參數(shù)資料
型號： LTC1699-81
廠商： Linear Technology Corporation
英文描述： SMBus VID Voltage Programmers(SMBus接口 VID電壓編程器)
中文描述： VID電壓編程的SMBus（西元的SMBus接口電壓編程器）
文件頁數(shù)： 3/20頁
文件大小： 250K
代理商： LTC1699-81
LTC1699 Series
3
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. 2.7V
≤
V
CC
≤
5.5V (Notes 3, 4) unless otherwise stated.
The
G
denotes the specifications which apply over the full operating
SYMBOL
I
SK1
PARAMETER
SDA, PGOOD, CPU_ON, IO_ON,
CLK_ON Sink Current at V
CC
= 2.7V
SDA, PGOOD, CPU_ON, IO_ON,
CLK_ON Sink Current at V
CC
= 5.5V
PGOOD, CPU_ON, IO_ON,
CLK_ON Leakage Current
VRON Pull-Up Current
Timing (Note 5)
f
SMB
SMBus Operating Frequency
t
BUF
Bus Free Time Between Stop/Start
t
HD:STA
Hold Time After (Repeated) Start
t
SU:STA
Repeated Start Setup Time
t
SU:STO
Stop Condition Setup Time
t
HD:DAT
Data Hold Time
t
SU:DAT
Data Setup Time
t
LOW
Clock Low Period
t
HIGH
Clock High Period
t
f
SCL, SDA Fall Time
t
r
SCL, SDA Rise Time
t
SSH
SEL to SENSE High (Note 6)
CONDITIONS
0
≤
V
PIN
≤
2.7V
MIN
5
TYP
19
MAX
60
UNITS
mA
G
I
SK2
0
≤
V
PIN
≤
5.5V
G
35
65
150
mA
I
LKG
0
≤
V
PIN
≤
5.5V
G
±
2
μ
A
I
PU
V
PIN
= 0
G
–1
–2.5
–7
μ
A
G
10
4.7
4.0
4.7
4.0
300
250
4.7
4.0
100
KHz
μ
s
μ
s
μ
s
μ
s
ns
ns
μ
s
μ
s
ns
ns
ns
G
G
G
G
G
G
G
G
0.9V
CC
to 0.65V
0.65V to 2.25V
Toggle SEL to Switch from Min V
OUT
to Max V
OUT
,
VFB = 0.8V
Toggle SEL to Switch from Max V
OUT
to Min V
OUT
,
VFB = 0.8V
Toggle SEL to Select New Code
C
L
= 100pF, 10k
Pull-Up, S2 in Figure 1
C
L
= 100pF, 10k
Pull-Up, S2 in Figure 1
G
300
1000
G
500
t
SSL
SEL to SENSE Low (Note 6)
500
ns
t
SPL
SEL Toggling to PGOOD Low
G
160
500
ns
t
PH
Stop Bit to CPU_ON, IO_ON
or CLK_ON High (Note 7)
Stop Bit to CPU_ON, IO_ON
or CLK_ON Low (Note 7)
Stop Bit to PGOOD Low (Note 6)
VRON High to CPU_ON, IO_ON
or CLK_ON High
VRON Low to CPU_ON, IO_ON,
CLK_ON Low
VRON Low to PGOOD Low
PGOOD Low Duration
G
2
μ
s
t
PL
C
L
= 0.1
μ
F, 10k
Pull-Up, S1 in Figure 1
G
20
50
μ
s
t
PPL
t
VH
C
L
= 100pF, 10k
Pull-Up, S2 in Figure 1
C
L
= 100pF, 10k
Pull-Up, S2 in Figure 1
G
250
2
ns
μ
s
G
t
VL
C
L
= 0.1
μ
F, 10k
Pull-Up, S1 in Figure 1
G
50
μ
s
t
VPL
t
PGL
C
L
= 100pF, 10k
Pull-Up, S2 in Figure 1
C
L
= 100pF, 10k
Pull-Up, S2 in Figure 1
G
130
50
500
70
ns
μ
s
G
30
Note1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC1699-80E, LTC1699-81E and LTC1699-82E are
guaranteed to meet performance specifications from 0
°
C to 70
°
C.
Specifications over the –40
°
C to 85
°
C operating temperature range are
assured by design, characterization and correlation with statistical process
controls.
Note 3:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 4:
All typical numbers are given for V
CC
= 5V and T
A
= 25
°
C.
Note 5:
These parameters are guaranteed by design and are not tested in
production. SMBus timing is referenced to V
IL
and V
IH
levels.
Note 6:
Dominated by the switching regulator. The delay due to the
LTC1699-80, LTC1699-81 or LTC1699-82 is typically 500ns.
Note 7:
Measured from the rising edge of SDA during Data High
acknowledgement.
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