LTC7150S

1

7150sfa

For more information www.linear.com/LTC7150S

TYPICAL APPLICATION

FEATURES

DESCRIPTION

20V, 20A Synchronous

Step-Down Regulator

TheLTC®7150Sisahighefficiencymonolithicsynchronous

buckregulatorcapableofdelivering20Atotheload.Ituses

a phase lockable controlled on-time constant frequency,

current mode architecture. PolyPhase operation allows

multiple LTC7150S regulators to run out-of-phase, which

reducestheamountofinputandoutputcapacitorsrequired.

The operating supply voltage range is from 3.1V to 20V.

The operating frequency is programmable from 400kHz

to 3MHz with an external resistor. The high frequency ca-

pability allows the use of physically smaller inductor and

capacitorsizes.Forswitchingnoisesensitiveapplications,

theLTC7150Scanbeexternallysynchronizedfrom400kHz

to 3MHz. The PHMODE pin allows the user control of the

phase of the outgoing clock signal. The unique constant

frequency/controlled on-time architecture is ideal for

high step-down ratio applications that operate at high

frequencies while demanding fast transient response.

The LTC7150S uses second generation Silent Switcher

technology including integrated bypass capacitors to

deliver a highly efficient solution at high frequencies with

excellent EMI performance.

APPLICATIONS

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Adjustable Frequency: 400kHz to 3MHz

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Output Tracking and Soft-Start

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Reference Accuracy: 0.6V ±1% Over Temperature

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Current Mode Operation for Excellent Line and Load

Transient Response

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Accurate 1.2V Run Pin Threshold

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Supports Forced Continuous/Discontinuous Modes

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42-Lead 6mm × 5mm × 1.3mm BGA Package

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Server Power Applications

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Distributed Power Systems

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Point of Load Supply for ASIC, FPGA, DSP, µP, etc.

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

Efficiency and Power Loss

0

4

8

12

16

20

70

75

80

85

90

95

100

0

2

4

6

8

10

12

7150S TA01b

7150S TA01a

RUN

PVIN

SVIN

SW

FB

PHMODE

TRACK/SS

CLKOUT

PGOOD

MODE/SYNC

SGND

LTC7150S

22µF

×2

3.1V TO 20V

0.25µH

RT

ITH

4.7µF

162k

10k

1nF

22pF

10k

10k

100µF

×2

330µF

1.2V/20A

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