MAX17543 datasheet(1/19 Pages) MAXIM

Nome de Peças	MAX17543

Descrição Electrónicos	4.5V??2V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

PDF	19 Pages

Scroll/Zoom	100%

Fabricante Electrônico	MAXIM [Maxim Integrated Products]

Página de início	https://www.maximintegrated.com/en.html

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1 / 19 page

19-7054; Rev 1; 7/16

General Description

The MAX17543 high-efficiency, high-voltage, synchronous

step-down DC-DC converter with integrated MOSFETs

operates over a 4.5V to 42V input. The converter can

deliver up to 2.5A and generates output voltages from

0.9V up to 0.9 x VIN. The feedback (FB) voltage is

accurate to within ±1.1% over -40°C to +125°C.

The MAX17543 uses peak current-mode control. The

device can be operated in the pulse-width modulation

(PWM), pulse-frequency modulation (PFM), or

discontinuous conduction mode (DCM) control schemes.

The device is available in a 20-pin (4mm x 4mm) TQFN

package. Simulation models are available.

Applications

● Industrial Power Supplies

● Distributed Supply Regulation

● High-Voltage Single-Board Systems

● Base Station Power Supply

● General-Purpose Point-of-Load

Benefits and Features

● Reduces External Components and Total Cost

• No Schottky—Synchronous Operation

• Internal Compensation for Any Output Voltage

• Built-In Soft-Start

• All-Ceramic Capacitors, Compact Layout

● Reduces Number of DC-DC Regulators to Stock

• Wide 4.5V to 42V Input

• Adjustable 0.9V to 0.9 x VIN Output

• 100kHz to 2.2MHz Adjustable Switching Frequency

with External Synchronization

● Reduces Power Dissipation

• Peak Efficiency >90%

• PFM/DCM Enables Enhanced Light-Load

Efficiency

• 2.8µA Shutdown Current

● Operates Reliably in Adverse Industrial Environments

• Peak Current-Limit Protection

• Built-In Output Voltage Monitoring with RESET

• Programmable EN/UVLO Threshold

• Monotonic Startup into Prebiased Load

• Overtemperature Protection

• High Industrial -40°C to +125°C Ambient Operating

Temperature Range/-40°C to +150°C Junction

Temperature Range

Ordering Information appears at end of data sheet.

Typical Application Circuit—5V, 500kHz Switching Frequency

RESET

VIN

VIN VIN

BST

RT

SYNC

MODE

VCC

SGND

CF

SS

FB

PGND

LX

EN/UVLO

MAX17543

L1

10µH

C5

0.1µF

C4

22µF

R3

178kΩ

R4

39kΩ

VOUT

5V, 2.5A

VIN

(6.5V TO 42V)

C1

2.2µF

C3

5.6nF

fSW = 500kHz

C2

2.2µF

MAX17543

4.5V–42V, 2.5A, High-Efficiency,

Synchronous Step-Down DC-DC Converter

with Internal Compensation

EVALUATION KIT AVAILABLE

Nº de peça semelhante - MAX17543

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Maxim Integrated Produc...	MAX17543	2Mb / 19P	Synchronous Step-Down DC-DC Converter Rev 0; 9/14
	MAX17543	966Kb / 11P	5V Output-Voltage Application Rev 0; 9/14
	MAX17543	1,014Kb / 11P	3.3V Output-Voltage Application Rev 0; 9/14
	MAX17543EVKITA	1,014Kb / 11P	3.3V Output-Voltage Application Rev 0; 9/14
	MAX17543EVKITB	966Kb / 11P	5V Output-Voltage Application Rev 0; 9/14

More results

Descrição semelhante - MAX17543

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Maxim Integrated Produc...	MAX17546	819Kb / 19P	4.5V–42V, 5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Rev 0; 6/15
	MAX17572	936Kb / 16P	4.5V–60V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Rev 0; 9/16
	MAX17536	877Kb / 19P	4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Rev 2; 6/18
	MAX17575	1Mb / 16P	4.5V–60V, 1.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Rev 3; 12/19
	MAX17545	1Mb / 21P	4.5V??2V, 1.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation 2016
	MAX17572	815Kb / 16P	4.5V??0V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation 2018
	MAX17503	5Mb / 27P	4.5V-60V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation 2021
	MAX17504	1Mb / 26P	4.5V??0V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation 2017
	MAX17506	739Kb / 20P	4.5V??0V, 5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation 2018
	MAX17544	864Kb / 21P	4.5V??2V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation 2016

More results

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