參數(shù)資料
型號(hào): MAX5938LEEE+
廠商: Maxim Integrated
文件頁(yè)數(shù): 14/26頁(yè)
文件大小: 915K
描述: IC HOT-SWAP CTRLR -48V 16-QSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 100
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: -10 V ~ -80 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-QSOP
包裝: 管件
Applications Information
Setting ON, OFF, and OV Voltage Levels
The trip levels for ON, OFF, and OV can readily be set
with a 4-element resistor-divider. Total resistance is a
trade off of quiescent current, threshold tolerance due
to pin input bias current (25nA), and the ability to follow
very fast supply transients. Both ON and OV have hys-
teresis on the reference threshold voltage: the rising
reference threshold is 1.25V and the falling threshold is
1.125V. The reference threshold voltage for OFF is
1.25V. In determining a set of resistors, use V
REF
=
1.25V for ON, OFF, and OV and an R
TOT
= 100k& in
this example. See Figure 12 for nomenclature. For this
example, use V
OV
= 80V, V
ON
= 42V, and V
OFF
= 38V
as the desired voltage trip levels.
1) R
4
= R
TOT
x V
REF
/ V
OV
2) R
3
= R
TOT
x V
REF
/ V
ON
- R
4
3) R
2
= R
TOT
x V
REF
/ V
OFF
- R
3
- R
4
4) R
1
= R
TOT
- R
2
- R
3
- R
4
The exact result to three decimal places is R1 =
96.711k&, R2 = 313&, R3 = 1.414k&, and R4 =
1.563k&. When converted to the nearest 1% standard
resistor, the values become R1 = 97.6k&, R2 = 316&,
R3 = 1.40k&, and R4 = 1.58k&.
-48V Hot-Swap Controller with V
IN
Step Immunity,
No R
SENSE
, and Overvoltage Protection
14   ______________________________________________________________________________________
Figure 12. Programming the MAX5938s ON, OFF, and OV
Thresholds
MAX5938
GND
OFF
ON
V
IN
 = (GND - V
EE
)
R4
R3
R2
R1
OV
V
EE
Figure 13. MAX5938 Circuit-Breaker Threshold Adjustment
MAX5938
C
LOAD
LOAD
SC TRIP
R
ON
V
OUT
I
LOAD
CB TRIP
t
CB_DLY
R
INT
2k&
?.5%
R
CB_ADJ
R
R
V
SC
V
EE
GND
50礎(chǔ)
CB_ADJ
I
CB_ADJ
相關(guān)PDF資料
PDF描述
MAX5939EESA+ IC HOT-SWAP CTRLR -48V 8-SOIC
MAX5946LETX+T IC CNTRLR PCI EXP DL 36TQFN
MAX5948BESA+T IC CNTRLR HOT SWAP 8-SOIC
MAX5949BESA+T IC CNTRLR HOT SWAP 8-SOIC
MAX5950ETJ+ IC PWM CTRL HOT-SW 12V 32TQFN-EP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5938LEEE+ 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5938LEEE+T 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5938LEEE-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5939AESA 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5939AESA+ 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube