Datasheet > LT8613

LT8613

更新时间： 2023-12-20 18:45:06

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
26页	1914K
描述
具有电流检测功能和 3μA 静态电流的 42V、6A 同步降压型稳压器

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LT8613 数据手册

LT8613

42V, 6A Synchronous

Step-Down Regulator with

Current Sense and 3µA

Quiescent Current

FEATURES

DESCRIPTION

Rail-to-Rail Current Sense Amplifier with Monitor

The LT^®8613 is a compact, high efficiency, high speed

synchronous monolithic step-down switching regulator

that consumes only 3µA of quiescent current. Top and

bottom power switches are included with all necessary

circuitry to minimize the need for external components.

The built-in current sense amplifier with monitor and con-

trol pins allows accurate input or output current regulation

and limiting. Low ripple Burst Mode operation enables

high efficiency down to very low output currents while

Wide Input Voltage Range: 3.4V to 42V

Ultralow Quiescent Current Burst Mode^®Operation:

3μA I Regulating 12V to 3.3V

OUT

Output Ripple < 10mV

P-P

High Efficiency Synchronous Operation:

95% Efficiency at 3A, 5V

94% Efficiency at 3A, 3.3V

from 12V

OUT

from 12V

OUT

Fast Minimum Switch-On Time: 40ns

Low Dropout Under All Conditions: 250mV at 3A

Allows Use of Small Inductors

Low EMI

keeping the output ripple below 10mV . A SYNC pin

P-P

allows synchronization to an external clock. Internal com-

pensation with peak current mode topology allows the use

of small inductors and results in fast transient response

and good loop stability. The EN/UV pin has an accurate

Adjustable and Synchronizable: 200kHz to 2.2MHz

Current Mode Operation

Accurate 1V Enable Pin Threshold

Internal Compensation

1V threshold and can be used to program V undervolt-

age lockout or to shut down the LT8613 reducing the

input supply current to 1µA. A capacitor on the TR/SS pin

programs the output voltage ramp rate during start-up.

Output Soft-Start and Tracking

Small Thermally Enhanced 3mm × 6mm 28-Lead

QFN Package

The PG flag signals when V

is within 9% of the pro-

OUT

grammed output voltage as well as fault conditions. The

LT8613 is available in a small 28-lead 3mm × 6mm QFN

package with exposed pad for low thermal resistance.

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

APPLICATIONS

Automotive and Industrial Supplies

General Purpose Step-Down

CCCV Power Supplies

TYPICAL APPLICATION

Efficiency at 5V_OUT

5V Step-Down Converter with 6A Output Current Limit

ꢒꢊꢊ

ꢡ

ꢌꢆ

ꢜ ꢒꢔꢡ

BST

5.8V TO 42V

ꢘꢐ

ꢘꢊ

ꢓꢐ

ꢓꢊ

ꢑꢐ

ꢑꢊ

ꢏꢐ

ꢏꢊ

0.1µF

3.9µH

10µF

ON OFF

EN/UV

SYNC

IMON

ICTRL

ꢡ

ꢜ ꢔꢕꢡ

ꢌꢆ

8mΩ

1µF

OUT

LT8613

ISP

ISN

BIAS

10pF

INTV

TR/SS

ꢙ

ꢜ ꢑꢊꢊꢝꢞꢟ

ꢀ ꢜ ꢖ.ꢘꢠꢞ

243k

ꢚꢛ

10µF

60.4k

PGND

GND

1µF

100µF

ꢊ

ꢔ

ꢖ

ꢕ

ꢐ

ꢏ

ꢒ

ꢀꢁAꢂ ꢃꢄRRꢅꢆꢇ ꢈAꢉ

8613 TA01a

= 700kHz

ꢓꢏꢒꢖ ꢇAꢊꢒꢗ

L: EPCOS B82559

Rev. A

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与LT8613相关器件

型号	品牌	获取价格	描述	数据表
LT8613_15	Linear	获取价格	42V, 6A Synchronous Step-Down Regulator with Current Sense and 3A Quiescent Current
LT8613EUDE#PBF	Linear	获取价格	LT8613 - 42V, 6A Synchronous Step-Down Regulator with Current Sense and 3µA Quies
LT8614	Linear	获取价格	60V, 1.2A Synchronous Monolithic Buck Regulat
LT8614	ADI	获取价格	具 2.5μA 静态电流的 42V、4A 同步降压型 Silent Switcher
LT8616	Linear	获取价格	60V, 1.2A Synchronous Monolithic Buck Regulat
LT8616	ADI	获取价格	具 6.5μA 静态电流的双通道 42V 同步单片式降压型稳压器
LT8618	ADI	获取价格	High Efficiency 42V/120mA Synchronous Buck
LT8619	Linear	获取价格	60V, 1.2A Synchronous Monolithic Buck Regulat
LT8619	ADI	获取价格	具 6μA 静态电流的 60V、1.2A 同步单片降压型稳压器
LT8620	Linear	获取价格	65V, 2A Synchronous Step-Down Regulator with

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