ADP1876ACPZ-R7 Analog Devices, Inc., ADP1876ACPZ-R7 Datasheet

ADP1876ACPZ-R7

Manufacturer Part Number

ADP1876ACPZ-R7

Description

600 Khz Dual Output Synchronous Buck Pwm Controller With Linear Regulator

Manufacturer

Analog Devices, Inc.

Datasheet

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Data Sheet

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% V

Linear dropout (LDO) regulator with a fixed output

Output current more than 25 A per channel

180º phase shift between channels for reduced input

±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,

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

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

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or 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.

Trademarks and registered trademarks are the property of their respective owners.

1.5 V at 150 mA

capacitance

and current sense gain

ADP1876

is a dual output dc-to-dc synchronous buck

600 kHz Dual Output Synchronous Buck

PWM Controller with Linear Regulator

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

3V to 5V INPUT

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

capability with dead time optimization to enable energy

efficient power conversion.

ADP1876

1.5V

TYPICAL OPERATION CIRCUIT

provides high speed, high peak current drive

EN1

EN2

VDL

VCCO

TRK1

PGOOD1

PGOOD2

VINLDO

VOUTLDO

COMP1

COMP2

SS1

SS2

AGND

RAMP1

ADP1876

RAMP1

RAMP2

PGND1

PGND2

VIN

BST1

ILIM1

BST2

ILIM2

SW1

SW2

Figure 1.

DH1

DH2

FB1

DL1

FB2

DL2

RAMP2

CSG1

CSG2

ADP1876

R11

R12

R21

R22

www.analog.com

OUT1

OUT2

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