Print   |   Save to myAnalog

ADP5041:  Micro PMU with 1.2 A Buck, Two 300 mA LDOs, Supervisory, Watchdog and Manual Reset

Product Status:   Recommended for New Designs 

The ADP5041 combines one high performance buck regulator and two low dropout regulators (LDO) in a small 20-lead LFCSP to meet demanding performance and board space requirements.

The high switching frequency of the buck regulator enables use of tiny multilayer external components and minimizes board space.

When the MODE pin is set to logic high, the buck regulator operates in More

forced PWM mode. When the MODE pin is set to logic low, the buck regulator operates in PWM mode when the load is around the nominal value. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5041 LDOs extend the battery life of portable devices. The ADP5041 LDOs maintain a power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.

Each regulator in the ADP5041 is activated by a high level on the respective enable pin. The output voltages of the regulators and the reset threshold are programmed through external resistor dividers to address a variety of applications. The ADP5041 contains supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. They also provide power-on reset signals. An on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. Less

ADP5041:  Micro PMU with 1.2 A Buck, Two 300 mA LDOs, Supervisory, Watchdog and Manual Reset

Product Description

The ADP5041 combines one high performance buck regulator and two low dropout regulators (LDO) in a small 20-lead LFCSP to meet demanding performance and board space requirements.

The high switching frequency of the buck regulator enables use of tiny multilayer external components and minimizes board space.

When the MODE pin is set to logic high, the buck regulator operates in forced PWM mode. When the MODE pin is set to logic low, the buck regulator operates in PWM mode when the load is around the nominal value. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light load efficiency. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5041 LDOs extend the battery life of portable devices. The ADP5041 LDOs maintain a power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.

Each regulator in the ADP5041 is activated by a high level on the respective enable pin. The output voltages of the regulators and the reset threshold are programmed through external resistor dividers to address a variety of applications. The ADP5041 contains supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. They also provide power-on reset signals. An on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period.

    • Input voltage range: 2.3 V to 5.5 V
    • One 1.2 A buck regulator
    • Two 300 mA LDOs
    • 20-lead, 4 mm × 4 mm LFCSP package
    • Overcurrent and thermal protection
    • Soft start
    • Undervoltage lockout
    • Open-drain processor reset with externally adjustable threshold monitoring
    • Guaranteed reset output valid to VAVIN = 1 V
    • Manual reset input
    • Watchdog refresh input
    • Buck key specifications
      Please see data sheet for additional information.
    • LDOs key specifications
      Please see data sheet for additional information.

Functional Block Diagram for ADP5041

Budgetary Price & Packaging   |   Samples   |   Check Inventory & Purchase

back to top

Help

Model
The model number is a specific version of a generic that can be purchased or sampled.

Status
Status indicates the current lifecycle of the product. This can be one of 4 stages:
  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Packing, Qty
Indicates the packing option of the model (Tube, Reel, Tray, etc.) and the standard quantity in that packing option.

Price
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.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

RoHS Compliant
Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN/PDN
This is the list of Product Change Notifications (PCN) and Product Discontinuance Notifications (PDN) published on the web for this model. Click on the link to access PCN/PDN information. Online PCNs are available starting in 2009 and online PDNs are available starting in 2010. To obtain older PCNs or PDNs, contact your ADI Sales Rep. For more information on ADI's PCN/PDN process, please visit our PCN/PDN Information page.

Check Inventory/Purchase/Sample
The Purchase button will be displayed if model is available for purchase online at Analog Devices or one of our authorized distributors. Select the purchase button to display inventory availability and online purchase options.
The Sample button will be displayed if a model is available for web samples. If a model is not available for web samples, look for notes on the product page that indicate how to request samples - or Contact ADI

*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.

Review this Product X
content here.
content here.

Review this Product

Close