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参数资料
| 型号： | ADM1170-2AUJZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR HOTSWAP 16.5V TSOT-23-8 |
| 产品培训模块： | Hot Swap Design |
| 标准包装： | 1 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 2.7 V ~ 16.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 薄型，TSOT-23-8 |
| 供应商设备封装： | TSOT-23-8 |
| 包装： | 标准包装 |
| 产品目录页面： | 792 (CN2011-ZH PDF) |
| 配用： | EVAL-ADM1170EBZ-ND - BOARD EVALUATION FOR ADM1170 |
| 其它名称： | ADM1170-2AUJZ-RL7DKR |
Data Sheet
threshold. The device can be reset by toggling the ON-CLR pin
the TIMER pin activates the 2 μA pull-down once the 1.3 V
threshold is reached, and continues to pull down until it reaches
the 0.2 V threshold. At this point, the 100 μA pull-down is
activated and the GATE pin is enabled. The device keeps
The duty cycle of this automatic retry cycle is set to the ratio of
2 μA/60 μA, which approximates 3.8% on. The value of the
timer capacitor determines the on time of this cycle. This time
ADM1170
The ADM1170-2 model has a latch off system whereby when a
current fault is detected, the GATE is switched off after a time
determined by the timer capacitor (see Figure 36 for details).
Toggling the ON-CLR pin, or pulling the TIMER pin to GND
for a brief period, resets this condition.
I RSENSE
5μA
is calculated as follows:
t ON = 1.3 × C TIMER /60 μA
t OFF = 1.1 × C TIMER /2 μA
I RSENSE
2μA
V TIMER
V GSFET
V OUT
60μA
SHORT-
CIRCUIT
EVENT
COMP2
V TIMER
V GSFET
V OUT
60μA
100μA
SHORT-
CIRCUIT
EVENT
Figure 36. ADM1170-2 Latch Off After Overcurrent Fault
SOFT START
The inrush current profile is controlled using an external
capacitor on the soft start (SS) pin. During power on reset, the
SS pin is held at GND. When the pass FET begins to conduct
COMP2
FAULT
COMP1
FAULT
current, a pull-up current source is initiated on the SS pin and
charges the voltage on the soft start capacitor in a linear fashion.
CYCLE CYCLE
Figure 35. ADM1170-1 Automatic Retry During Overcurrent Fault
AUTOMATIC RETRY OR LATCHED OFF
The ADM1170 is available in two models. The ADM1170-1
has an automatic retry system whereby when a current fault is
detected, the FET is shut down after a time determined by the
timer capacitor, and it is switched on again in a controlled con-
for details). The period of this cycle is determined by the timer
capacitor at a duty cycle of 3.8% on and 96.2% off.
The current limit of the device is porportional to the voltage on
the SS pin until it reaches 1 V. When the voltage on the SS pin
reaches 1 V the current limit reaches the normal operating
condition of V SENSE = 50 mV. The voltage on the SS pin
continues to rise past the 1 V level with no effect on the current
limit. The reference voltage for the GATE linear control
amplifier is derived from the soft start voltage, such that the
inrush linear current limit is defined as
I LIMIT = V SS /(20 × R SENSE )
This provides a limit of 50 mV across R SENSE when V SS is at 1 V.
Therefore, the value for the SS capacitor is chosen as follows:
C SS = I SS × t
where I SS = 10 μA and t is the time required for the current limit
to ramp up.
Rev. A | Page 13 of 16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1171 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.7 V to 16.5 V Hot Swap Controller with Current Sense Output |
| ADM1171-1AUJ | 制造商:Analog Devices 功能描述:ADI HOT SWAP CONTROLLER - Bulk |
| ADM1171-1AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP 16.5V TSOT-23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| ADM1171-2AUJ | 制造商:Analog Devices 功能描述:ADI HOT SWAP CONTROLLER - Bulk |
| ADM1171-2AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP 16.5V TSOT-23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
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