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ADP7142ARDZ-3.3
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Product Detailed Parameters
- Description：IC REG LIN 3.3V 200MA 8-SOIC-EP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：40V
- 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 Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C (TJ)
- 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 ADP7142ARDZ-3.3 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc. It provides a fixed 3.3 V output with a maximum current of 200 mA and operates from an input voltage range of 2.7 V to 40 V. The device features ultralow noise of 11 µV rms, high power supply rejection ratios of 88 dB at 10 kHz, and low quiescent current of 50 µA. It includes user-programmable soft start, precision enable, and thermal overload protection.
Feature Summary
- Ultralow output noise of 11 µV rms independent of the fixed output voltage setting
- High power supply rejection ratio of 88 dB at 10 kHz for effective ripple suppression
- User-programmable soft start capability via external capacitor in SOIC packages
- Precision enable pin with defined logic thresholds and hysteresis for reliable control
Applications
- Regulation for noise-sensitive analog and mixed-signal circuits
- Powering ADC and DAC circuits as well as precision amplifiers
- Providing stable voltage for VCO VTUNE control applications
- Medical and healthcare equipment requiring clean power rails
Procurement Notes
Verify the specific package type and suffix against official documentation before procurement. Confirm that the ordering suffix corresponds exactly to the required tape-and-reel or cut-tape format. Ensure compatibility with the intended PCB layout regarding exposed pad grounding and thermal dissipation requirements.
Selection Notes
Select this component when high input voltages up to 40 V must be regulated down to low noise levels. Consider the 8-lead SOIC package if programmable soft start functionality is required for the application. Evaluate thermal performance based on the expected load current and ambient temperature conditions.
Part Context
This part belongs to the ADP7142 family of low dropout regulators designed for high-performance analog applications. The series offers various fixed output voltages and multiple package options including LFCSP, SOIC, and TSOT. It is AEC-Q100 qualified for automotive environments.
Replacement Considerations
ADP7142AUJZ-3.3-R7 (TSOT-23-5 package)
FAQ
Can the fixed 3.3 V output be adjusted to a higher voltage?
Yes, the fixed output voltage can be adjusted above its initial set point using an external feedback resistor divider.
What is the minimum recommended output capacitance?
The device is stable with a small 2.2 µF ceramic output capacitor, provided it meets the specified ESR requirements.
