參數(shù)資料
型號: LTC2941CDCB#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO6
封裝: 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6
文件頁數(shù): 10/16頁
文件大?。?/td> 199K
代理商: LTC2941CDCB#TRPBF
LTC2941
3
2941fa
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
VBAT Alert
VBAT Alert Threshold
VSENSE+ Falling, B[7:6] = 01
l
2.75
2.8
2.85
V
VSENSE+ Falling, B[7:6] = 10
l
2.85
2.9
2.95
V
VSENSE+ Falling, B[7:6] = 11
l
2.95
3
3.05
V
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 Set-Up
Time
l
600
ns
tHD,STA(MIN) Minimum Hold Time (Repeated)
START Condition
l
600
ns
tSU,STO(MIN) Minimum Set-Up Time for STOP
Condition
l
600
ns
tSU,DAT(MIN) Minimum Data Set-Up 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 value of RSENSE and the setting of the
internal prescaling factor M. It is calculated by:
qLSB =0.085mAh
50m
RSENSE
M
128
See Choosing RSENSE and 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.
Note 6: CB = capacitance of one bus line in pF (10pF ≤ CB ≤ 400pF).
Note 7: Guaranteed by design, not subject to test.
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