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RT5771A PDF预览

RT5771A

更新时间: 2024-11-21 16:26:39
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
13页 170K
描述
暂无描述

RT5771A 技术参数

Status:ActiveVin (min) (V):2.7
Vin (max) (V):5.5Number of Outputs:1
Vout (min) (V):0.6Vout (max) (V):5.5
Preset Vout (V):Output Adj. Method:Resistor
Iout (max) (A):3Current Limit (typ) (A):4.8
Freq (typ) (kHz):1000Freq (min) (kHz):
Freq (max) (kHz):Ext Sync:No
Ron_HS (typ) (mOhm):69Ron_LS (typ) (mOhm):49
Iq (typ) (mA):0.4Features:100% Duty Cycle;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;Low Dropout;OCP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type:WDFN3x3-10

RT5771A 数据手册

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®
RT5771A  
3A, 1MHz, Synchronous Step-Down Converter  
General Description  
Features  
High Efficiency : Up to 95%  
The RT5771A is a high efficiency synchronous, step-down  
DC-DC converter. Its input voltage ranges from 2.7V to  
5.5V that provides an adjustable regulated output voltage  
from 0.6V to VIN while delivering up to 3A of output current.  
The internal synchronous low on-resistance power  
switches increase efficiency and eliminate the need for  
an external Schottky diode. The switching frequency is  
fixed internally at 1MHz. The 100% duty cycle provides  
low dropout operation, hence extending battery life in  
portable systems. Current mode operation with internal  
compensation allows the transient response to be  
optimized over a wide range of loads and output capacitors.  
The RT5771Ais available in a WDFN-10L 3x3 package.  
Low RDS(ON) Power Switches : 69mΩ/49mΩ  
Current Mode Operation  
Forced-PWM (FPWM) Mode  
Fast Transient Response  
Fixed Frequency : 1MHz  
No Schottky Diode Required  
Internal Compensation  
0.6V Reference Allows Low Output Voltage  
Low Dropout Operation : 100% Duty Cycle  
OCP, UVP, OTP  
OpenVReg Type 0-LV Compliant  
Applications  
Ordering Information  
RT5771A  
Portable Instruments  
Battery Powered Equipment  
Notebook Computers  
Distributed Power Systems  
IP Phones  
Package Type  
QW : WDFN-10L 3x3 (W-Type)  
Lead Plating System  
G : Green (Halogen Free and Pb Free)  
Digital Cameras  
Note :  
Richtek products are :  
Pin Configuration  
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.  
(TOP VIEW)  
1
2
3
4
5
10  
9
EN  
PGOOD  
NC  
SW  
FB  
VCC  
VIN  
GND  
GND  
8
7
Marking Information  
11  
6
SW  
M4= : Product Code  
WDFN-10L 3x3  
YMDNN : Date Code  
M4=YM  
DNN  
Copyright 2019 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS5771A-02 June 2019  
www.richtek.com  
1

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