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參數資料
| 型號： | MAX5948BESA+T |
| 廠商： | Maxim Integrated |
| 文件頁數： | 12/18頁 |
| 文件大小： | 182K |
| 描述： | IC CNTRLR HOT SWAP 8-SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 熱交換控制器 |
| 應用： | 通用 |
| 內部開關： | 無 |
| 電源電壓： | -20 V ~ -80 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
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>
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?/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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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5949AESA | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5949AESA+ | 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5949AESA+T | 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5949AESA+TG126 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX5949AESA-T | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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