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ADM7154ACPZ-3.3-R7
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Product Detailed Parameters
- Description：IC REG LIN 3.3V 600MA 8-LFCSP-WD
- 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)：5.5V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.21V @ 600mA
- Current - Output：600mA
- Current - Quiescent (Iq)：7 mA
- Current - Supply (Max)：10 mA
- PSRR：58dB (1MHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad, CSP
- Supplier Device Package：8-LFCSP-WD (3x3)
- Grade：-
- Qualification：-
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Overview
The ADM7154ACPZ-3.3-R7 is a fixed-output linear regulator providing 3.3 V at up to 600 mA load current. It operates from an input voltage range of 2.3 V to 5.5 V with a typical dropout voltage of 120 mV at full load. The device features ultralow noise, specified as 0.9 µV rms (100 Hz to 100 kHz) and 1.5 nV/√Hz spectral density (10 kHz to 1 MHz). Power supply rejection ratio reaches 90 dB from 200 Hz to 200 kHz. Quiescent current is 4 mA at no load, dropping to 0.2 µA in shutdown. It includes precision enable functionality, thermal overload protection, and current limiting.
Feature Summary
- Ultralow noise architecture optimized for RF applications
- High power supply rejection ratio across wide frequency ranges
- Precision programmable enable pin with internal hysteresis
- Stable operation with standard ceramic output capacitors
Applications
- PLLs and VCOs requiring clean power regulation
- Communications infrastructure equipment
- Backhaul and microwave links
Procurement Notes
Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the 3.3 V fixed output variant matches system requirements. Check RoHS compliance status through official manufacturer documentation. Ensure ESD precautions are observed during handling due to sensitivity.
Selection Notes
Select this component for designs requiring minimal output noise and high PSRR. Ensure input voltage remains within the 2.3 V to 5.5 V operational range. Verify that the 8-lead LFCSP package fits the PCB layout constraints. Consider thermal dissipation limits based on ambient temperature and load current.
Part Context
This part belongs to the ADM7154 family of 600 mA ultra-low noise linear regulators. It shares architectural similarities with the adjustable ADM7155 but provides a fixed 3.3 V output. The device is designed for compact solutions using small ceramic capacitors.
Replacement Considerations
ADM7155ACPZ-3.3-R7 offers adjustable output instead of fixed 3.3 V. ADM7154ACPZ-1.8-R7 provides a different fixed output voltage. Cross-reference package types if SOIC is required instead of LFCSP.
FAQ
What is the minimum recommended output capacitor value?
A minimum of 10 µF ceramic capacitor is recommended to ensure stability.
How does the BYP capacitor affect performance?
Increasing the BYP capacitor value reduces output noise below 1 kHz but increases start-up time.
Can the enable threshold be adjusted?
Yes, the enable threshold can be programmed higher than the nominal value using external resistors.
