RT2702 Datasheet, PDF (1/20 Pages) Richtek Technology Corporation – Step-Down DC-DC Controller

®
RT2702
Step-Down DC-DC Controller with Remote Sense
General Description
The RT2702 is a high-efficiency and high-current
synchronous buck controller designed to drive a DrMOS
module. A COT (Constant-On-Time) PWM controller and
PWM signal for DrMOS are integrated so that the external
circuit is easily designed and the component count is
reduced. The RT2702 adopts FCOT control technology
that responds instantly to input voltage change. Besides,
the RT2702 includes a 5V (VDRV) linear regulator, which
can provide 5V voltage and supply up to 100mA for DrMOS.
The RT2702 supports two modes transition function with
various operating states, which include audio skipping
mode (ASM) and forced-CCM mode (FCCM).
Other features include power good indication, external soft-
start setting, soft-off discharge function, precise DCR
sense, enable/disable control, over-voltage protection
(OVP), under-voltage protection (UVP), current Limit,
thermal shutdown into the WQFN-16L 3x3 package.
Ordering Information
RT2702
Package Type
QW : WQFN-16L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
 RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
 Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
8H= : Product Code
8H=YM
DNN
YMDNN : Date Code
Features
 4.5V to 19V Input Voltage Range
 Adjustable Output Range, 0.6V Reference with 1%
Accuracy Over-Temperature Protection
 FCOT^TM (Flexible Constant On Time) Control
 Integrated 5V LDO@100mA for DrMOS module
 Support Pre-Biased Output
 Programmable Soft-Start
 Soft-Off through V_OUT Discharge
 Programmable Switching Frequency
 Programmable Over Current Limit
 Power Good Indication
 OVP, UVP, UVLO Protection
Applications
 High Current Distributed Power Systems
 Datacom and Telecom Systems
 Industrial Power Supplies
Pin Configuration
(TOP VIEW)
16 15 14 13
MODE 1
PWM 2
DISB 3
THWN 4
GND
17
12 EN
11 POK
10 ILIM
9 SS
5 678
WQFN-16L 3x3
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS2702-00 October 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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