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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 14LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3.25V ~ 20V
- Frequency - Switching：1MHz
- Duty Cycle (Max)：45%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Power Good, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：14-WFDFN Exposed Pad, CSP
- Supplier Device Package：14-LFCSP-WD (4x3)
- Grade：-
- Qualification：-
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Overview
The ADP1879ACPZ-1.0-R7 is a synchronous buck switching controller manufactured by Analog Devices Inc., designed for high-efficiency power conversion in compact form factors. It operates with a fixed output voltage of 1.0 V and supports up to 25 A output current. The device features an adjustable switching frequency range from 300 kHz to 1 MHz, allowing optimization for size and performance. It functions within an ambient temperature range of -40°C to +125°C and utilizes a 14-pin LFCSP-WD package measuring 4x3 mm.
Feature Summary
- Implements current-mode PWM control architecture for precise regulation and fast transient response.
- Integrates synchronous rectification drivers to minimize external component count and improve efficiency.
- Features programmable soft-start capability to limit inrush current during startup sequences.
Applications
- Point-of-load (POL) voltage regulation for digital signal processors
- Power supply stages for field-programmable gate arrays (FPGAs)
- Voltage regulation for embedded memory subsystems
Procurement Notes
Verify the specific suffix '-1.0' confirms the fixed 1.0 V output voltage variant. Confirm the 'R7' designation indicates reel packaging. Ensure the LFCSP-WD 14-pin package matches the target PCB footprint. Check RoHS compliance status against current regulatory requirements for the destination market.
Selection Notes
Select this component when a fixed low-voltage output is required without external resistors. The integrated synchronous design reduces board space compared to controllers requiring external MOSFET drivers. Consider the thermal performance of the 14-LFCSP package for high-current applications exceeding 15 A.
Part Context
This part belongs to the ADP1879 family of synchronous buck controllers. The series is characterized by high integration levels suitable for portable electronics and industrial systems. Variants within the family differ primarily by fixed output voltage settings and switching frequency options.
Replacement Considerations
Cross-reference with ADP1879ACPZ-0.3-R7 for 0.3 V output variants. Verify pin compatibility with other Analog Devices synchronous buck controllers in the LFCSP-14 package before substitution.
