RT8274 datasheet(1/12 Pages) RICHTEK

номер детали	RT8274

подробное описание детали	The RT8274 is a high voltage buck converter

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производитель	RICHTEK [Richtek Technology Corporation]

домашняя страница	http://www.richtek.com

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RT8274

1

DS8274-01 March 2011

www.richtek.com

Ordering Information

Pin Configurations

(TOP VIEW)

Note :

Richtek products are :

RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Suitable for use in SnPb or Pb-free soldering processes.

3A, 24V, 400kHz Step-Down Converter

Applications

Distributive Power Systems

Battery Charger

DSL Modems

Pre-regulator for Linear Regulators

General Description

The RT8274 is a high voltage buck converter that can

support the input voltage range from 4.75V to 24V and the

output current can be up to 3A. Current Mode operation

provides fast transient response and eases loop

stabilization.

The chip provides protection functions such as cycle-by-

cycle current limiting and thermal shutdown protection.

In shutdown mode, the regulator draws 25

μA of supply

current. The RT8274 is available in a SOP-8 (Exposed

Pad) surface mount package.

Features

Wide Operating Input Range : 4.75V to 24V

Adjustable Output Voltage Range : 1.222V to 15V

Output Current up to 3A

25

μμμμμA Low Shutdown Current

Power MOSFET : 0.1

Ω

High Efficiency up to 95%

400kHz Fixed Switching Frequency

Stable with Low ESR Output Ceramic Capacitors

Thermal Shutdown Protection

Cycle-By-Cycle Over Current Protection

RoHS Compliant and Halogen Free

Typical Application Circuit

SOP-8 (Exposed Pad)

SS

BOOT

VIN

GND

SW

FB

EN

COMP

2

3

4

5

8

7

6

GND

9

VIN

EN

GND

BOOT

FB

SW

7

5

2

3

1

L1

10µH

10nF

22µF

R1

16.9k

R2

10k

VOUT

3.3V / 3A

10µF

Chip Enable

VIN

4.75V to 24V

RT8274

D1

B330A

SS

8

CSS

0.1µF

COMP

CC

4.7nF

RC

4.7k

CP

NC

6

4,

9 (Exposed Pad)

CBOOT

COUT

CIN

Package Type

SP : SOP-8 (Exposed Pad-Option 1)

RT8274

Lead Plating System

G : Green (Halogen Free and Pb Free)

Аналогичный номер детали - RT8274

производитель	номер детали	датащи	подробное описание детали
Richtek Technology Corp...	RT8270	219Kb / 12P	2A, 22V, 1.2MHz Step-Down Converter
	RT8271	237Kb / 15P	2A, 24V, 1.2MHz Step-Down Converter
	RT8272	193Kb / 12P	3A, 24V, 1.2MHz Step-Down Converter
	RT8278	236Kb / 16P	2A, 24V, 3MHz Step-Down Converter
	RT8279	303Kb / 14P	5A, 36V, 500kHz Step-Down Converter

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Аналогичное описание - RT8274

производитель	номер детали	датащи	подробное описание детали
Vishay Siliconix	AN732	75Kb / 7P	Designing A High-Voltage Non-Isolated Buck-Boost Converter with the Si9121DY 04-May-00
Allegro MicroSystems	A8670	463Kb / 27P	The A8670 is a synchronous buck converter capable of delivering up to 2 A.
Texas Instruments	ALM2402-Q1	1Mb / 27P	The ALM2402-Q1 is a dual high voltage
STMicroelectronics	AN3319	1Mb / 25P	The SPV1040 is a high efficiency, low power and low voltage DC-DC converter 21-Mar-2013
STMicroelectronics	AN1441	381Kb / 13P	The ST890 is a low voltage 22-Apr-2009
Richtek Technology Corp...	RT8265	263Kb / 13P	The RT8265 is an asynchronous high voltage buck converter
ON Semiconductor	NCP4060	1Mb / 20P	High Voltage Synchronous Buck Converter January, 2018 ??Rev. 3
International Rectifier	IRDC3651	570Kb / 13P	The IR3651 is a high voltage PWM controller designed for high performance synchronous Buck DC/DC applications.
ON Semiconductor	NCP4060A	1Mb / 21P	Buck Converter - High Voltage, Synchronous August, 2019 ??Rev. 3
Shanghai Leiditech Elec...	ASM6050	1Mb / 10P	The ASM6050 is a voltage regulator with high withstand voltage Rev 12.20.2021

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