Datasheet > RT8120B

RT8120B

更新时间： 2024-01-02 17:53:24

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
17页	223K
描述
Single-Phase Synchronous Buck PWM Controller

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中文翻译

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数据手册

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RT8120B 数据手册

RT8120

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 RT8120 is a single-phase synchronous buck PWM

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

provides a highly accurate, programmable output voltage

precisely regulated to low voltage requirements with an

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

RT8120 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 PCB board area. The

RT8120 provides fast transient response to satisfy high

current output applications while minimizing external

components. It is suitable for high performance graphic

processors,DDR and VTTpower. The RT8120 incorporates

an externally compensated error amplifier and an internal

soft-start and output enable. The RT8120 comes in

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

Ordering Information

RT8120

Applications

Package Type

S : SOP-8

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

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

Lead Plating System

z Low VoltageDistributed Power Supplies

G : Green (Halogen Free and Pb Free)

Z : ECO (Ecological Element with

Halogen Free and Pb free)

Pin Configurations

Reference Voltage

A/C : 0.6V

(TOP VIEW)

B/D : 0.8V

BOOT

UGATE

PHASE

COMP/EN

Note :

GND

Richtek products are :

LGATE/OCSET

VCC

` 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.

SOP-8

BOOT

UGATE

PHASE

COMP/EN

GND

LGATE/OCSET

VCC

SOP-8 (Exposed Pad)

is a registered trademark of Richtek Technology Corporation.

DS8120-08 September 2013

www.richtek.com

12 3 4 5 6 7...17

中文翻译

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与RT8120B相关器件

型号	品牌	获取价格	描述	数据表
RT8120C	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120D	RICHTEK	获取价格	Single-Phase Synchronous Buck PWM Controller
RT8120E	RICHTEK	获取价格	暂无描述
RT8120F	RICHTEK	获取价格	暂无描述
RT8120G	RICHTEK	获取价格	暂无描述
RT8120H	RICHTEK	获取价格	暂无描述
RT8120J	RICHTEK	获取价格	暂无描述
RT8120K	RICHTEK	获取价格	暂无描述
RT8121	RICHTEK	获取价格	暂无描述
RT8122	RICHTEK	获取价格	High Efficiency Dual-Channel Synchronous Buck PWM Controller with Phase Interleaving and T

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