®
RT5710C
1A, 1.5MHz, 6V CMCOT Synchronous Step-Down Converter
General Description
The
RT5710C is a high efficiency synchronous step-down
DC-DC converter. Its input voltage range is from 2.5V to
6V and provides an adjustable regulated output voltage
from 0.6V to 3.4V while delivering up to 1A 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
DS(ON)
160mΩ HS / 110mΩ LS
Ω
Ω
V
IN
Range 2.5V to 6V
V
REF
0.6V with
±
2% Accuracy
CMCOT
TM
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
Power Saving at Light Load
Ordering Information
RT5710C
Package Type
QW : WDFN-6L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Option
H : Hiccup
Applications
STB, Cable Modem, & xDSL Platforms
LCD TV Power Supply & Metering Platforms
General Purpose Point of Load (POL)
Note :
�½
Pin Configuration
(TOP VIEW)
GND
NC
EN
VIN
1
2
3
6
5
4
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
�½
FB
GND
LX
Suitable for use in SnPb or Pb-free soldering processes.
7
Marking Information
3D : Product Code
WDFN-6L 2x2
3DW
W : Date Code
Simplified Application Circuit
V
IN
C
IN
VIN
LX
L
V
OUT
R1
C
OUT
R2
RT5710C
EN
FB
GND
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5710C-04
November 2019
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
