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Analog Devices Semiconductor Electronic Components Datasheet

ADP1876 Datasheet

600 kHz Dual Output Synchronous Buck PWM Controller

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ADP1876 pdf
Data Sheet
600 kHz Dual Output Synchronous Buck
PWM Controller with Linear Regulator
ADP1876
FEATURES
Wide input range: 2.75 V to 20 V
Power stage input voltage: 1 V to 20 V
Output voltage range: 0.6 V up to 90% VIN
Linear dropout (LDO) regulator with a fixed output
1.5 V at 150 mA
Output current more than 25 A per channel
180º phase shift between channels for reduced input
capacitance
±0.85% reference voltage accuracy from −40°C to +85°C
Integrated boost diodes
Independent channel precision enable
Overcurrent limit protection
Externally programmable soft start, slope compensation,
and current sense gain
Thermal overload protection
Input undervoltage lockout (UVLO)
Power good with internal pull-up resistor
Available in 32-lead, 5 mm × 5 mm LFCSP
APPLICATIONS
Consumer applications
Telecommunications base station and networking
Industrial and instrumentation
GENERAL DESCRIPTION
The ADP1876 is a dual output dc-to-dc synchronous buck
controller operating at 600 kHz fixed frequency with integrated
drivers that drive N-channel power MOSFETs. An additional
fixed voltage output, 150 mA linear regulator is available for
powering low power loads. The device operates in current
mode for improved transient response and uses valley current
TYPICAL OPERATION CIRCUIT
RRAMP1
VIN
RAMP1 VIN
ADP1876
EN1
EN2
VDL
VCCO
DH1
BST1
SW1
ILIM1
FB1
3V to 5V INPUT
TRK1
PGOOD1
PGOOD2
DL1
VINLDO PGND1
VOUTLDO
1.5V
RAMP2
NC
RCSG1
RRAMP2
COMP1
COMP2
DH2
BST2
SW2
ILIM2
FB2
SS1
SS2
AGND
DL2
PGND2
RCSG2
M1
L1
R11
M2
R12
VIN
M3
L2
R21
M4
R22
Figure 1.
VOUT1
VOUT2
sensing for enhanced noise immunity. The two PWM outputs
are phase shifted 180° for reducing the input current ripple and
the required input capacitance.
The ADP1876 provides high speed, high peak current drive
capability with dead time optimization to enable energy
efficient power conversion.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

ADP1876 Datasheet

600 kHz Dual Output Synchronous Buck PWM Controller

No Preview Available !

ADP1876 pdf
ADP1876* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
EVALUATION KITS
ADP1876 Evaluation Board
DOCUMENTATION
Data Sheet
ADP1876: 600 kHz Dual Output Synchronous Buck PWM
Controller with Linear Regulator
User Guides
UG-334: Evaluation Board for the ADP1876 Step-Down
DC-to-DC Controller
TOOLS AND SIMULATIONS
ADI Linear Regulator Design Tool and Parametric Search
• ADIsimPower™ Voltage Regulator Design Tool
ADP187x Buck Designer Tool
DESIGN RESOURCES
ADP1876 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
View all ADP1876 EngineerZone Discussions.
SAMPLE AND BUY
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TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not
trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.


Part Number ADP1876
Description 600 kHz Dual Output Synchronous Buck PWM Controller
Maker Analog Devices
Total Page 25 Pages
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