RT8068A Datasheet, PDF (1/13 Pages) Richtek Technology Corporation – 3A, 1MHz, Synchronous Step-Down Converter

RT8068A
3A, 1MHz, Synchronous Step-Down Converter
General Description
The RT8068A is a high efficiency synchronous, step-down
DC/DC converter. It's input voltage range from 2.7V to 5.5V
that provides an adjustable regulated output voltage from
0.6V to V_IN 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 RT8068A is available in WDFN-10L 3x3 and SOP-8
(Exposed Pad) packages.
Ordering Information
RT8068A
Package Type
QW : WDFN-10L 3x3 (W-Type)
SP : SOP-8 (Exposed Pad-Option 2)
Lead Plating System
Z : ECO (Ecological Element with
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
RT8068AZQW
13 : Product Code
13 YM
DNN
YMDNN : Date Code
Features
z High Efficiency : Up to 95%
z Low R_DS(ON) Internal Switches : 69mΩ/49mΩ at V_IN
= 5V
z Fixed Frequency : 1MHz
z No Schottky Diode Required
z Internal Compensation
z 0.6V Reference Allows Low Output Voltage
z Low Dropout Operation : 100% Duty Cycle
z OCP, UVP, OVP, OTP
z RoHS Compliant and Halogen Free
Applications
z Portable Instruments
z Battery Powered Equipment
z Notebook Computers
z Distrib uted Power Systems
z IP Phones
z Digital Cameras
Pin Configurations
(TOP VIEW)
LX 1
LX 2
LX ³
PGOOD 4
EN 5
10 PVIN
9 PVIN
8 SVIN
7 NC
11 6 FB
WDFN-10L 3x3
LX
LX
PGOOD
EN
8
2
7
GND
3
96
4
5
PVIN
PVIN
SVIN
FB
SOP-8 (Exposed Pad)
RT8068AZSP
RT8068A
ZSPYMDNN
RT8068AZSP : Product Code
YMDNN : Date Code
DS8068A-03 May 2011
www.richtek.com
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