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UCC1917 PDF预览

UCC1917

更新时间: 2024-01-08 10:15:51
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
9页 230K
描述
Positive Floating Hot Swap Power Manager

UCC1917 技术参数

是否Rohs认证:不符合生命周期:Obsolete
零件包装代码:DIP包装说明:DIP, DIP16,.3
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.92Is Samacsys:N
可调阈值:NO模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-GDIP-T16信道数量:1
功能数量:1端子数量:16
最高工作温度:125 °C最低工作温度:-55 °C
封装主体材料:CERAMIC, GLASS-SEALED封装代码:DIP
封装等效代码:DIP16,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:5.08 mm
子类别:Power Management Circuits表面贴装:NO
技术:BICMOS温度等级:MILITARY
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

UCC1917 数据手册

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application  
INFO  
UCC1917  
UCC2917  
UCC3917  
available  
Positive Floating Hot Swap Power Manager  
FEATURES  
DESCRIPTION  
Manages Hot Swap of 15V and  
The UCC3917 family of positive floating hot swap managers provides complete  
power management, hot swap, and fault handling capability. The voltage limita-  
tion of the application is only restricted by the external component voltage limi-  
tations. The IC provides its own supply voltage via a charge pump off of VOUT.  
The onboard 10V shunt regulator protects the IC from excess voltage. The IC  
also has catastrophic fault indication to alert the user that the ability to shut off  
the output NMOS has been bypassed. All control and housekeeping functions  
are integrated and externally programmable. These include the fault current  
level, maximum output sourcing current, maximum fault time, soft start time,  
and average NMOS power limiting.  
Above  
Precision Fault Threshold  
Programmable Average Power  
Limiting  
Programmable Linear Current  
Control  
Programmable Overcurrent Limit  
Programmable Fault Time  
The fault level across the current sense amplifier is fixed at 50mV to minimize  
total drop out. Once 50mV is exceeded across the current sense resistor, the  
fault timer will start. The maximum allowable sourcing current is programmed  
with a voltage divider from the VREF/CATFLT pin to generate a fixed voltage  
on the MAXI pin. The current level at which the output appears as a current  
source is equal to VMAXI divided by the current sense resistor. If desired, a con-  
trolled current startup can be programmed with a capacitor on MAXI.  
Internal Charge Pump to Control  
External NMOS Device  
Fault Output and Catastrophic  
Fault Indication  
Fault Mode Programmable to  
Latch or Retry  
When the output current is below the fault level, the output device is switched  
on with full gate drive. When the output current exceeds the fault level, but is  
less than maximum allowable sourcing level programmed by MAXI, the output  
remains switched on, and the fault timer starts charging CT. Once CT charges  
to 2.5V, the output device is turned off and attempts either a retry sometime  
later or waits for the state on the LATCH pin to change if in latch mode. When  
the output current reaches the maximum sourcing current level, the output de-  
vice appears as a current source.  
Shutdown Control  
Undervoltage Lockout  
BLOCK DIAGRAM  
VDD  
13  
LATCH  
16  
V
1
3
PLIM  
DD  
UVLO  
>10V=ENABLE  
< 6V=DISABLE  
V
DD  
5V  
40µA  
VDD  
40µA  
DISABLE  
SHTDWN 12  
VOUT  
OUTPUT  
VOUT  
OUTPUT  
LOW  
VOUT  
FLTOUT 11  
5V  
C1P  
8
OVER  
CURRENT  
REFERENCE  
50mV  
COMPARATOR  
LOGIC  
SUPPLY  
2
4
SENSE  
VOUT  
ON-TIME  
DELAY  
C1N  
C2P  
C2N  
7
6
5
10 CT  
4V  
200mV  
9
15  
VREF/CATFLT  
14  
MAXI  
UDG-99055  
VSS  
SLUS203A - AUGUST 1999  

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