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PM6670AS Datasheet(PDF) 18 Page - STMicroelectronics

Part # PM6670AS
Description  Complete DDR2/3 memory power supplies controller
PDF  54 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6670AS Datasheet(HTML) 18 Page - STMicroelectronics

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Block diagram
PM6670AS
18/54
6
Block diagram
Figure 25.
Functional and block diagram
VREF
VOSC
VTTGND
VTT
LDOIN
VTTREF
AVCC
SGND
DDRSEL
DSCG
VTTSNS
VCC
MODE
S3
S5
CSNS
HGATE
LGATE
PHASE
BOOT
PGND
VSNS
COMP
CONTROL LOGIC
Zero Crossing &
Current Limit
PG
Vr -10
%
Vr +10
%
+
-
+
-
gm
+
-
Vr
+
_
VREF
R
R
Level
shifter
1.236V
Bandgap
Vr = 0.9V
NTD
NTD
NTD
NTD
HIZ
HIZ
BEN
BEN
TD
TD
Ton
UVLO
SWEN
SWEN
Vr
Anti Cross
Conduction
Ton
min
Toff
min
1-shot
1-shot
1-shot
fix
adj
DDR3
UVP/OVP
Thermal Shutdown
VREF
VOSC
VTTGND
VTT
LDOIN
VTTREF
AVCC
SGND
DDRSEL
DSCG
VTTSNS
VCC
MODE
S3
S5
CSNS
HGATE
LGATE
PHASE
BOOT
PGND
VSNS
COMP
CONTROL LOGIC
Zero Crossing &
Current Limit
PG
Vr -10
%
Vr +10
%
+
-
+
-
gm
+
-
Vr
+
_
VREF
R
R
Level
shifter
1.236V
Bandgap
Vr = 0.9V
NTD
NTD
NTD
NTD
HIZ
HIZ
BEN
BEN
TD
TD
Ton
UVLO
SWEN
SWEN
Vr
Anti Cross
Conduction
Ton
min
Toff
min
1-shot
1-shot
1-shot
fix
adj
DDR3
UVP/OVP
Thermal Shutdown
VTTGND
VTT
LDOIN
VTTREF
AVCC
SGND
DDRSEL
DSCG
VTTSNS
VCC
MODE
S3
S5
CSNS
HGATE
LGATE
PHASE
BOOT
PGND
VSNS
COMP
CONTROL LOGIC
Zero Crossing &
Current Limit
PG
Vr -10
%
Vr +10
%
+
-
+
-
gm
+
-
Vr
+
_
VREF
R
R
Level
shifter
1.236V
Bandgap
Vr = 0.9V
NTD
NTD
NTD
NTD
HIZ
HIZ
BEN
BEN
TD
TD
Ton
UVLO
SWEN
SWEN
Vr
Anti Cross
Conduction
Ton
min
Toff
min
1-shot
1-shot
1-shot
fix
adj
DDR3
UVP/OVP
Thermal Shutdown
VCC
MODE
S3
S5
CSNS
HGATE
LGATE
PHASE
BOOT
PGND
VSNS
COMP
CONTROL LOGIC
Zero Crossing &
Current Limit
PG
Vr -10
%
Vr +10
%
+
-
+
-
gm
+
-
Vr
+
_
VREF
R
R
Level
shifter
1.236V
Bandgap
Vr = 0.9V
NTD
NTD
NTD
NTD
HIZ
HIZ
BEN
BEN
TD
TD
Ton
UVLO
SWEN
SWEN
Vr
Anti Cross
Conduction
Ton
min
Toff
min
1-shot
1-shot
1-shot
fix
adj
DDR3
UVP/OVP
Thermal Shutdown
Table 7.
Legend
SWEN
Switching controller enable
TD
Tracking discharge enable
NTD
Non-tracking discharge enable
BEN
VTTREF buffer enable
HIZ
LDO high impedance mode enable



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