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LTC3374EFEPBF PDF预览

LTC3374EFEPBF

更新时间： 2022-02-26 10:35:08
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 345K
描述
8-Channel Parallelable 1A Buck DC/DCs

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LTC3374EFEPBF 数据手册

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LTC3374  
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating  
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VCC = VIN1-8 = 3.3V, unless otherwise specified.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
Interface Logic Pins (PBGOOD_ALL, MODE)  
I
Output High Leakage Current  
Output Low Voltage  
PGOOD_ALL 5.5V at Pin  
PGOOD_ALL 3mA into Pin  
MODE  
–1  
1
µA  
V
OH  
V
V
V
0.1  
0.4  
OL  
IH  
IL  
l
l
Input High Threshold  
Input Low Threshold  
1.2  
V
MODE  
0.4  
V
Interface Logic Pins (EN1, EN2, EN3, EN4, EN5, EN6, EN7, EN8)  
l
l
V
V
V
Enable Rising Threshold  
Enable Falling Hysteresis  
Enable Rising Threshold  
Enable Pin Leakage Current  
All Regulators Disabled  
400  
730  
60  
1200  
mV  
mV  
mV  
µA  
HI_ALLOFF  
EN_HYS  
HI  
At Least One Regulator Enabled  
380  
–1  
400  
420  
1
I
EN  
EN = V = V = 5.5V  
CC IN  
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 3: The LTC3374 includes overtemperature protection which protects  
the device during momentary overload conditions. Junction temperatures  
will exceed 150°C when overtemperature protection is active. Continuous  
operation above the specified maximum operating junction temperature  
may impair device reliability.  
Note 2: The LTC3374 is tested under pulsed load conditions such that  
T ≈ T . The LTC3374E is guaranteed to meet specifications from  
Note 4: Static current, switches not switching. Actual current may be  
higher due to gate charge losses at the switching frequency.  
Note 5: The current limit features of this part are intended to protect the  
IC from short term or intermittent fault conditions. Continuous operation  
above the maximum specified pin current rating may result in device  
degradation over time.  
J
A
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  
LTC3374I is guaranteed over the –40°C to 125°C operating junction  
temperature range and the LTC3374H is guaranteed over the –40°C to  
150°C operating junction temperature range. High junction temperatures  
degrade operating lifetimes; operating lifetime is derated for junction  
temperatures greater than 125°C. Note that the maximum ambient  
temperature consistent with these specifications is determined by  
specific operating conditions in conjunction with board layout, the rated  
package thermal impedance and other environmental factors. The junction  
temperature (T in °C) is calculated from ambient temperature (T in °C)  
J
A
and power dissipation (P in Watts) according to the formula:  
D
T = T + (P • θ )  
JA  
J
A
D
where θ (in °C/W) is the package thermal impedance.  
JA  
3374f  
5
For more information www.linear.com/LTC3374  
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