RT5771A
RT5771A is Synchronous Step-Down Converter manufactured by Richtek.
Description
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 pensation allows the transient response to be optimized over a wide range of loads and output capacitors. The RT5771A is available in a WDFN-10L 3x3 package.
Ordering Information
Package Type QW : WDFN-10L 3x3 (W-Type)
Lead Plating System G : Green (Halogen Free and Pb Free)
Note : Richtek products are :
Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in Sn Pb or Pb-free soldering processes.
Marking Information
M4=YM DNN
M4= : Product Code YMDNN : Date Code
Features
- High Efficiency : Up to 95%
- 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 pensation
- 0.6V Reference Allows Low Output Voltage
- Low Dropout Operation : 100% Duty Cycle
- OCP, UVP, OTP
- Open VReg Type 0-LV pliant
Applications
- Portable Instruments
- Battery Powered Equipment
- Notebook puters
- Distributed Power Systems
- IP Phones
- Digital Cameras
Pin Configuration
(TOP VIEW)
FB 1 VCC 2
VIN 3 GND 4 GND 5
10 EN 9 PGOOD 8 NC 7 SW 11 6 SW
WDFN-10L 3x3
Copyright ©2019 Richtek Technology Corporation. All rights reserved. DS5771A-02 June 2019 is a registered trademark of Richtek Technology Corporation.
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