參數(shù)資料
型號(hào)： MAX1837
廠商： Maxim Integrated Products, Inc.
英文描述： 24V Internal Switch, 100% Duty Cycle, Step-Down Converters
中文描述： 24V內(nèi)置開關(guān)、100%占空比、降壓型轉(zhuǎn)換器
文件頁(yè)數(shù)： 2/13頁(yè)
文件大?。?/td> 394K
代理商： MAX1837
M
24V Internal Switch, 100% Duty Cycle,
Step-Down Converters
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN,
SHDN
to GND...................................................-0.3V to +25V
LX to GND.......................................................-2V to (V
IN
+ 0.3V)
OUT, FB to GND.......................................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C) (Note 1)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Note 1:
Thermal properties are specified with product mounted on PC board with 1in
2
of copper area and still air.
PARAMETER
SYMBOL
V
IN
CONDITIONS
MIN
4.5
3.55
3.45
TYP
MAX
24
4.4
4.3
25
UNITS
V
Input Supply Range
V
IN
rising
V
IN
falling
4.0
3.9
12
18
3
Input Undervoltage Lockout
Threshold
V
UVLO
V
Input Supply Current
Input Supply Current in Dropout
Input Shutdown Current
I
IN
μA
μA
μA
I
IN D ROP)
V
IN
= 5V
SHDN
= GND
7
MAX183_EUT50
4.80
5.00
5.20
Output Voltage (Preset Mode)
V
OUT
FB = GND,
I
LOAD
= 0 to 125mA
(MAX1836) or
250mA (MAX1837)
MAX183_EUT33
3.168
3.30
3.432
V
Output Voltage Range
(Adjustable Mode)
V
OUT
(Note 2)
1.25
V
IN
V
Feedback Set Voltage
(Adjustable Mode)
V
FB
1.200
1.25
1.300
V
OUT Bias Current
FB Bias Current
FB Dual Mode
TM
Threshold
LX Switch Minimum Off-Time
LX Switch Maximum On-Time
LX Switch On-Resistance
V
OUT
= 5V
V
FB
= 0 or 1.25V, T
A
= +25
°
C
V
FB
rising or falling
2.5
7.4
+25
150
0.6
13
2
450
850
+75
μA
nA
mV
μs
μs
I
FB
-25
50
0.2
7
100
0.4
10
1.1
312
625
t
OFF( M N)
t
ON M AX
R
LX
V
FB
= 1.3V
V
IN
= 6V
MAX1836
MAX1837
250
500
-75
LX Current Limit
I
LIM
mA
LX Zero-Crossing Threshold
mV
ELECTRICAL CHARACTERISTICS
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
IN
= 12V,
SHDN
= IN,
T
A
= 0°C to +85°C
. Typical values are at T
A
= +25
°
C,
unless otherwise noted.)
Dual Mode is a trademark of Maxim Integrated Products, Inc.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1837ESA33 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1837ETT33+ 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP DOWN 6TDFN EP - Rail/Tube
MAX1837ETT33+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 24V 100% Duty Cycle RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1837ETT50+ 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP DOWN 6TDFN EP - Rail/Tube
MAX1837ETT50+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 24V 100% Duty Cycle RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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