RT4813 Datasheet, PDF (1/16 Pages) Richtek Technology Corporation – High Efficiency Boost Converter

RT4813
High Efficiency Boost Converter
General Description
The RT4813 allows systems to take advantage of new
battery chemistries that can supply significant energy
when the battery voltage is lower than the required
voltage for system power ICs. By combining built-in
power transistors, synchronous rectification, and low
supply current; this IC provides a compact solution for
systems using advanced Li-Ion battery chemistries.
The RT4813 is a boost regulator designed to provide a
minimum output voltage from a single-cell Li-Ion battery,
even when the battery voltage is below system
minimum. In boost mode, output voltage regulation is
guaranteed to a maximum load current of 3.1A.
Quiescent current in Shutdown Mode is less than 1A,
which maximizes battery life.
Ordering Information
RT4813
Package Type
QUF : UQFN-9L 2x2 (FC) (U-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Features
 CMCOT Topology and Small Output Ripple when
VIN Close VOUT Voltage
 Operates from a Single Li-ion Cell : 1.8V to 5.5V
 Adjustable Output Voltage : 1.8V to 5.5V
 PSM Operation
 Up to 96% Efficiency
 Input Over Current Limit
 Input / Output Over Voltage Protection
 Programmable Average Output Current Limit
Range : 3100mA to 1225mA
 Internal Compensation
 Output Discharge
 Output Short Protection
 True Load Disconnect
Applications
 Single-Cell Li-Ion, LiFePO4 Smart-Phones
 Portable Equipment
Marking Information
3VW
3V : Product Code
W : Date Code
Note :
Richtek products are :
 RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
 Suitable for use in SnPb or Pb-free soldering
processes.
Simplified Application Circuit
L1
RT4813
V_IN
SW
VOUT
C1
VIN
FB
C2
I²C Control
SCL
EN
SDA
GND
V_OUT
R1
C3
R2
EN
R3
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS4813-00 April 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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