Datasheet > RT8120K

RT8120K

更新时间： 2024-09-23 20:35:51

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
18页	222K
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中文翻译

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技术参数
数据手册

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RT8120K 技术参数

Status：	Active	Vs (typ) (V)：	12;5
Vin (min) (V)：	3	Vin (max) (V)：	13.2
Vout (min) (V)：	0.6	Vout (max) (V)：	5
Preset Vout (V)：		Output Adj. Method：	Resistor
Accuracy (+/- %)：	1;1.5	Freq (typ) (kHz)：	300
Freq (min) (kHz)：		Freq (max) (kHz)：
Iq (typ) (mA)：	1.5	Features：	Adjustable Current Limit;Enable Input;Force PWM;OCP;UVP;Voltage Mode Control
Package Type：	PSOP-8;SOP-8

RT8120K 数据手册

RT8120J/K

Single-Phase Synchronous Buck PWM Controller

General Description

Features

^zWide Input Voltage Range : 3V to 13.2V

^zEmbedded Switching Boot Diode

^z0.8V 1%, 0.6V 1.5% Internal Reference

^zShoot-Through Protection and Short Pulse Free

Technology for Gate Drivers

The RT8120J/K is a single-phase synchronous Buck PWM

DC/DC controller designed to drive two N-MOSFET. It

provides a highly accurate, adjustable output voltage

precisely regulated to low voltage requirements with an

internal 0.8V 1% ( option for 0.6V 1.5%) reference. The

RT8120J/K uses a single feedback loop voltage mode

PWM control for fast transient response.An oscillator with

fixed frequency 300kHz reduces the external inductor and

capacitor component size for saving space on PCB. The

RT8120J/K provides fast transient response to satisfy high

current output applications while minimizing external

components. It is suitable for high performance graphic

processors, DDR and VTT power. The RT8120J/K

incorporates an externally compensated error amplifier

and an internal soft-start and an output enable control

function. The RT8120J/K is available in the SOP-8 and

SOP-8 (Exposed Pad) packages.

^zFixed Frequency 300kHz

^zInternal Soft-Start

^zOver Current Protection by Sensing MOSFET R_DS(ON)

^zEnable/Shutdown Control

^zDrives Two N-MOSFETs

^zFull Duty Cycle : 0% to 85%

^zFast Transient Response

z Voltage Mode PWM Control with External

Feedback Loop Compensation

z Pinless LGATE Over Current Setting (LGOCS)

z Under Voltage Protection

z SOP-8 and SOP-8 (Exposed Pad) Packages

z RoHS Compliant and Halogen Free

Applications

z System (Graphic, MB) with 5V or 12V Power

z Graphic Cards (AGP 8X, 4X, PCI Express*16)

z 3.3V to 12V Input DC/DC Regulators

z Low VoltageDistributed Power Supplies

Simplified Application Circuit

RT8120J/K

VCC

BOOT

UGATE

PHASE

COMP/EN

OUT

LGATE/

OCSET

GND

is a registered trademark of Richtek Technology Corporation.

DS8120J/K-00 February 2013

www.richtek.com

12 3 4 5 6 7...18

中文翻译

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