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参数资料
| 型号： | LTC2941IDCB-1#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229TBD, DFN-6 |
| 文件页数： | 10/16页 |
| 文件大小： | 206K |
| 代理商： | LTC2941IDCB-1#TRPBF |
LTC2941-1
29411f
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Digital Inputs and Digital Outputs
VITH
Logic Input Threshold, AL/CC, SCL,
SDA
l
0.3 VSENSE+
0.7 VSENSE+
V
VOL
Low Level Output Voltage, AL/CC, SDA I = 3mA
l
0.4
V
IIN
Input Leakage, AL/CC, SCL, SDA
VIN = VSENSE+/2
l
1
A
CIN
Input Capacitance, AL/CC, SCL, SDA
(Note 7)
l
10
pF
tPCC
Minimum Charge Complete (CC) Pulse
Width
1
s
I2C Timing Characteristics
fSCL(MAX)
Maximum SCL Clock Frequency
l
400
900
kHz
tBUF(MIN)
Bus Free Time Between Stop/Start
l
1.3
s
tSU,STA(MIN) Minimum Repeated Start Setup Time
l
600
ns
tHD,STA(MIN) Minimum Hold Time (Repeated)
Start Condition
l
600
ns
tSU,STO(MIN) Minimum Setup Time for Stop
Condition
l
600
ns
tSU,DAT(MIN) Minimum Data Setup Time Input
l
100
ns
tHD,DATI(MIN) Minimum Data Hold Time Input
l
0
s
tHD,DATO
Data Hold Time Output
l
0.3
0.9
s
tof
Data Output Fall Time
(Notes 6, 7)
l
20 + 0.1 CB
300
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive, all voltages are referenced to
GND unless otherwise specified
Note 3: ISUPPLY = ISENSE+ + ISENSE–
Note 4: The equivalent charge of an LSB in the accumulated charge
registers (C,D) depends on the setting of the internal pre-scaling factor M.
It is calculated by:
qLSB = 0.085mAh
M
128
See Choosing Coulomb Counter Prescaler M section for more information.
1mAh = 3.6A s = 3.6C (Coulomb), 0.085mAh = 306mC.
Note 5: Deviation of qLSB from its nominal value. Data is for a new device
and does not include long-term sense resistor aging. See the Internal
Sense Resistor section for more information.
Note 6: CB = capacitance of one bus line in pF (10pF ≤ CB ≤ 400pF).
Note 7: Guaranteed by design, not subject to test.
Note 8: Value decreases if exposed pad is soldered to large copper area.
See Power Dissipation section for more information.
Timing Diagram
tSU, DAT
tSU,STO
tSU,STA
tBUF
tHD,STA
tHD,DATO,
tHD,DATI
tHD,STA
START
CONDITION
STOP
CONDITION
REPEATED START
CONDITION
START
CONDITION
SDA
SCL
29411 F01
tof
Figure 1. Definition of Timing on I2C Bus
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