RT3667BT
Pin No.
Pin Name
Pin Function
43, 44, 45,
47, 48, 49
NC
DVD
No internal connection.
46
External driver power supply input voltage detection pin.
53
Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
GND
(Exposed Pad)
Functional Block Diagram
UVLO
MUX
ADC
GND
OFS/OFSA
SVI2 Interface
Configuration Registers
Control Logic
IBIAS
Loop Control
Protection Logic
Load Line
/Load Line A
RSET/RSETA
OCP Threshold
From Control Logic
TONSETA
PWMA1
RGND
DAC
PWM
CMPA
ERROR
VSETA
Soft-Start & Slew
Rate Control
AMP
+
TON
GENA
+
Offset
Cancellation
-
+
QRA
-
PWMA2
TONA
FBA
COMPA
Current mirror
0.4 * A
+
i_VDDNB
IMONAI
ISENA1P
ISENA1N
+
x2
IBA1
-
V064
-
RSETA
Current mirror
IBA2
Current Balance
ISENA2P
ISENA2N
+
Average
x2
-
IBA1
IBA2
IMONA
+
-
OCA
To Protection Logic
OV/UV/NV
OCP_TDCA,
OCP_SPIKEA
From Control Logic
VSENA
TONSET
RGND
DAC
PWM1
PWM2
PWM3
PWM4
ERROR
AMP
PWM
CMP
Soft-Start & Slew Rate
Control
VSET
Offset
Cancellation
+
-
+
-
TON
GEN
FB
+
QR
COMP
Current mirror
IB1
TON
ISEN1P
ISEN1N
+
0.4 * A
x1
i_VDD
+
-
-
RSET
Current mirror
IB2
V064
ISEN2P
ISEN2N
+
x1
-
Current Balance
IB2 IB3
Average
IMONI
Current mirror
IB3
IB1
IB4
ISEN3P
ISEN3N
+
x1
-
Current mirror
IB4
ISEN4P
ISEN4N
+
+
-
OC
x1
To Protection Logic
OV/UV/NV
OCP_TDC,
OCP_SPIKE
-
VSEN
SET3
IMON V064/SET3
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is a registered trademark of Richtek Technology Corporation.
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4
DS3667BT-00 September 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
