ADP5040

PRODUCTION

Micro PMU with 1.2 A Buck Regulator and Two 300 mA LDOs

Data Sheet (Rev. D) Product Selection Table

Part Models: 1
1ku List Price: Starting From $1.79

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Overview

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
Buck key specifications
- Output voltage range: 0.8 V to 3.8 V
- Current mode topology for excellent transient response
- 3 MHz operating frequency
- Peak efficiency up to 96%
- Uses tiny multilayer inductors and capacitors
- Mode pin selects forced PWM or auto PWM/PSM modes
- 100% duty cycle low dropout mode

LDOs key specifications
- Output voltage range: 0.8 V to 5.2 V
- Low V_IN from 1.7 V to 5.5 V
- Stable with 2.2 μF ceramic output capacitors
- High PSRR
- Low output noise
- Low dropout voltage
- −40°C to +125°C junction temperature range

The ADP5040 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 the 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 pulse width modulation (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 ADP5040 LDOs extend the battery life of portable devices. The ADP5040 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 ADP5040 is activated by a high level on the respective enable pin. The output voltages of the regulators are programmed though external resistor dividers to address a variety of applications.

Part Models: 1
1ku List Price: Starting From $1.79

Documentation

Data Sheet 1

ADP5040: Micro PMU with 1.2 A Buck Regulator and Two 300 mA LDOs Data Sheet (Rev.D) 06/15/2011

User Guide 1

UG-1753: Evaluating the ADP5040 and ADP5041 Micropower Management Units (PMUs) (Rev.0) 12/11/2020

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADP5040ACPZ-1-R7	20-Lead LFCSP (4mm x 4mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 6, 2017 - 16_0234 Assembly Transfer to ASE Korea and Test Transfer to STATS ChipPAC Singapore of Select LFCSP Parts.
		PCN16_0234_Form Material_Report Detailed Change Description Detailed Change Description Qualification Results Summary Test Correlation Report
ADP5040ACPZ-1-R7	PRODUCTION
Aug 6, 2014 - 13_0230 Assembly and Test Transfer of Select 3.5x3.5, 4x3, 4x4, and 5x5mm LFCSP Products to STATS ChipPAC China
		PCN13_0230_Form Material_Report Detailed Change Description Qualification Results Summary Test Correlation Report
ADP5040ACPZ-1-R7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

5V uPMU BuckDesigner

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

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Evaluation Kits

Evaluating the ADP5040 Micropower Management Units (PMUs)

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Features and Benefits

Full featured evaluation board for the ADP5040 or ADP5041
Simple device measurements, including line and load regulation demonstrable with
- A single voltage supply
- A voltage meter
- A current meter
- Load resistors

Easy access to external components
Cascading options to supply LDO regulators from the buck
Dedicated enable option for each channel
Mode option to change bucks from PFM to PWM operation
Voltage monitoring and watchdog for ADP5041

Product Details

The evaluation board shown in Figure 1 in the user guide is configured for the ADP5040 (the assembly for the ADP5041 is not included), but the board can be used for evaluation of the ADP5041. The ADP5040 and ADP5041 have one step-down regulator and two low dropout (LDO) regulators (LDO1 and LDO2).

The evaluation board also allows the evaluation of supervisory functions for the ADP5041. The evaluation board is available in standard voltage options and it can be reconfigured to user specific voltage options by replacing the assembled resistor networks (R2/R3, R4/R5, and R9/R10) as shown in Figure 11 and Figure 12 in the user guide. Voltage monitoring can also be performed in the ADP5041, as shown in Figure 4 in the user guide.

Full details on the ADP5040 and ADP5041 are provided in the ADP5040 and ADP5041 data sheets available from Analog Devices, Inc., which must be consulted in conjunction with this evaluation board user guide.

Resources

UG-1753: Evaluating the ADP5040 and ADP5041 Micropower Management Units (PMUs) (Rev.0)
12/11/2020

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