Datasheet > BuckCont> RT8206M

RT8206M

更新时间： 2024-09-24 12:23:39

品牌	Logo	应用领域
立锜 - RICHTEK		电脑控制器
页数	文件大小	规格书
27页	469K
描述
High Efficiency, Main Power Supply Controller for Notebook Computers

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技术参数
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RT8206M 技术参数

Status：	Active	Vs (typ) (V)：	19
Vin (min) (V)：	6	Vin (max) (V)：	25
Vout (min) (V)：	2	Vout (max) (V)：	5.5
Preset Vout (V)：	3.3;5	Output Adj. Method：	Fixed;Resistor
Accuracy (+/- %)：	1.5	Freq (typ) (kHz)：	300;375
Freq (min) (kHz)：	200	Freq (max) (kHz)：	500
Iq (typ) (mA)：	0.18	Features：	Adjustable Current Limit;Adjustable Frequency;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;OCP;OVP;Power Good;SCP;UVP;Ultrasonic Mode Control
Package Type：	WQFN5x5-32

RT8206M 数据手册

RT8206L/M

High Efficiency, Main Power Supply Controller

for Notebook Computers

General Description

Features

^zWide Input Voltage Range 6V to 25V

^zDual Fixed 5V/3.3V Outputs or Adjustable from 2V

to 5.5V, 1.5% Accuracy

The RT8206L/M dual step-down, Switch-Mode Power-

Supply (SMPS) controller generates logic-supply voltages

in battery-powered systems. The RT8206L/M includes two

Pulse-Width Modulation (PWM) controllers fixed at 5V/

3.3V or adjustable from 2V to 5.5V. An optional external

charge pump can be monitored through SECFB (RT8206L).

This device also features a linear regulator providing a

fixed 5V output. The linear regulator provides up to 70mA

output current with automatic linear regulator bootstrapping

to the BYP input. The RT8206L/M includes on-board

power-up sequencing, the power good outputs, internal

soft-start, and internal soft-discharge output that prevents

negative voltages on shutdown.

^zSecondary Feedback Input Maintains Charge Pump

Voltage (RT8206L)

^zIndependent Enable and Power Good

^z5V Fixed LDO Output : 70mA

^z2V Reference Voltage 1% : 50μA

^zConstant ON-Time Control with 100ns Load Step

Response

^zFrequency Selectable via TON Setting

z R_DS(ON)Current Sensing and Programmable Current

Limit

z 4700ppm/°C R_DS(ON)Current Sensing

z Selectable PWM, DEM or Ultrasonic Mode

z Internal Soft-Start with Current Limiting and Soft-

Discharge

Aconstant on-time PWM control scheme operates without

sense resistors and provides 100ns response to load

transients while maintaining a relatively constant switching

frequency. The unique ultrasonic mode maintains the

switching frequency above 25kHz, which eliminates noise

in audio applications. Other features include Diode-

Emulation Mode (DEM), which maximizes efficiency in

light-load applications, and fixed frequency PWM mode,

which reduces RF interference in sensitive application.

z High Efficiency Up to 97%

z 5mW Quiescent Power Dissipation

z Thermal Shutdown

z RoHS Compliant and Halogen Free

Applications

z Notebook and Sub-Notebook Computers

The RT8206L/M is available in a WQFN-32L 5x5 package.

z 3-Cell and 4-Cell Li+ Battery-PoweredDevices

Ordering Information

RT8206

Package Type

QW : WQFN-32L 5x5 (W-Type)

Lead Plating System

G : Green (Halogen Free and Pb Free)

Z : ECO (Ecological Element with

Halogen Free and Pb free)

L : With SECFB

M : Without SECFB

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.

is a registered trademark of Richtek Technology Corporation.

DS8206L/M-07 June 2012

www.richtek.com

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