Datasheet > LTC7151S

LTC7151S

更新时间： 2024-11-10 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
20页	2760K
描述
20V、15A 同步降压型 Silent Switcher 2 稳压器

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LTC7151S 数据手册

LTC7151S

20V, 15A Synchronous Step-Down

Silent Switcher 2 Regulator

FEATURES

DESCRIPTION

Silent Switcher^®2 Architecture for Low EMI

The LTC^®7151S is a high efficiency monolithic synchro-

nous buck regulator capable of delivering 15A to the load.

It uses a phase lockable controlled on-time constant fre-

quency, current mode architecture. PolyPhase operation

allows multiple LTC7151S regulators to run out-of-phase,

which reduces the amount of input and output capacitors

required. The operating supply voltage range is from 3.1V

to 20V.

V Range: 3.1V to 20V

OUT

Differential V

Range: 0.5V to 5.5V

Remote Sense

OUT

Adjustable Frequency: 400kHz to 3MHz

PolyPhase^®Operation: Up to 12 Phases

Output Tracking and Soft-Start

Reference Accuracy: 1% Overtemperature

Current Mode Operation for Excellent Line and Load

Transient Response

The operating frequency is programmable from 400kHz

to 3MHz with an external resistor. The high frequency

capability allows the use of physically smaller inductor

and capacitor sizes. For switching noise sensitive applica-

tions, the LTC7151S can be externally synchronized from

400kHz to 3MHz. The PHMODE pin allows the user control

of the phase of the outgoing clock signal. The unique con-

stant frequency/controlled on-time architecture is ideal

for high step-down ratio applications that operate at high

frequencies while demanding fast transient response. The

LTC7151S uses second generation Silent Switcher 2 tech-

nology including integrated bypass capacitors to deliver a

highly efficient solution at high frequencies with excellent

EMI performance.

Accurate 1.2V Run Pin Threshold

Supports Forced Continuous/Discontinuous Modes

28-Lead Thermally Enhanced 4mm × 5mm ×

0.74mm LQFN Package

APPLICATIONS

Automotive and Industrial Power Supplies

Server Power Applications

Distributed Power Systems

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

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

TYPICAL APPLICATION

12V_INto 1.0V_OUTApplication

Efficiency and Power Loss

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Rev. 0

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