RT3667BY
Pin No.
43, 44, 45,
47, 48, 49
46
53
(Exposed Pad)
Pin Name
NC
DVD
GND
No internal connection.
External driver power supply input voltage detection pin.
Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
Pin Function
Functional Block Diagram
PWROK
VDDIO
SVD
SVC
SVT
PGOODA
PGOOD
VSEN
VSENA
OCP_L
OFSA
SET1
SET2
DVD
VCC
OFS
EN
IMONI
IMONAI
SET3
MUX
ADC
IBIAS
From Control Logic
RGND
DAC
VSETA
ERROR
AMP
+
-
UVLO
GND
SVI2 Interface
Configuration Registers
Control Logic
OFS/OFSA
Load Line
/Load Line A
RSET/RSETA
OCP Threshold
PWM
CMPA
QRA
TONA
Loop Control
Protection Logic
TONSETA
PWMA1
TON
GENA
PWMA2
Soft-Start & Slew
Rate Control
FBA
COMPA
ISENA1P
ISENA1N
Offset
Cancellation
+
+
-
Current mirror
+
x2
-
IBA1
V064
Current mirror
0.4 * A
i_VDDNB
+
-
RSETA
IMONAI
Current Balance
IBA1
IBA2
ISENA2P
ISENA2N
IMONA
From Control Logic
RGND
DAC
Soft-Start & Slew Rate
Control
+
x2
-
IBA2
Average
OCP_TDCA,
OCP_SPIKEA
+
-
OCA
VSENA
To Protection Logic
OV/UV/NV
PWM
CMP
QR
TON
TON
GEN
TONSET
PWM1
PWM2
PWM3
PWM4
VSET
ERROR
AMP
+
-
FB
COMP
Offset
Cancellation
+
+
-
Current mirror
ISEN1P
ISEN1N
+
x1
-
IB1
Current mirror
+
-
0.4 * A
i_VDD
RSET
Current Balance
IB1
IB2
IB3
IB4
ISEN2P
ISEN2N
V064
Average
IMONI
+
x1
-
IB2
Current mirror
ISEN3P
ISEN3N
+
x1
-
IB3
Current mirror
ISEN4P
ISEN4N
+
x1
-
IB4
OCP_TDC,
OCP_SPIKE
SET3
+
-
OC
To Protection Logic
OV/UV/NV
VSEN
IMON V064/SET3
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS3667BY-00
September 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
