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ADP7157ACPZ-02-R7
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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 1.2A 10LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：2.3V
- Voltage Dropout (Max)：0.17V @ 1.2A
- Current - Output：1.2A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：12 mA
- PSRR：72dB ~ 53dB (1kHz ~ 1MHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：10-VFDFN Exposed Pad, CSP
- Supplier Device Package：10-LFCSP-WD (3x3)
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Overview
The ADP7157ACPZ-02-R7 is an adjustable linear regulator from Analog Devices operating within a 2.3 V to 5.5 V input voltage range. It delivers up to 1.2 A of output current with an adjustable output voltage range of 1.2 V to 2.3 V. The device features ultralow noise, typically 0.9 µV rms from 100 Hz to 100 kHz, and high power supply rejection ratio (PSRR) of 72 dB at 1 kHz to 100 kHz for this specific model. It includes precision enable functionality, low shutdown current, and is stable with a 10 µF ceramic output capacitor. The component is housed in a 10-lead, 3 mm × 3 mm LFCSP package.
Feature Summary
- Ultralow noise performance optimized for sensitive RF applications
- High power supply rejection ratio across wide frequency ranges
- Precision programmable enable pin for controlled startup and shutdown
- Stable operation with small 10 µF ceramic output capacitors
Applications
- Phase-locked loops (PLLs)
- Voltage controlled oscillators (VCOs)
- Backhaul and microwave links
Procurement Notes
Verify the exact suffix against the manufacturer's official ordering guide to confirm the specific output voltage range and package type. Confirm availability status through authorized distributors as stock levels fluctuate. Ensure compliance with RoHS directives and check for any regional shipping restrictions before finalizing procurement orders.
Selection Notes
Select this model when the required output voltage falls between 1.2 V and 2.3 V. Consider the thermal resistance characteristics of the LFCSP package for heat dissipation requirements. Evaluate the input-to-output voltage differential to ensure efficient operation within the specified dropout voltage limits under maximum load conditions.
Part Context
This component belongs to the ADP7157 series of ultralow noise, high PSRR RF linear regulators. The series offers multiple models tailored to different input and output voltage combinations to optimize power dissipation. It shares architectural similarities with other ADI LDOs but is distinctively designed for high-performance analog and RF circuits requiring minimal noise injection.
Replacement Considerations
Consult the official datasheet Table 1 for related devices such as the ADP7158 or ADP7159 for higher current options. Verify pin compatibility and electrical specifications before substituting with fixed-output variants like the ADP7156.
