RT3667BL
Ordering Information
RT3667BL
Pin Configuration
(TOP VIEW)
Package Type
QW : WQFN-52L 6x6 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
52 51 50 49 48 47 46 45 44 43 42 41 40
1
2
3
4
5
6
7
8
39
38
37
36
35
34
33
32
PWM4
TONSET
ISEN2P
ISEN2N
ISEN1N
ISEN1P
ISEN3P
ISEN3N
ISEN4N
ISEN4P
VSEN
PGOOD
PGOODA
EN
ISENA1P
ISENA1N
ISENA2N
ISENA2P
VSENA
FBA
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.
GND
9
31
30
29
28
27
10
11
12
13
COMPA
IBIAS
VCC
53
Marking Information
RT3667BLGQW : Product Number
FB
COMP
RT3667BL
GQW
YMDNN : Date Code
OCP_L
14 15 16 17 18 19 20 21 22 23 24 25 26
YMDNN
WQFN-52L 6x6
Functional Pin Description
Pin No.
Pin Name
Pin Function
1, 52
PWM4, PWM3
PWM outputs for Channel 3 and 4 of VDD controller.
VDD controller on-time setting. Connect this pin to the converter input
voltage, VIN, through a resistor, RTON, to set the on-time of UGATE and
also the output voltage ripple of VDD controller.
2
TONSET
5, 4, 8, 9
ISEN1N to ISEN4N Negative current sense input of Channel 1, 2, 3 and 4 for VDD controller.
ISEN1P to ISEN4P Positive current sense input of Channel 1, 2, 3 and 4 for VDD controller.
6, 3, 7, 10
VDD controller voltage sense input. This pin is connected to the terminal
of VDD controller output voltage.
11
VSEN
Output voltage feedback input of VDD controller. This pin is the negative
input of the error amplifier for the VDD controller.
12
13
FB
COMP
RGND
Compensation node of the VDD controller.
Return ground of VDD and VDDNB controller. This pin is the common
negative input of output voltage differential remote sense for VDD and
VDDNB controllers.
14
15
Current monitor output for the VDD controller. This pin outputs a voltage
proportional to the output current.
IMON
This pin provides two functions: Fixed 0.64V Reference Voltage Output
and Current Gain Ratio Setting for VDD and VDDNB Controller. Connect a
resistive voltage divider from VCC to GND and connect the joint of the
voltage divider to this pin for current gain ration setting. The pin also used
to offset the output voltage of the IMON pin and the IMONA pin. Bypass
this pin to GND with the 22nF ceramic capacitor for noise decoupling and
pin setting accuracy.
16
V064/SET3
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS3667BL-00 September 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
