RT6233A/B
3A Peak, 18V, 500kHz, ACOTTM Step-Down Converter
General Description
Features
Integrated 195m/105m MOSFETs
4.5V to 18V Supply Voltage Range
500kHz Switching Frequency
ACOT Control
The RT6233A/B is a high-efficiency, monolithic
synchronous step-down DC-DC converter that can
deliver up to 3A peak output current from a 4.5V to 18V
input supply. The RT6233A/B adopts ACOT
architecture to allow the transient response to be
improved and keep in constant frequency.
Cycle-by-cycle current limit provides protection against
shorted outputs and soft-start eliminates input current
surge during start-up. Fault conditions also include
output under voltage protection, output over current
protection, and thermal shutdown.
0.8V 1.5% Voltage Reference
Adjustable Soft-Start
Power Good Indicator
Monotonic Start-Up into Pre-biased Outputs
Input Under-Voltage Lockout
Over-Current Protection and Hiccup
Applications
Set-Top Boxes
Portable TVs
Ordering Information
RT6233A/B
Access Point Routers
DSL Modems
LCD TVs
Package Type
QW : WDFN-8L 2x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Marking Information
UVP Option
H : Hiccup
RT6233AHGQW
0T : Product Code
A : PSM Mode
B : PWM Mode
W : Date Code
0TW
Note :
Richtek products are :
RT6233BHGQW
0S : Product Code
RoHS compliant and compatible with the current
W : Date Code
0SW
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Simplified Application Circuit
RT6233A/B
V
IN
VIN
BOOT
C
BOOT
C
IN
L
V
OUT
LX
C
OUT
Enable
EN
R1
R2
C
FF
PGOOD
PGOOD
FB
SS
GND
C
SS
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6233A/B-02 December 2018
www.richtek.com
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
