RT3669EA
Ordering Information
RT3669EA
Package Type
QW : WQFN-32L 4x4 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
Pin Configuration
(TOP VIEW)
EN
PGOOD
NC
LGATE
PVCC
PHASE
UGATE
BOOT
32 31 30 29 28 27 26 25
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
VIN
RGND
COMP
FB
VSEN
ISEN1P
ISEN1N
VRHOT_L
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
24
23
22
21
20
33
19
18
17
GND
LDO_VIN
MUX_CTRL
FBA
LDO_OUT
S5_OUT
VSEN_NB_IN
VDDIO
SVT
Marking Information
3A=YM
DNN
3A= : Product Code
YMDNN : Date Code
Functional Pin Description
Pin No.
1
2
3
4
5
6
7
8
Pin Name
VIN
RGND
COMP
FB
VSEN
ISEN1P
ISEN1N
VRHOT_L
Pin Function
VIN input pin. Connect a low pass filter to this pin.
Return ground of GFX controller. This pin is the common negative input of
output voltage differential remote sense of GFX controller.
Error amplifier output pin of the GFX controller.
Output voltage feedback input of GFX controller. This pin is the negative input
of the error amplifier for the GFX controller.
GFX controller voltage sense input. This pin is connected to the terminal of
GFX controller output voltage.
Positive current sense input for GFX controller.
Negative current sense input for GFX 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, initial offset and per-phase OCP threshold of GFX Controller.
The other function is thermal sense input for VRHOT indicator, so this pin
must to be connected to the NTC network for thermal sense.
Platform setting pin. Platform can use this pin to set AI gain, QRTH of GFX
Controller.
Current monitor output for the GFX controller. This pin outputs a voltage
proportional to the output current.
9
TSEN
10
11
SET1
IMON
12
This pin provides two functions : The 3.2V power supply for pin setting
function divided resistors. The other function is fixed 0.8V output reference
VREF_PINSET voltage, and the voltage is only used to offset the output voltage of IMON pin.
Connect a RC circuit from this pin to GND. The recommended resistor is from
3.9 to 10, and the capacitor is 0.47F.
is a registered trademark of Richtek Technology Corporation.
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
TSEN
SET1
IMON
VREF_PINSET
VCC
PWROK
SVC
SVD
Suitable for use in SnPb or Pb-free soldering processes.
WQFN-32L 4x4
DS3669EA-06
August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
