RT6232A/B
2A, 18V, 500kHz, ACOT
TM
Step-Down Converter
General Description
The RT6232A/B is a high-efficiency, monolithic
synchronous step-down DC/DC converter that can
deliver up to 2A output current from a 4.5V to 18V input
supply. The RT6232A/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.
Features
Integrated 210m/120m MOSFETs
4.5V to 18V Supply Voltage Range
500kHz Switching Frequency
ACOT Control
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
Ordering Information
RT6232A/B
Package Type
QW : WDFN-8L 2x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Option
H : Hiccup
A : PSM Mode
B : PWM Mode
Note :
Richtek products are :
Applications
Set-Top Boxes
Portable TVs
Access Point Routers
DSL Modems
LCD TVs
Marking Information
RT6232AHGQW
0V : Product Code
W : Date Code
0VW
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
RT6232BHGQW
0U : Product Code
W : Date Code
Suitable for use in SnPb or Pb-free soldering processes.
0UW
Simplified Application Circuit
RT6232A/B
V
IN
C
IN
LX
Enable
PGOOD
EN
PGOOD
FB
R2
SS
C
SS
GND
R1
C
FF
C
OUT
VIN
BOOT
C
BOOT
L
V
OUT
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation
DS6232A/B-02
December
2018
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
