Datasheet > RT6550A

RT6550A

更新时间： 2024-01-20 00:36:25

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
16页	243K
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RT6550A 技术参数

Status：	Active	Vs (typ) (V)：	12
Vin (min) (V)：	5	Vin (max) (V)：	25
Vout (min) (V)：	2	Vout (max) (V)：	5.5
Preset Vout (V)：		Output Adj. Method：	Resistor
Accuracy (+/- %)：		Freq (typ) (kHz)：	300
Freq (min) (kHz)：	240	Freq (max) (kHz)：	360
Iq (typ) (mA)：	0.42	Features：	ACOT Control;Adjustable Current Limit;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Enable Input;OCP;OVP;UVP
Package Type：	WDFN3x3-10	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS6550A-00.pdf

RT6550A 数据手册

RT6550A

Synchronous DC-DC Step-Down Controller with 5V LDO

General Description

Features

^Support Connected Shutdown Mode for Ultrabook

^CCRCOT Control with 100ns Load Step Response

^PWM Maximum Duty Ratio > 98%

^5V to 25V Input Voltage Range

The RT6550A is a step-down, controller generating supply

voltages for battery-powered systems. It includes Pulse-

Width Modulation (PWM) controller adjustable from 2V

to 5.5V, and a 5V linear regulator which provides up to

100mA output current. Other features include on-board

power-up sequencing, internal soft-start, and soft-

discharge output that prevents negative voltage during

shutdown.

^2V to 5.5V Output Voltage Range

^5V LDO with 100mA Output Current

^Internal Frequency Setting with 300kHz @ V_IN=12V

^Internal Soft-Start and Soft-Discharge

^4700ppm/°C R_DS(ON)Current Sensing

^Independent Switcher Enable Control

^Built-In OVP/UVP/OCP/OTP

A constant current ripple PWM control scheme operates

without sense resistors and provides 100ns response to

load transient. The RT6550A is available in the WDFN-

10L 3x3 package.

^Non-Latch UVLO

Applications

 Notebook and Sub-Notebook Computers

Ordering Information

RT6550A

 System Power Supplies

Pin 1 Orientation***

(2) : Quadrant 2, Follow EIA-481-D

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

Package Type

QW : WDFN-10L 3x3 (W-Type)

Pin Configuration

(TOP VIEW)

Lead Plating System

G : Green (Halogen Free and Pb Free)

LGATE

PHASE

UGATE

BOOT

VIN

VO_DIS

LDO5

Note :

***Empty means Pin1 orientation is Quadrant 1

Richtek products are :

WDFN-10L 3x3

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Marking Information

6W= : Product Code

 Suitable for use in SnPb or Pb-free soldering processes.

YMDNN : Date Code

6W=YM

DNN

is a registered trademark of Richtek Technology Corporation.

DS6550A-00 September 2016

www.richtek.com

12 3 4 5 6 7...16

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