Datasheet > LTM4653

LTM4653

更新时间： 2023-12-20 18:44:10

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	3470K
描述
符合 EN55022B 标准的 58V 4A 降压直流/直流 μModule 稳压器

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LTM4653 数据手册

LTM4653

EN55022B Compliant 58V, 4A

Step‑Down DC/DC μModule Regulator

FEATURES

DESCRIPTION

The LTM^®4653 is an ultralow noise 58V, 4A DC/DC step-

down μModule^®regulator designed to meet the radiated

emissions requirements of EN55022. Conducted emis-

sion requirements can be met by adding standard filter

components. Included in the package are the switch-

ing controller, power MOSFETs, inductor, filters and

support components.

Complete Low EMI Switch Mode Power Supply

EN55022 Class B Compliant

Wide Input Voltage Range: 3.1V to 58V

Up to 4A Output Current

Output Voltage Range: 0.5V ≤ V

≤ 0.94 • V

OUT

1.67% Total DC Output Voltage Error Over Line,

Load and Temperature (–40°C to 125°C)

Parallel and Current Share with Multiple LTM4653s

Analog Output Current Indicator

Operating over an input voltage range of 3.1V to 58V, the

LTM4653 supports an output voltage range of 0.5V to

Programmable Input Voltage Limiting

94% of V , and a switching frequency range of 250kHz

Constant-Frequency Current Mode Control

Power Good Indicator and Programmable Soft-Start

Overcurrent/Overvoltage/Overtemperature Protection

15mm × 9mm × 5.01mm BGA Package

to 3MHz (400kHz default), each set by a single resistor.

For high load currents, the LTM4653 can be paralleled in

PolyPhase^®operation and synchronized to an external

clock. Only the bulk input and output filter capacitors are

needed to finish the design.

APPLICATIONS

The LTM4653 is offered in a 15mm × 9mm × 5.01mm BGA

package with SnPb or RoHS compliant terminal finish.

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

by U.S. Patents, including 5481178, 5705919, 5847554, 6580258.

Avionics, Industrial Control and Test Equipment

Video, Imaging and Instrumentation

48V Telecom and Network Power Supplies

RF Systems

TYPICAL APPLICATION

4A, 24V Output Low EMI DC/DC μModule Regulator

with Analog Output Current Indicator

Radiated Emission Scan in a 10m Chamber

LTM4653 Delivering 24V_OUTat 3.5A, from 48V_IN

ꢓꢑ

OUT

ꢁꢈꢀꢨ ꢇꢄꢨꢅ ꢗꢑꢎ

ꢨꢂꢈꢜ ꢇꢄꢨꢅ ꢗꢑꢎ

24V

OUT

ꢒꢑ

ꢐꢑ

ꢔꢑ

ꢕꢑ

ꢖꢑ

ꢗꢑ

ꢑ

28V TO 58V

UP TO 4A

10µF

×2

4.7μF

OSNS

LOAD

SGND

PGND

RUN

INTV

LTM4653

VINREG

COMPa

ANALOG OUTPUT

ꢚꢂꢣ ꢃꢄꢁꢄꢅ

IMONa

IMONb

CURRENT INDICATOR

ꢤꢗꢥ ꢞꢦRꢄꢧꢦꢛꢅꢀꢃ

ꢤꢖꢥ ꢌꢈRꢅꢄꢜꢀꢃ

ꢙꢦRꢁꢀꢃ

10nF

= 0.25Ω • I

IMON

OUT

ꢩ

499Ω

ꢘꢗꢑ

SET

PINS NOT USED IN

THIS CIRCUIT:

ꢕꢑ

ꢗꢕꢑ

ꢖꢕꢑ

ꢕꢕꢑ

ꢔꢕꢑ

ꢐꢕꢑ

ꢒꢕꢑ

ꢓꢕꢑ

ꢠꢕꢑ

ꢡꢕꢑ ꢗꢑꢑꢑ

ꢔꢒꢐꢕ ꢅꢀꢑꢗꢢ

124k

GND

ISETa ISETb

ꢙRꢈꢚꢆꢈꢛꢜꢝ ꢉꢁꢞꢟꢏ

CLKIN, PGOOD, COMPb

PGDFB, SW, EXTV

4653 TA01a

–

TEMP , TEMP , NC

481k

Rev. B

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