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LTC4255CG PDF预览

LTC4255CG

更新时间: 2024-11-08 23:16:47
品牌 Logo 应用领域
凌特 - Linear 电源电路电源管理电路光电二极管控制器
页数 文件大小 规格书
16页 209K
描述
Quad Network Power Controller with I2C Compatible Interface

LTC4255CG 技术参数

是否Rohs认证:不符合生命周期:Transferred
零件包装代码:SSOP包装说明:SSOP, SSOP28,.3
针数:28Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16Is Samacsys:N
其他特性:ADDITIONAL -48V NEGATIVE SUPPLY REQUIRED可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G28
JESD-609代码:e0长度:10.2 mm
湿度敏感等级:1信道数量:4
功能数量:1端子数量:28
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP28,.3封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):235
电源:12,-48 V认证状态:Not Qualified
座面最大高度:2 mm子类别:Power Management Circuits
最大供电电压 (Vsup):13.2 V最小供电电压 (Vsup):10.8 V
标称供电电压 (Vsup):12 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20宽度:5.3 mm
Base Number Matches:1

LTC4255CG 数据手册

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LTC4255  
Quad Network Power  
2
Controller with I C Compatible Interface  
U
FEATURES  
DESCRIPTIO  
The LTC®4255 is a quad –48V network power controller  
with independent relay drivers and I2C compatible inter-  
face. Each channel can be turned on and off via software  
control, while providing short-circuit protection, open-  
circuit detection, and power good indication. The short-  
circuit protection includes a current foldback feature to  
reduce power dissipation in the switch during shorts and  
start-up.  
Controls Four Independent –48V Power Channels  
Each Channel has Separate Relay Drivers, ON/OFF  
Control, Short-Circuit Protection with Current  
Foldback, Open-Circuit Detection, and Power Good  
Indication  
Programmed via I2CTM Compatible Interface  
Five Bit Programmable Digital Address Allows  
Control of up to 32 LTC4255s (128 Channels)  
Interrupt on FAULT Output can be used to Eliminate  
Software Polling  
The serial interface allows up to 128 channels to be  
controlled with only two digital lines. A FAULT output can  
be used as an interrupt line to eliminate fault detection by  
software polling.  
Programmable Current Limit and Open-Circuit  
Duration Periods  
Programmable Latchoff or Autoretry after Short-  
Circuit Faults  
Programmable Autoretry Duty Cycle  
External switches and current sense resistors allow easy  
scaling of current and power dissipation levels and pro-  
vide the maximum protection against voltage and current  
spikes.  
U
APPLICATIO S  
The LTC4255 is available in the 28-pin SSOP package.  
IP Phone Systems  
DTE Power Distribution  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
I2C is a trademark of Philips Electronics N.V.  
U
TYPICAL APPLICATIO  
12V  
0.1µF  
V
CC  
SCL  
SDA  
FAULT  
AD0  
AD1  
AD2  
AD3  
AD4  
RELAY1  
RELAY2  
LTC4255  
RELAY3  
RELAY4  
DGND AGND  
V
SENSE1 GATE1 OUT1 SENSE2 GATE2 OUT2 SENSE3 GATE3 OUT3 SENSE4 GATE4 OUT4  
EE  
R
100k  
100k  
100k  
100k  
S1  
0.33Ω  
0.1µF  
–48V  
Q1  
R
S2  
0.33Ω  
Q2  
R
S3  
0.33Ω  
Q3  
R
S4  
0.33Ω  
Q1, Q2, Q3, Q4: FDC3612  
RELAYS: V23079 SERIES  
4255 TA01  
Q4  
4255f  
1

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