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參數(shù)資料
| 型號(hào)： | LTC4155IUFD#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC28 |
| 封裝： | 5 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WXXX-X, QFN-28 |
| 文件頁數(shù)： | 51/52頁 |
| 文件大?。?/td> | 473K |
| 代理商： | LTC4155IUFD#TRPBF |
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LTC4155
8
4155f
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA ≈ TJ = 25°C (Note 2). VBUS = 5V, BATSNS = 3.7V, DVCC = 3.3V,
RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IIL,SDA,SCL
Input Leakage Low
SDA, SCL = 0V
–1
1
A
VOL
Digital Output Low (SDA)
ISDA = 3mA
0.4
V
fSCL
Clock Operating Frequency
400
kHz
tBUF
Bus Free Time Between STOP and
START Condition
1.3
s
tHD_SDA
Hold Time After (Repeated) START
Condition
0.6
s
tSU_SDA
Repeated START Condition Set-Up
Time
0.6
s
tSU_STO
STOP Condition Time
0.6
s
tHD_DAT(OUT) Data Hold Time
0
900
ns
tHD_DAT(IN)
Input Data Hold Time
0
ns
tSU_DAT
Data Set-Up Time
100
ns
tLOW
Clock LOW Period
1.3
s
tHIGH
Clock HIGH Period
0.6
s
tf
Clock Data Fall Time
20
300
ns
tr
Clock Data Rise Time
20
300
ns
tSP
Spike Suppression Time
50
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: The LTC4155E is tested under pulsed load conditions such that
TJ ≈ TA. The LTC4155E is guaranteed to meet performance specifications
from 0°C to 85°C junction temperature. Specifications over the
–40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC4155I is guaranteed over the full –40°C to 125°C operating
junction temperature range. The junction temperature (TJ, in °C) is
calculated from the ambient temperature (TA, in °C) and power dissipation
(PD, in watts) according to the formula:
TJ = TA + (PD θJA), where the package thermal impedance
θJA = 43°C/W)
Note that the maximum ambient temperature is determined by specific
operating conditions in conjunction with board layout, the rated package
thermal resistance and other environmental factors.
Note 3. VMAX is the maximum of VBUS or BATSNS
Note 4. Total input current is IVBUSQ + VCLPROG/RCLPROG (hCLPROG + 1).
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