RT5712B
2A, 1MHz, 6V CMCOT Synchronous Step-Down Converter
General Description
The RT5712B is a high efficiency synchronous
step-down DC-DC converter. Its input voltage range is
from 2.7V to 6V and provides an adjustable regulated
output voltage from 0.6V to 3.4V 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 Current Mode
Constant-On-time (CMCOT) operation with internal
compensation allows the transient response to be
optimized over a wide range of loads and output
capacitors.
Features
Efficiency Up to 95%
R
DSON
100m HS / 70m LS
V
IN
Range 2.7V to 6V
V
REF
0.6V with
1.5%
Accuracy
CMCOT
™
Control Loop Design
for
Best
Transient Response, Robust Loop Stability with
Low-ESR (MLCC) C
OUT
Fixed Soft-Start 1.2ms
Cycle-by-Cycle Over-Current Protection
Input Under-Voltage Lockout
Output Under-Voltage Protection (UVP Hiccup)
Thermal Shutdown Protection
Applications
Marking Information
RT5712BHGQW
3K : Product Code
W : Date Code
STB, Cable Modem, & xDSL Platforms
LCD TV Power Supply & Metering Platforms
General Purpose Point of Load (POL)
3KW
Ordering Information
RT5712B
Package Type
QW : WDFN-6L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Option
H : Hiccup
L : Latch-Off
Note :
Richtek products are :
RT5712BLGQW
3J : Product Code
W : Date Code
3JW
Pin Configuration
(TOP VIEW)
GND
NC
EN
VIN
1
2
3
6
5
4
FB
GND
LX
7
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
WDFN-6L 2x2
Suitable for use in SnPb or Pb-free soldering processes.
Simplified Application Circuit
L
V
IN
C
IN
VIN
LX
R1
C
OUT
R2
V
OUT
RT5712B
EN
FB
GND
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5712B-04
June 2019
www.richtek.com
1
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