RT3661AB
Ordering Information
RT3661AB
Package Type
QW : WQFN-40L 5x5 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
Pin Configuration
(TOP VIEW)
NC
NC
BOOT
UGATE
PHASE
LGATE
PVCC
LGATE_NB
PHASE_NB
UGATE_NB
40 39 38 37 36 35 34 33 32 31
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT3661AB
GQW
YMDNN
RT3661ABGQW : Product Number
YMDNN : Date Code
NC
NC
PGOOD
RGND
COMP
FB
VSEN_NB
VSEN
ISEN1P
ISEN1N
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15 16 17 18 19 20
41
30
29
28
27
26
25
24
23
22
21
GND
BOOT_NB
EN
VIN
COMP_NB
FB_NB
ISENP_NB
ISENN_NB
TSEN_NB
VDDIO
SVT
Functional Pin Description
Pin No.
1, 2, 39, 40
3
Pin Name
NC
PGOOD
No internal connection.
Power good indicator for the VDD and VDDNB controller. This pin is an
open drain output.
Return ground of VDD and VDDNB controllers. This pin is the common
negative input of output voltage differential remote sense of VDD and
VDDNB controllers.
Error amplifier output pin of the VDD controller.
Output voltage feedback input of VDD controller. This pin is the negative
input of the error amplifier for the VDD controller.
VDDNB controller voltage sense input. This pin is connected to the terminal
of VDDNB controller output voltage.
VDD controller voltage sense input. This pin is connected to the terminal of
VDD controller output voltage.
Positive current sense input for VDD controller.
Negative current sense input for VDD controller.
Thermal indicator. This pin is an open drain output. (Active low)
This pin provides two functions : platform setting, platform can use this pin to
set frequency of VDD and VDDNB controllers, initial offset and per-phase
OCP threshold of VDD Controller. The other function is thermal sense input
for VRHOT indicator. Connect the NTC network for thermal sensing to this
pin.
is a registered trademark of Richtek Technology Corporation.
Pin Function
4
5
6
7
8
9
10
11
RGND
COMP
FB
VSEN_NB
VSEN
ISEN1P
ISEN1N
VRHOT_L
12
TSEN
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
VRHOT_L
TSEN
SET1
IMON
VREF_PINSET
IMON_NB
VCC
PWROK
SVC
SVD
WQFN-40L 5x5
DS3661AB-05
May
2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
