®
RT2652
2A, 1.2MHz Synchronous Step-Down Converter
General Description
The RT2652 is a high efficiency synchronous, step-down
DC/DC converter. The available input voltage range is from
2.7V to 5.5V the regulated output voltage is adjustable
from 0.6V to VIN while delivering up to 2A 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 1.2MHz. The 100% duty cycle provides
low dropout operation extending battery life in portable
systems. Current mode operation with internal
compensation allows the transient response to be
optimized. The RT2652 is available in the WDFN-10L 3x3
package.
Features
High Efficiency : Up to 95%
Fixed Frequency : 1.2MHz
No Schottky Diode Required
Internal Compensation
0.6V Reference Allows Low Output Voltage
100% Duty Cycle for Low Dropout Operation
OCP, UVP, OTP
RoHS Compliant and Halogen Free
Applications
Enterprise Servers
Ethernet Switches & Routers
Global Storage
Telecom & Industrial
Cell Phones & DSC's
Ordering Information
RT2652
Package Type
QW : WDFN-10L 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.
Pin Configurations
(TOP VIEW)
EN
VIN
VIN
AGND
FB
PGND
1
2
3
4
5
10
9
8
7
6
11
PGND
PGND
LX
LX
AGND
WDFN-10L 3x3
Marking Information
0K= : Product Code
0K=YM
DNN
YMDNN : Date Code
Simplified Application Circuit
RT2652
V
IN
VIN
LX
V
OUT
EN
FB
AGND PGND
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS2652-00
November 2012
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
