ADP1877

NOT RECOMMENDED FOR NEW DESIGNS

Dual Output Synchronous Buck PWM Controller

Data Sheet (Rev. D) Product Selection Table

Part Models: 1
1ku List Price: price unavailable

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Overview

Input voltage range: 2.75 V to 14.5 V
Output voltage range: 0.6 V to 90% V_IN
Maximum output current greater than 25 A per channel
Programmable frequency: 200 kHz to 1.5 MHz

Flexmode^® architecture with integrated drivers
180° phase shift minimizes input ripple current and required input capacitance
±0.85% output voltage accuracy −40°C to +85°C
Please see data sheet for additional features.

The ADP1877 is a Flexmode^® (proprietary architecture of Analog Devices, Inc.), dual-channel, step-down switching controller with integrated drivers that drive N-channel synchronous power MOSFETs. The two PWM outputs are phase shifted 180°, which reduces the input RMS current, thus minimizing required input capacitance.

The boost diodes are built into the ADP1877, thus lowering the overall system cost and component count. The ADP1877 can be set to operate in pulse skip high efficiency mode under light load or in PWM continuous conduction mode.

The ADP1877 includes externally adjustable soft start, output overvoltage protection, externally adjustable current limit, power good, and a programmable oscillator frequency that ranges from 200 kHz to 1.5 MHz. The ADP1877 provides an output voltage accuracy of ±0.85% from −40°C to +85°C and ±1.5% from −40°C to 125°C in junction temperature. This part can be powered from a 2.75 V to 14.5 V supply, operates over the −40oC to +125oC junction temperature range, and is available in a 32-lead 5 mm × 5 mm LFCSP package.

APPLICATIONS

Set top boxes
Printers
Communication infrastructure
Distributor power dc systems
Industrial and instrumentation

Part Models: 1
1ku List Price: price unavailable

Documentation

Data Sheet 1

ADP1877: Dual Output Synchronous Buck PWM Controller Datasheet (Rev.D) 09/08/2009

User Guide 1

UG-247: Evaluating the ADP1877 Step-Down DC-to-DC Controller 02/08/2011

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
ADP1877ACPZ-R7	32-Lead LFCSP (5mm x 5mm x 0.85mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 18, 2016 - 16_0036 Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products
		PCN16_0036_Form Material_Report Qualification Results Summary Qualification Results Summary Qualification Results Summary Test Correlation Report
ADP1877ACPZ-R7
Jul 23, 2014 - 13_0255 Assembly and Test Transfer of Select 5x5mm LFCSP Products using Copper Wire to STATS ChipPAC China
		PCN13_0255_Form Material_Report Detailed Change Description Qualification Results Summary Test Correlation Report
ADP1877ACPZ-R7
Jun 7, 2012 - 12_0130 ADP1877 - Bond Wire Change
		PCN12_0130_Form Material_Report Qualification Report Summary
ADP1877ACPZ-R7
May 23, 2012 - 10_0047 TSMC Fab 10 Qualification for LD20 Process
		PCN10_0047_Form Material_Report
ADP1877ACPZ-R7		PCN10_0047_Form Material_Report
Apr 30, 2010 - 10_0100 ADP1877 Data Sheet Specification Change
		PCN10_0100_Form Material_Report Datasheet Specification Comparison
ADP1877ACPZ-R7

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
ADP1829	PRODUCTION	Dual, Interleaved, Step-Down DC-to-DC Controller with Tracking
ADP1850	PRODUCTION	Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller

Tools & Simulations

ADP1850-77 Buck Designer Tool

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

ADP1877 Evaluation Board

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Product Details

This describes the design, operation, and test results of the ADP1877 13 A evaluation board. The input range for this evaluation board is 6 V to 14 V, and the two regulated output voltages are set to 1.8 V and 1.05V, each with a maximum load current of 13 A. A switching frequency (fSW) of 600 kHz achieves a good balance between efficiency and the sizes of the power components.

Resources

UG-247: Evaluating the ADP1877 Step-Down DC-to-DC Controller
2/8/2011

Latest Discussions

2 Years Ago