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PM6670 Datasheet(PDF) 10 Page - STMicroelectronics

Part # PM6670
Description  Complete DDR2/3 memory power supply controller
PDF  53 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6670 Datasheet(HTML) 10 Page - STMicroelectronics

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Electrical characteristics
PM6670
10/53
Symbol
Parameter
Test condition
Values
Unit
Min
Typ
Max
VDDQ output
VVDDQ
VDDQ output voltage, DDR3
MODE connected to AVCC,
DDRSEL tied to SGND, No Load
1.5
V
VDDQ output voltage, DDR2
MODE and DDRSEL connected to
AVCC, No Load
1.8
Feedback Accuracy
-1.5
1.5
%
Current limit and zero crossing comparator
ICSNS
CSNS input bias current
90
100
110
µA
Comparator offset
-5
5
mV
Positive current limit threshold
Rsense = 1k
Ω
VPGND - VCSNS
-100
mV
Fixed negative current limit
threshold
110
mV
VZC,OFFS
Zero crossing comparator
offset
-10
-5
0
mV
High and low side gate drivers
HGATE driver on-resistance
HGATE high state (pull-up)
2.0
3
Ω
HGATE low state (pull-down)
1.8
2.7
LGATE driver on-resistance
LGATE high state (pull-up)
1.4
2.1
LGATE low state (pull-down)
0.6
0.9
UVP/OVP protections and PGOOD SIGNAL (SMPS only)
OVP
Over voltage threshold
112
115
118
%
UVP
Under voltage threshold
67
70
73
PGOOD
Power-good upper threshold
107
110
113
Power-good lower threshold
86
90
93
IPG,LEAK PG leakage current
PG forced to 5V
1
µA
VPG,LOW PG low-level voltage
IPG,SINK = 4mA
150
250
mV
Soft start section (SMPS)
Soft-start ramp time (4 steps
current limit)
23
4
ms
Soft-start current limit step
25
µA
Table 6. Electrical characteristics (continued)



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