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參數資料
| 型號： | MIC2595 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Replaced by PTH05060W : |
| 中文描述： | 單通道負高壓熱插拔電源控制器/音序器 |
| 文件頁數： | 14/17頁 |
| 文件大?。?/td> | 100K |
| 代理商： | MIC2595 |
MIC2589/2595
Micrel
M9999-031504
14
March 2004
R2 =R3
V
V
–
1
R2
12.4k
72V
37V
–
1
11.73k
OV
UV
×
=
×
=
The closest standard 1% values for R2 = 11.8k
. Lastly, the
value for R1 is calculated:
R1=R3
V
–
1.223V
1.223V
–
R2
R1=12.4k
72V
–
1.223V
1.223V
–
R2
R1= 705.81k
OV
×
(
)
×
(
)
The closest standard 1% value for R1 = 698k
.
Using standard 1% resistor values, the circuit
’
s nominal
UV and OV thresholds are:
V
UV
= 36.5V
V
OV
= 71.2V
Programmable UVLO Hysteresis (MIC2595 and
MIC2595R)
The MIC2595 and the MIC2595R devices have user-pro-
grammable hysteresis by means of the ON and OFF pins
(Pins 4 and 3, respectively). This allows setting the
MIC2595/95R to turn on at a voltage V1, and not turn off until
a second voltage V2, where V2 < V1. This can significantly
simplify dealing with source impedances in the supply buss
while at the same time increasing the amount of available
operating time from a loosely regulated power rail (for ex-
ample, a battery supply). The MIC2595/95R holds the output
off until the voltage at the ON pin is above its V
ONH
threshold
value given in the
“
Electrical Characteristics
”
table. Once the
output has been enabled by the ON pin, it will remain on until
the voltage at the OFF pin falls below its respective V
OFFL
threshold value, or the part turns off due to an external fault
condition. Should either event occur, the GATE pin is imme-
diately pulled low and will remain low until the ON pin voltage
once again above its V
ONH
threshold. The circuit
’
s turn-on
and turn-off voltage levels are set using the resistor divider
R1, R2, and R3 as shown in the
“
Typical Application
”
where
the equations to set the trip points are shown below. For the
following example, the circuit
’
s ON threshold is set to V
ON
=
40V and the circuit
’
s OFF threshold is set to
V
OFF
= 35V.
V
V
(typ)
R1 R2 R3
R3
V
V
(typ)
R1 R2 R3
R2+R3
ON
ONH
OFF
OFFL
=
×
(
)
=
×
(
)
Given V
OFF
, V
ON
, and any one resistor value, the remaining
two resistor values can be readily determined. A suggested
value for R3 is that which will provide approximately 100
μ
A of
current through the voltage divider chain at V
DD
= V
OFF
. This
yields the following as a starting point:
R3
V
(typ)
100 A
1.223V
100 A
12.23k
OFFL
=
=
=
The closest standard 1% value for R3 = 12.4k
. Solving for
R2 and R1 yields:
R2 =R3
V
V
–
1
R2 =12.4k
40V
35V
–
1
1.77k
ON
OFF
×
×
=
The closest standard 1% value for R2 = 1.78 k
. Lastly, the
value for R1 is calculated:
R1=R3
V
–
1.223V
1.223V
–
R2
R1=12.4k
40V
–
1.223V
1.223V
–
R2
ON
×
(
)
×
(
)
R1 = 391.38k
The closest standard 1% value for R1 = 392k
.
Using standard 1% resistor values, the circuit
’
s nominal
ON and OFF thresholds are:
V
ON
= 40.1V
V
OFF
= 35V
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|---|---|
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| MIC2589R-1BM | SINGLE-CHANNEL NEGATIVE HIGH VOLTAGE HOT SWAP POWER CONTROLLERS/SEQUENCERS |
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相關代理商/技術參數 |
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|---|---|
| MIC2595-1BM | 功能描述:IC CTRLR HOT SWAP NEG HV 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內部開關:是 電流限制:可調 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2595-1BM TR | 功能描述:IC CTRLR HOT SWAP NEG HV 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內部開關:是 電流限制:可調 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2595-1YM | 功能描述:熱插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free 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 |
| MIC2595-1YM TR | 功能描述:熱插拔功率分布 Negative Voltage Hot-Swap Controller - Lead Free 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 |
| MIC2595-1YM-TR | 功能描述:Hot Swap Controller, Sequencer 1 Channel -48V 14-SOIC 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產 類型:熱交換控制器，序列發(fā)生器 通道數:1 內部開關:無 應用:-48V 特性:閉鎖故障 可編程特性:限流，故障超時，UVLO 電壓 - 電源:-80 V ~ -19 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 85°C 電流 - 電源:4mA 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商器件封裝:14-SOIC 功能引腳:CFILTER，CNLD，DRAIN，PGTIMER，OFF，ON，PWRGD1，PWRGD2，PWRGD3 標準包裝:1 |
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