Triple 1800 mA Buck Regulators With Precision Enables and Power Good Outputs
The ADP5135 combines three high performance buck regulators. It is available in a 24-lead 4 mm × 4 mm LFCSP.
The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set to high, the buck regulators operate in forced PWM mode. When the MODE pin is set to low, the buck regulators operate in PWM mode only when the load is above a predefined threshold. When the load current falls below this predefined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency.
Buck1 and Buck2 operate in sync and Buck3 operates out of phase to reduce the input capacitor requirement. Regulators in the ADP5135 are activated through dedicated enable pins. The default output voltages can be externally set in the adjustable version, or factory programmable to a wide range of preset values in the fixed voltage version.
- Power for processors, ASICS, FPGAs, and RF chipsets
- Portable instrumentation and medical devices
- Space constrained devices
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
The user guide describes the hardware for the evaluation of the ADP5135 micropower management unit (micro PMU), and includes detailed schematics and printed circuit board (PCB) layouts. The ADP5135 is available in a 24-lead, 4 mm × 4 mm LFCSP.
The ADP5135CP-EVALZ LFCSP evaluation board has three step-down regulators that enable evaluation of the ADP5135. The evaluation board is available with an adjustable voltage option.
Full details specifications for the ADP5135 are available in the ADP5135 data sheet, which should be consulted in conjunction with the user guide when using the evaluation board.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.