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参数资料
| 型号： | MAX4273EEE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 23/26页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR HOT SWAP 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 2.7 V ~ 13.2 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
3V to 12V Current-Limiting Hot-Swap Controllers
with Autoretry, DualSpeed/BiLevel Fault Protection
Calculate the MOSFET thermal resistance required
for a short to ground.
Z θ JA = (150°C - 85°C) / (5V ? 10A) = 1.30°C/W
Using t START = 1ms as the pulse duration, use
Figure 17 to select a duty cycle. The duty cycle
should be about 0.01 or less. This implies t RETRY =
t START / 0.01 = 100ms. From Figure 8, C TIM = 10nF.
HIGH-CURRENT PATH
SENSE RESISTOR
MAX4271
Layout Considerations
To take full tracking advantage of the switch response
time to an output fault condition, it is important to keep
all traces as short as possible and to maximize the
high-current trace dimensions to reduce the effect of
undesirable parasitic inductance. Place the MAX4271/
MAX4272/MAX4273 close to the card’s connector. Use
a ground plane to minimize impedance and induc-
tance. Minimize the current-sense resistor trace length
(<10mm), and ensure accurate current sensing with
Kelvin connections (Figure 18).
When the output is short circuited, the voltage drop
across the external MOSFET becomes large. Hence,
the power dissipation across the switch increases, as
does the die temperature. An efficient way to achieve
good power dissipation on a surface-mount package is
to lay out two copper pads directly under the MOSFET
package on both sides of the board. Connect the two
pads to the ground plane through vias, and use
enlarged copper mounting pads on the top side of the
board.
MAX4272
MAX4273
Figure 18. Kelvin Connections for the Current-Sense Resistors
Pin Configurations
TOP VIEW
RTH 1
AUXVCC 2
16 OUTC
15 INC
IN 1
8
ON
IN 3
SENSE 4
MAX4273
14 REF
13 ON
SENSE 2
MAX4271
7
STAT
GATE 5
12 STAT
GATE
3
MAX4272
6
CTIM
CEXT 6
11 CTIM
GND 4
5
CSPD
LLMON 7
GND 8
10 CSPD
9
CTON
SO
QSOP/SO
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4273EEE+ | 功能描述:热插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX4273EEE+T | 功能描述:热插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX4273EEE-T | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX4273ESE | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX4273ESE+ | 功能描述:热插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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