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ADP7142AUJZ-1.8-R7
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Product Detailed Parameters
- Description：IC REG LIN 1.8V 200MA TSOT-23-5
- 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)：40V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：200mA
- Current - Quiescent (Iq)：140 µA
- Current - Supply (Max)：320 µA
- PSRR：-
- Control Features：Enable
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：TSOT-23-5
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Overview
The ADP7142AUJZ-1.8-R7 is a low dropout linear regulator manufactured by Analog Devices Inc., operating within an input voltage range of 2.7 V to 40 V and delivering up to 200 mA of output current. It provides a fixed output voltage of 1.8 V with an initial accuracy of ±0.8%. The device features ultralow noise of 11 µV rms, high power supply rejection ratios of 88 dB at 10 kHz, and a typical quiescent current of 50 µA. It operates reliably across a temperature range of -40°C to +125°C and utilizes a TSOT-23-5 surface-mount package.
Feature Summary
- Ultralow output noise of 11 µV rms independent of the fixed output voltage for options up to 5 V.
- High power supply rejection ratio reaching 88 dB at 10 kHz, ensuring effective filtering of input supply variations.
- Precision enable pin featuring programmable thresholds and hysteresis to prevent on/off oscillations caused by noise.
- Optimized stability with small ceramic capacitors, requiring only a minimum of 2.2 µF output capacitance.
Applications
- Regulation for noise-sensitive analog and mixed-signal circuits
- Powering ADC and DAC circuits as well as precision amplifiers
- Providing control voltage (VTUNE) for Voltage-Controlled Oscillators (VCO)
- Communications and infrastructure equipment
- Medical, healthcare, industrial instrumentation, and automotive systems
Procurement Notes
Verify the specific package type and output voltage suffix against official datasheets before procurement. Confirm that the component meets AEC-Q100 qualification requirements if intended for automotive applications. Ensure compatibility with design tools such as ADIsimPower or LTspice during the engineering phase. Validate thermal performance parameters based on the actual PCB layout and ambient conditions.
Selection Notes
Select this regulator when high input voltages up to 40 V must be stepped down to low noise rails for sensitive analog loads. The fixed 1.8 V option eliminates the need for external feedback resistors, simplifying the design while maintaining high PSRR. Consider the TSOT-23-5 package for compact designs where user-programmable soft start is not required, as this feature is limited to LFCSP and SOIC packages.
Part Context
This component belongs to the ADP7142 family of CMOS low dropout linear regulators from Analog Devices. The series offers various fixed output voltage options ranging from 1.2 V to 5.0 V, alongside adjustable configurations. The family is characterized by its ability to operate with small ceramic capacitors and its robust protection features, including thermal shutdown and current limiting.
Replacement Considerations
Other fixed output voltage variants within the ADP7142 family share identical electrical characteristics and pinouts, differing only in their internal reference voltage settings. These include options such as ADP7142AUJZ-2.5-R7, ADP7142AUJZ-3.3-R7, and ADP7142AUJZ-5.0-R7. Substitution requires matching the required output voltage level while retaining the same package and operational specifications.
