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参数资料
| 型号： | MAX5948AESA+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/18页 |
| 文件大小： | 182K |
| 描述： | IC HOT SWAP CONTROL 8-SOIC |
| 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： | -20 V ~ -80 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1423 (CN2011-ZH PDF) |
Figure 11a shows how to program the undervoltage
and overvoltage trip thresholds using three resistors.
With R4 = 562k&, R5 = 9.09k&, and R6 = 10k&, the
undervoltage threshold is set to 37.2V (with a 37.8V
release from undervoltage) and the overvoltage is set
to 71.1V (with a 69.9V release from overvoltage).
More hysteresis can be added to the undervoltage
lockout with the circuit shown in Figure 11b. Resistor
R3 connected between GATE and UV lowers the sup-
ply undervoltage lockout threshold (supply voltage
decreasing) to:
where V
UVL
is typically 1.223V. The supply voltage to
release from undervoltage lockout (supply voltage
increasing) is:
where V
UVH
is typically 1.243V. The supply undervolt-
age lockout hysteresis is the difference, or:
where V
UVHY
is typically 20mV.
V
V
R R R R R R
R R
V
R
R
UVHYS UVHY
GATE
,
=
?nbsp + ?nbsp + ?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
2 3 1 3 1 2
2 3
1
3
V
V
R R R R R R
R R
UVLH
UVH
,
=
?nbsp + ?nbsp + ?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
2 3 1 3 1 2
2 3
V
V
R R R R R R
R R
V
R
R
UVHL
UVL
GATE
,
=
?nbsp + ?nbsp + ?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
2 3 1 3 1 2
2 3
1
3
-48V Hot-Swap Controllers
with External R
SENSE
12 ______________________________________________________________________________________
V
EE
V
DD
OV
UV
MAX5948A
MAX5948B
-48V RTN
-48V
V
UV
= 1.223
R4 + R5 + R6
R5 + R6
R4
R5
R6
-48V RTN
(SHORT PIN)
V
OV
= 1.223
R4 + R5 + R6
R6
Figure 11a. Undervoltage and Overvoltage Sensing
V
EE
SENSE
GATE
V
DD
UV
OV
MAX5948
-48V RTN
= 37.6V
UV
-48V RTN
(SHORT PIN)
*
-48V
*DIODES INC. SMAT70A.
R1
562k&
1%
R4
506k&
1%
R2
16.9k&
1%
R5
8.87k&
1%
R7
0.02&
5%
R6
10&
5%
C1
150nF
25V
Q1
IRF530
R3
1.62M&
1%
= 43V
UV
= 71V
OV
Figure 11b. Programmable Hysteresis For Undervoltage
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5948AESA+ | 功能描述:热插拔功率分布 48V- 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 |
| MAX5948AESA+T | 功能描述:热插拔功率分布 48V- 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 |
| MAX5948AESA-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 |
| MAX5948BESA | 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 |
| MAX5948BESA+ | 功能描述:热插拔功率分布 48V- 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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