RT8869A datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Power/power management> VcoreCont> RT8869A

RT8869A: DescriptionAdvanced 2/1-Phase PWM Controller for CPU Core Power; CategoryPower/power management VcoreCont; File Size415KB，19 Pages; ManufacturerRichtek Technology Corporation; Websitehttps://www.richtek.com/

Download Datasheet Parametric View All

RT8869A Overview

Advanced 2/1-Phase PWM Controller for CPU Core Power

RT8869A Parametric

Parameter Name	Attribute value
Status	Active
VID Table Su	VR11.0;VR11.1
Number of Phases	2
Vcc (typ)(V)	12
Vin (min)(V)	10.8
Vin (max)(V)	13.2
Accuracy (Vout>=1V)(+/- %)	0.5
Freq (typ)(kHz)	300
Built-in DAC Gene	Yes
Number of MOSFET Drivers	2
Features	Adjustable Frequency;Adjustable Soft-Start;Built-in Bootstrap Switch;DCR Current Sense;Droop Control;Enable Input;OCP;OVP;Power Good;SCP;UVP;Voltage Mode Control
Package Type	WQFN5x5-40

Preview

Download Datasheet

View All

RT8869A

Advanced 2/1-Phase PWM Controller for CPU Core Power

General Description

The RT8869A is an advanced 2/1-phase synchronous buck

controller with 2 integrated MOSFET drivers. It integrates

an 8-bit DAC that supports Intel VR11.x CPUs power

application.

The IC adopts state-of-the-art dynamic phase control

capability by PS1 pin and achieves high efficiency over a

wide load range. It uses lossless R

DS(ON)

current sensing

to achieve phase current balance. Other features include

adjustable operating frequency, adjustable soft-start, short

circuit protection, adjustable over current protection, over

voltage protection, under voltage protection, power good

indication, VR_HOT indication and VR_SHDN indication.

The RT8869A is available in a small footprint with WQFN-

40L 5x5 package.

Features

12V Power Supply Voltage

2/1-Phase Power Conversion

Integrated 2 MOSFET Drivers with Internal

Bootstrap Diode

Dynamic Phase Control Capability

8-bit DAC Supports Intel VR11.x CPUs

Lossless R

DS(ON)

Current Sensing for Current Balance

Adjustable Frequency : 50kHz to 1MHz

Adjustable Over Current Protection

Adjustable Soft-Start

VR_RDY, VR_HOT and VR_SHDN Indications

Small 40-Lead WQFN Package

RoHS Compliant and Halogen Free

Applications

Desktop CPU Core Power

Middle/High End Graphic Cards

Low Voltage, High Current DC/ DC Converters

Ordering Information

RT8869A

Package Type

QW : WQFN-40L 5x5 (W-Type)

Lead Plating System

Z : ECO (Ecological Element with

Halogen Free and Pb free))

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.

Pin Configurations

(TOP VIEW)

FBRTN

VID0

VID1

VID2

VID3

VID4

VID5

VID6

VID7

BOOT1

40 39 38 37 36 35 34 33 32 31

Marking Information

RT8869AZQW : Product Number

DS8869A-00 May 2011

IMAX

VR_SHDN

PS1

ISEN2

ISEN1

VCC5

VOUT

RT8869A

ZQW

YMDNN

VRSEL

VR_RDY

DAC

EAP

COMP

CSP

CSN

11 12 13 14 15 16 17 18 19 20

GND

UGATE1

PHASE1

LGATE1

VCC12A

VCC12B

LGATE2

PHASE2

UGATE2

BOOT2

VR_HOT

YMDNN : Date Code

WQFN-40L 5x5

www.richtek.com

Recommended Resources

Instrument linear optical coupling circuit

DN35 typical application circuit diagram d

Step wave generator circuit diagram composed of sample and hold circuit diagram

Overload power control circuit

A 12-in-1 remote control circuit, the IC is EM78P156

Color TV remote control 34

LM317: ...; 电子竞赛 Analog electronics

ARM hardware design and examples: ARM hardware design and examples...; tecfighter ARM Technology

Question about timer: I don't understand a little bit about the use of timers, and I would like to ask you. 1. Why do we need to re-initialize the timer in the timer interrupt service program? 2. One of the functions of ti...; H15074010 MCU

PWM continuous delay output problem: Last weekend, my boss asked me to do a task: a PWM signal, which required to be outputted as is after a delay of 0.5-5s.The signal that arrives first will be stored first, and then output after a dela...; fengkb MCU

Research on low-power wireless Internet of Things wake-up method: [color=#343434][font=宋体][size=4] [/size][/font][/color][font=宋体][size=6][color=#343434]Research on wake-up method of low-power wireless Internet of Things[/color][/size][/font][color=#343434][font=宋体]...; lclhitwh Wireless Connectivity

HWREG() assignment problem in LM3S8962 driver library: Today I encountered a problem when accessing memory with HWEG() HWREG (0x20000000) = 0xAA55AA55; No problem But given HWREG (0x20000000) = 0xAA55AA00; the program just keeps executing as if it is stuc...; new_redstar Microcontroller MCU

Shortcut: S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

Popular Components