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参数资料
| 型号： | MAX5948AESA+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/18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) |
-48V Hot-Swap Controllers
with External R
SENSE
16 ______________________________________________________________________________________
V
EE
SENSE
GATE
DRAIN
V
DD
OV
5V
UV
PWRGD
MAX5948A
GND
(SHORT PIN)
-48V
R4
562k&
1%
R5
9.09k&
1%
R6
10k&
1%
R1
0.02&
5%
R3
18k&
5%
R2
10&
5%
C1
150nF
25V
Q1
IRF530
C2
3.3nF
100V
SENSE-
SENSE+
TRIM
ON/OFF
LUCENT
JW050A1-E
V
IN+
V
IN-
V
OUT+
V
OUT-
C4
100礔
100V
C5
100礔
16V
C3
0.1礔
100V
*
GND
*DIODES INC. SMAT70A.
Typical Operating Circuit
" Determine value of R3:
" Set R2 = 10&.
" If an optocoupler is utilized as in Figure 14, deter-
mine the LED series resistor:
Although the suggested optocoupler is not specified for
operation below 5mA, its performance is adequate for
36V temporary low-line voltage where LED current
would then be H2.2mA to 3.7mA. If R7 is set as high as
51k&, optocoupler operation should be verified over
the expected temperature and input voltage range to
ensure suitable operation when LED current H0.9mA for
48V input and H0.7mA for 36V input.
If input transients are expected to momentarily raise the
input voltage to >100V, select an input transient-volt-
age-suppression diode (TVS) to limit maximum voltage
on the MAX5948 to less than 100V. A suitable device is
the Diodes Inc. SMAT70A telecom-specific TVS.
Select Q1 to meet supply voltage, load current, efficien-
cy, and Q1 package power-dissipation requirements:
BV
DSS
e 100V
I
D(ON)
e 3x I
LOAD
DPAK, D
2
PAK, or TO-220AB
Choose the lowest practical R
DS(ON)
within budget
constraints. MOSFETs with values from 14m& to
540m& are available at 100V breakdown.
Ensure that the temperature rise of Q1 junction is not
excessive at normal load current for the package select-
ed. Ensure that I
CB
current during voltage transients
does not exceed allowable transient-safe operating-area
limitations. This is determined from the SOA and tran-
sient-thermal-resistance curves in the Q1 manufacturers
data sheet.
Example 1:
I
LOAD
= 2.5A, efficiency = 98%, then V
DS
= 0.96V is
acceptable, or R
DS(ON)
d 384m& at operating temper-
ature is acceptable. An IRL520NS 100V nMOS with
R
DS(ON)
d 180m& and I
D(ON)
= 10A is available in
D
2
PAK. (A Vishay Siliconix SUD40N10-25 100V nMOS
with R
DS(ON)
d 25m& and I
D(ON)
= 40A is available in
DPAK, but may be more costly because of a larger
die size).
R
V
V
mA I
mA
IN NOMINAL
LED
7
2
3
5
(
)
=
d
d
R
s
C
3
2
150
d
?/DIV>
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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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