Datasheet > LT8650SP

LT8650SP

更新时间： 2024-09-24 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
34页	3706K
描述
具有6.2μA静态电流的双通道6A、42V、同步降压型Silent Switcher 2稳压器

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LT8650SP 数据手册

LT8650SP

Dual Channel 6A, 42V, Synchronous Step-Down

Silent Switcher 2 with 6.2µA Quiescent Current

FEATURES

DESCRIPTION

Silent Switcher^®2 Architecture:

The LT^®8650SP is a dual step-down regulator that delivers

up to 6A of continuous current from both channels with a

heat sink and supports loads up to 8A from each channel.

The LT8650SP features second generation Silent Switcher

architecture to minimize EMI emissions while delivering

highefficiencyathighswitchingfrequencies.Thisincludes

integrationofbypasscapacitorstooptimizehighfrequency

current loops and make it easy to achieve advertised EMI

performancebyeliminatinglayoutsensitivity.Thetopofthe

package features exposed die for heat sink attach which is

required to meet maximum output current ratings.

Ultralow EMI on Any PCB

Eliminates PCB Layout Sensitivity

Internal Bypass Capacitors Reduce Radiated EMI

Optional Spread Spectrum Modulation

Exposed Die Package for Heat Sink Mount

6A DC from Each Channel Simultaneously

Up to 8A on Either Channel

Ultralow Quiescent Current Burst Mode^®Operation:

6.2μA I Regulating 12V to 5V

and 3.3V

P-P

OUT1

OUT2

Output Ripple <10mV

Optional External VC Pin: Fast Transient Response

and Current Sharing (Extra 50µA I /Channel)

Forced Continuous Mode

High Efficiency at High Frequency

94.6% Efficiency at 2A, 5V

93.3% Efficiency at 4A, 5V

Fast Minimum Switch-On Time: 40ns

Wide Input Voltage Range: 3.0V to 42V

Adjustable and Synchronizable: 300kHz to 3MHz

4mm × 6mm 32-Lead LQFN Exposed Back Package

AEC-Q100 Qualified for Automotive Applications

Thefast,clean,low-overshootswitchingedgesenablehigh

efficiency operation even at high switching frequencies,

leading to a small overall solution size. Peak current mode

control with a 40ns minimum on-time allows high step

down ratios at high switching frequencies.

from 12V at 2MHz

OUT

Burst Mode operation features a 6.2μA quiescent current

resulting in high efficiency at low output currents, forced

continuousmodeallowsfixedswitchingfrequencyopera-

tionovertheentireoutputloadrange,andspreadspectrum

operation can further reduce EMI emissions. External VC

pins allow optimal loop compensation for fast transient

response.TheVCpinscanalsobeusedforcurrentsharing

andtheCLKOUTpinenablessynchronizingtwoLT8650SP

chips to generate a 4-phase, 24A supply.

APPLICATIONS

General Purpose Step-Down

Automotive and Industrial Supplies

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

by U.S. patents, including 8823345.

TYPICAL APPLICATION

5V/6A, 3.3V/6A 2MHz Step-Down Converter

Efficiency

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