RT2855A/B
Applications
Ordering Information
RT2855A/B
Package Type
QW : WQFN-16L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
H : Hiccup Mode OVP & UVP
L : Latched OVP & UVP
A : PSM
B : PWM
Note :
Richtek products are :
�½
Industrial and Commercial Low Power Systems
Computer Peripherals
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation for High-Performance DSPs,
FPGAs, and ASICs
Marking Information
RT2855AHGQW
4G= : Product Code
4G=YM
DNN
YMDNN : Date Code
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.
�½
RT2855ALGQW
4F= : Product Code
4F=YM
DNN
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
VS
VCC
VIN
VIN
16 15 14 13
RT2855BHGQW
4E= : Product Code
4E=YM
DNN
YMDNN : Date Code
FB
VREG5
SS
GND
1
2
3
4
5
6
12
GND
17
7
8
11
10
9
BOOT
SW
SW
SW
RT2855BLGQW
4D= : Product Code
4D=YM
DNN
YMDNN : Date Code
WQFN-16L 3x3
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
PGOOD
EN
PGND
PGND
DS2855A/B-01
September 2015
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
