Boost Converter. RT4813C Datasheet


RT4813C Converter. Datasheet pdf. Equivalent


Part Number

RT4813C

Description

High Efficiency Boost Converter

Manufacture

Richtek

Total Page 18 Pages
Datasheet
Download RT4813C Datasheet


RT4813C
RT4813C
High Efficiency Boost Converter
General Description
The RT4813C 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 RT4813C 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 1A,
which maximizes battery life.
Ordering Information
RT4813C
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 550mA
Internal Compensation
Output Discharge
Output Short Protection
True Load Disconnect
Applications
Single-Cell Li-Ion, LiFePO4 Smart-Phones
Portable Equipment
Marking Information
4MW
4M : 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 RT4813C
VIN SW VOUT
C1
VIN FB
C2
I2C Control
SCL
SDA
GND
EN
VOUT
C3
R1
R2
EN
R3
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
DS4813C-01 December 2018
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

RT4813C
RT4813C
Pin Configuration
(TOP VIEW)
EN 1 9 8 VIN
VOUT 2
7 FB
SW 3
6 GND
PGND 4
5 SDA
UQFN-9L 2x2 (FC)
Functional Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
Pin Name
EN
VOUT
SW
PGND
SDA
GND
FB
VIN
SCL
Pin Function
Enable input (1 enabled, 0 disabled), must not be left floating.
Boost converter output.
Switching node.
Power ground.
I2C interface data input.
Analog ground.
Voltage feedback.
Power input. Input capacitor CIN must be placed as close to IC as possible.
I2C interface clock input.
Functional Block Diagram
VIN
OCP
Gate
DRV
VOUT
SW
SDA
SCL
EN
PGND
OSC
Digital
CTRL
PWM
CTRL
OTP
UVLO
AMP -
+
VREF
FB
GND
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS4813C-01 December 2018


Features RT4813C High Efficiency Boost Converter General Description The RT4813C allow s systems to take advantage of new batt ery chemistries that can supply signifi cant energy when the battery voltage is lower than the required voltage for sy stem power ICs. By combining built-in p ower transistors, synchronous rectifica tion, and low supply current; this IC p rovides a compact solution for systems using advanced Li-Ion battery chemistri es. The RT4813C is a boost regulator de signed to provide a minimum output volt age from a single-cell Li-Ion battery, even when the battery voltage is below system minimum. In boost mode, output v oltage regulation is guaranteed to a ma ximum load current of 3.1A. Quiescent c urrent in Shutdown Mode is less than 1 A, which maximizes battery life. Orde ring Information RT4813C Package Type Q UF : UQFN-9L 2x2 (FC) (U-Type) Lead Pla ting System G : Green (Halogen Free and Pb Free) Features  CMCOT Topology and Small Output Ripple when VIN Close VOUT Voltage  Operates from.
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