RT8061A Datasheet, PDF (1/12 Pages) Richtek Technology Corporation – 3A, 1MHz, Synchronous Step-Down Converter

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RT8061A
3A, 1MHz, Synchronous Step-Down Converter
General Description
The RT8061A is a high efficiency synchronous, step-down
DC/DC converter. Its 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 RT8061A is operated in PWM/PSM mode to achieve
high efficiency for a wide load range. The RT8061A is
available in a WDFN-10L 3x3 package.
Ordering Information
RT8061A
Package Type
QW : WDFN-10L 3x3 (W-Type)
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.
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 0.6V Reference Allows Low Output Voltage
z PWM/PSM Mode Operation
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 Distributed Power Systems
z IP Phones
z Digital Cameras
Pin Configurations
(TOP VIEW)
NC 1
LX 2
LX 3
PGOOD ⁴
EN 5
10 _PVIN
9 _PVIN
8 SVIN
7 NC
11 6 FB
WDFN-10L 3x3
Marking Information
11 : Product Code
11 YM
DNN
YMDNN : Date Code
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8061A-04 September 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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