參數(shù)資料
型號(hào)： MAX4945LELA+T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 外設(shè)及接口
英文描述： Overvoltage-Protection Controllers with Internal FET
中文描述： BUF OR INV BASED PRPHL DRVR, PDSO8
封裝： 2 X 2 MM, ROHS COMPLIANT, UDFN-8
文件頁(yè)數(shù)： 4/10頁(yè)
文件大?。?/td> 157K
代理商： MAX4945LELA+T
MAX4943–MAX4946/MAX4944L/MAX4945A/MAX4945L/MAX4949
Overvoltage-Protection Controllers with
Internal FET
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ACOK Output-Low Voltage
VOL
ISINK = 1mA
0.4
V
ACOK High-Leakage Current
VACOK = 5.5V
1
A
Thermal Shutdown
+175
°C
Thermal-Shutdown Hysteresis
40
°C
Load Capacitor
300
F
TIMING CHARACTERISTICS (Figure 2)
Debounce Time
tINDBC
Time from VUVLO < VIN < VOVLO to charge-
pump enable
15
ms
Switch Turn-On Time
tON
VUVLO < VIN < VOVLO, RLOAD = 100
Ω,
CLOAD = 300F, VOUT = from 10% of VOUT
to 80% of VOUT
6ms
ACOK Assertion Time
t ACOK
VUVLO < VIN < VOVLO, to ACOK low
30
ms
VIN < VUVLO or VIN > VOVLO, to internal
switch off
220s
Switch Turn-Off Time
tOFF
Overcurrent fault to internal switch turn-off
10
s
Autoretry Time
tRETRY
From overcurrent fault to internal switch
turn-on
15
ms
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +5V (MAX4943/MAX4944_/MAX4945_/MAX4949), VIN = +3V (MAX4946), TA = -40°C to +85°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
Note 1: All specifications are 100% production tested at TA = +25°C, unless otherwise noted. Specifications are over -40°C to +85°C
and are guaranteed by design.
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
0
90
60
30
120
150
180
210
240
270
300
210
614
18
22
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4943
toc01
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(nA)
26
MAX4944
0
60
40
20
80
100
120
140
RON
vs. TEMPERATURE
MAX4943
toc02
TEMPERATURE (
°C)
R
ON
(m
Ω
)
-40
10
-15
356085
0.990
0.996
0.994
0.992
0.998
1.000
1.002
1.004
1.006
1.008
1.010
-40
10
-15
35
60
85
NORMALIZED UVLO THRESHOLD
vs. TEMPERATURE
MAX4943
toc03
TEMPERATURE (
°C)
NORMALIZED
UVLO
THRESHOLD
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4946ELA+T 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Overvoltage-Protect Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
MAX4947EBA+ 制造商:Maxim Integrated Products 功能描述:
MAX4947EBA+T 功能描述:模擬開(kāi)關(guān) IC Hex SPDT Data Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4947ERA+T 制造商:Maxim Integrated Products 功能描述:HEX SPDT DATA SWITCH - Tape and Reel
MAX4947ETG 功能描述:模擬開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
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