185 variants with different fixed output voltages such as ADP7185ACPZN-3.3-R7 or ADP7185ACPZN-2.5-R7. Adjustable versions like ADP7185ACPZN-ADJ-R7 are also compatible if external feedback networks are utilized.
