®
RT8073
6A, 2MHz, High Efficiency Synchronous Step-Down Converter
General Description
The RT8073 is a high efficiency PWM step-down converter
and capable of delivering 6A output current over a wide
input voltage range from 2.9V to 5.5V.
The RT8073 provides accurate regulation for a variety of
loads with an
±1%
reference voltage at room temperature.
For reducing inductor size, it provides up to 2MHz
switching frequency. The efficiency is maximized through
the integrated 50mΩ for high side, 35mΩ for low side
MOSFETs and 250μA typical supply current.
The RT8073 features over current protection, frequency
fold back function in shorted circuit, hiccup mode under
voltage protection and over temperature protection.
The RT8073 is available in SOP-8 (Exposed Pad) and
WDFN-12L 3x3 packages.
Features
Ω
Ω
Integrated 50mΩ and 35mΩ MOSFETs
6A Output Current
High Efficiency Up to 95%
2.9V to 5.5V Input Range
Adjustable PWM Frequency : 300kHz to 2MHz
0.8V
±
1% Reference Voltage
Adjustable External Soft-Start
Power Good Indicator (WDFN-12L 3x3 only)
Over Current Protection
Under Voltage Protection
Over Temperature Protection
SOP-8 (Exposed Pad) and 12-Lead WDFN Packages
RoHS Compliant and Halogen Free
Applications
Low Voltage, High Density Power Systems
Distributed Power Systems
Point-of-Load Conversions
Ordering Information
RT8073
Package Type
SP : SOP-8 (Exposed Pad-Option 2)
QW : WDFN-12L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
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.
Marking Information
RT8073GSP
RT8073GSP : Product Number
RT8073
GSPYMDNN
YMDNN : Date Code
RT8073GQW
5C= : Product Code
5C=YM
DNN
YMDNN : Date Code
Simplified Application Circuit
V
IN
C
IN
EN
COMP
R
C
C
C
R
T
RT
GND
FB
R
FB2
VIN
RT8073
LX
C
OUT
BOOT
C
BOOT
L
V
OUT
R
FB1
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS8073-01
November 2012
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
