RT6212A/B
2A, 18V, 500kHz, ACOTTM Step-Down Converter
General Description
Features
Integrated 163m/86m MOSFETs
4.5V to 18V Supply Voltage Range
500kHz Switching Frequency
The RT6212A/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 RT6212A/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.
ACOT Control
Feedback Reference Voltage 0.8V ± 1.5%
Feedback Reference Voltage 0.765V ± 1.5%
Internal Start-Up into Pre-Biased Outputs
Compact Package : TSOT-23-6 Pin
Input Under-Voltage Lockout
Over-Current Protection and Hiccup
Applications
Set-Top Boxes
Portable TVs
Ordering Information
(
)
RT6212A/B
Access Point Routers
DSL Modems
LCD TVs
Package Type
J6F : TSOT-23-6 (FC)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Marking Information
Reference Voltage
None : VREF = 0.8V
R : VREF = 0.765V
RT6212AHRGJ6F
2W= : Product Code
DNN : Date Code
2W=DNN
UVP Option
H : Hiccup
RT6212BHRGJ6F
2V= : Product Code
PSM/PWM
A : PSM/PWM
B : Force-PWM
DNN : Date Code
2V=DNN
RT6212AHGJ6F
Note :
Richtek products are :
0B= : Product Code
DNN : Date Code
0B=DNN
RoHS compliant and compatible with the current
RT6212BHGJ6F
requirements of IPC/JEDEC J-STD-020.
0A= : Product Code
Suitable for use in SnPb or Pb-free soldering
DNN : Date Code
0A=DNN
processes.
Simplified Application Circuit
RT6212A/B
BOOT
C
BOOT
L
VIN
V
IN
C
IN
V
LX
FB
OUT
C
OUT
Enable
EN
R1
R2
C
FF
GND
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6212A/B-08 August 2018
www.richtek.com
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
