Datasheet > RT8126A

RT8126A

更新时间： 2024-02-07 18:54:02

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	183K
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RT8126A 技术参数

Status：	Active	Vs (typ) (V)：	12;5
Vin (min) (V)：	2.5	Vin (max) (V)：	24
Vout (min) (V)：	0.6	Vout (max) (V)：	5
Preset Vout (V)：		Output Adj. Method：	Resistor
Accuracy (+/- %)：	1	Freq (typ) (kHz)：	300
Freq (min) (kHz)：	270	Freq (max) (kHz)：	330
Iq (typ) (mA)：	0.5	Features：	COT Control;Enable Input;Fast Transient Response;OCP;OVP;PSM;Power Good;UVP
Package Type：	WDFN3x3-10

RT8126A 数据手册

RT8126A/B/C

High Efficiency Single Synchronous Buck PWM Controller

General Description

Features

^VCC Input Range : 4.5V to 13.2V

^VOUT Operating Range : 0.6V to 5V

^Power Stage Input Range : 2.5V to 24V

^Shutdown Current <10μA

^Operating Frequency : Fixed 300kHz

^Diode Emulation Mode (RT8126A)

^Audio Skipping Mode (RT8126B)

^VIN Detection

The RT8126A/B/C PWM controller provides high efficiency,

excellent transient response, and highDC output accuracy

needed for stepping down high voltage batteries to

generate low voltage CPU core, I/O, and chipset RAM

supplies in notebook computers.

The constant on-time PWM control scheme handles wide

input/output voltage ratios with ease and provides 100ns

“instant-on” response to load transients while maintaining

a relatively constant switching frequency.

^Pinless LGATE Over Current Setting (LGOCS)

^Power Good Indication

The RT8126A/B/C achieves high efficiency at a reduced

cost by eliminating the current sense resistor found in

traditional current mode PWMs. Efficiency is further

enhanced by its ability to drive very large synchronous

rectifier MOSFETs. To eliminate noise in audio

applications, the RT8126B providesAudio-Skipping mode,

which maintains the switching frequency above 25kHz.

The buck conversion allows this device to directly step

down high voltage batteries at the highest possible

efficiency. The RT8126A/B/C is intended for CPU core,

chipset, DRAM, or other low voltage supplies as low as

0.6V.

^Embedded Bootstrap Switch

^Current Limit with Low Side Current Sense Scheme

 1% High Accuracy Internal V_REF= 0.6V

 Enable Function

 Differential Output Sense

 OVP/UVP/OTP/Pre-OVP/OCP

Applications

 Chipset/RAM Supply as Low as 0.6V

 GenericDC/DC Power Regulator

Simplified Application Circuit

RT8126A/B/C

VCC

UGATE

BOOT

VCC

OUT

4.7µF

PHASE

100k

LGATE/

OCSET

PGOOD

Load

Enable

GND

FBG

is a registered trademark of Richtek Technology Corporation.

DS8126A/B/C-02 July 2017

www.richtek.com

12 3 4 5 6 7...15

中文翻译

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与RT8126A相关器件

型号	品牌	获取价格	描述	数据表
RT8126B	RICHTEK	获取价格	暂无描述
RT8126C	RICHTEK	获取价格	High Efficiency Single Synchronous Buck PWM Controller
RT8127	RICHTEK	获取价格	暂无描述
RT8127A	RICHTEK	获取价格	暂无描述
RT8128A	RICHTEK	获取价格	暂无描述
RT8128AGSP	RICHTEK	获取价格	High Efficiency Synchronous Buck PWM Controller
RT8128C	RICHTEK	获取价格	暂无描述
RT8128CGSP	RICHTEK	获取价格	High Efficiency Synchronous Buck PWM Controller
RT8129A	RICHTEK	获取价格	暂无描述
RT8129AG	RICHTEK	获取价格	High Efficiency Single Synchronous Buck PWM Controller

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