ADP1877
NOT RECOMMENDED FOR NEW DESIGNSDual Output Synchronous Buck PWM Controller
- Part Models
- 1
- 1ku List Price
- price unavailable
Overview
- Input voltage range: 2.75 V to 14.5 V
- Output voltage range: 0.6 V to 90% VIN
- 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
Documentation
Data Sheet 1
User Guide 1
Power Reference Designs 2
Analog Dialogue 1
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) |
| 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 |
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| ADP1877ACPZ-R7 | ||
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Jul 23, 2014 - 13_0255 Assembly and Test Transfer of Select 5x5mm LFCSP Products using Copper Wire to STATS ChipPAC China |
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| ADP1877ACPZ-R7 | ||
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Jun 7, 2012 - 12_0130 ADP1877 - Bond Wire Change |
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| ADP1877ACPZ-R7 | ||
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May 23, 2012 - 10_0047 TSMC Fab 10 Qualification for LD20 Process |
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| ADP1877ACPZ-R7 | ||
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Apr 30, 2010 - 10_0100 ADP1877 Data Sheet Specification Change |
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| ADP1877ACPZ-R7 | ||
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
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.
Open ToolEvaluation Kits
ADP1877 Evaluation Board