參數(shù)資料
型號: MAX6397MATA-T
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 電源管理
英文描述: Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO8
封裝: 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN-8
文件頁數(shù): 7/18頁
文件大?。?/td> 299K
代理商: MAX6397MATA-T
An additional capacitor can be added to GATE and
GND to shift the curves as this increases
t1. These val-
ues are used for illustration only. Customers must verify
worst-case conditons for their specific application.
OUTPUT Current Calculation
The MAX6397 high input voltage (+72V max) provides up
to 100mA of output current at REG. Package power dissi-
pation limits the amount of output current available for a
given input/output voltage and ambient temperature.
Figure 13 depicts the maximum power dissipation curve
for the MAX6397. The graph assumes that the exposed
metal pad of the MAX6397 package is soldered to 1in2 of
PC board copper. Use Figure 11 to determine the allow-
able package dissipation for a given ambient tempera-
ture. Alternately, use the following formula to calculate the
allowable package dissipation:
PDISS = 1.455W for TA ≤ +70°C
Maximum power dissipation =
1.455 - 0.0182 (TA - 70°C) for +70°C ≤ TA ≤ +125°C
where, 0.0182 W/°C is the MAX6397 package thermal
derating.
After determining the allowable package dissipation,
calculate the maximum output current using the follow-
ing formula:
I
P
VV
mA
OUT MAX
DISS
IN
REG
()
=≤
100
MAX6397/MAX6398
Overvoltage Protection Switch/Limiter
Controllers Operate Up to 72V
______________________________________________________________________________________
15
TEMPERATURE (
°C)
P
D
(W)
140
120
80
100
40
60
20
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
160
DERATE 18.2mW/
°C
ABOVE +70
°C
1.455W
Figure 13. Maximum Power Dissipation vs. Temperature
MAX6397
GATE
POK
REG
IN
SHDN
GND
SET
OUT
ALWAYS-ON
C
VCC
RESET
GPIO
12V IN
DC-DC
CONVERTER
OUT
IN
GND
C
Typical Application Circuit
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相關代理商/技術參數(shù)
參數(shù)描述
MAX6397SATA 制造商:Maxim Integrated Products 功能描述:OVERVOLTAGE PROTECTION SWITCH/LIMIT - Rail/Tube
MAX6397SATA+ 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR CNTRLR 1.215V 8TDFN EP - Rail/Tube
MAX6397SATA+T 功能描述:監(jiān)控電路 Over Volt Protection Switch/Limiter RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲(典型值):10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX6397SATA-T 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲(典型值):10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX6397TATA 制造商:Maxim Integrated Products 功能描述:OVERVOLTAGE PROTECTION SWITCH/LIMIT - Rail/Tube