RT6266
2.4A, 36V, 100kHz Asynchronous Step-Down Converter with
Load Line Compensation
General Description
The RT6266 is a high-efficiency, monolithic
asynchronous step-down DC/DC converter that can
deliver up to 2.4A output current from a 7.5V to 36V
input supply. The RT6266’s current mode architecture
with internal compensation is optimized for 5V car
charger application over a wide range of loads and
output capacitors. Cycle-by-cycle current limit provides
protection against shorted outputs and soft-start
eliminates input current surge during start-up. The
RT6266 also provides output over voltage protection
output under voltage protection and thermal shutdown
protection. The low current (<3A) shutdown mode
provides output disconnect, enabling easy power
management in battery-powered systems. The RT6266
is available in a SOP-8 (Exposed Pad) package.
Features
2%
High Accuracy Feedback Voltage
7.5V to 36V Input Voltage Range
2.4A Continuous Output Current (2.7A Peak)
CC/CV Mode Control
Adjustable Load Line Compensation
Short Circuit Protection
Integrated N-MOSFET Switches
Current Mode Control
Fixed Frequency Operation : 100kHz
Programmable Output Current Limit
110m Internal Power MOSFET Switch
Lowe EMI signature
Up to 95% Efficiency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Output Under Voltage Protection
Thermal Shutdown Protection
Ordering Information
RT6266
Package Type
SP: SOP-8(Exposed Pad-Option 2)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
Applications
USB Power Supplies
Automotive Cigarette Lighter Adapters
Power Supply for Linear Chargers
DC/DC Converters with Current Limited
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Marking Information
RT6266
GSPYMDNN
RT6266GSP : Product Number
YMDNN : Date Code
Suitable for use in SnPb or Pb-free soldering processes.
Simplified Application Circuit
C
BOOT
L1
D1
V
IN
C
IN
R
EN
VIN
RT6266
BOOT
GND
EN
FB
SW
R1
R
SENSE
C
OUT
V
OUT
CSP
CSN
R2
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6266-00
March 2015
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
