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參數(shù)資料
| 型號： | MAX757 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters(可調(diào),高效率,步升DC-DC變換器) |
| 中文描述： | 3.3V/5V/可調(diào)輸出、升壓型DC-DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 129K |
| 代理商： | MAX757 |
M
3.3V /5V /Adjustable-Output,
S tep-Up DC-DC Converters
2
_______________________________________________________________________________________
Supply Voltage (OUT to GND) ....................................-0.3V, +7V
Switch Voltage (LX to GND) ........................................-0.3V, +7V
Auxiliary Pin Voltages (SHDN, LBI, LBO, REF,
3/5, FB to GND)........................................-0.3V, (V
OUT
+ 0.3V)
Reference Current (I
) ....................................................2.5mA
Continuous Power Dissipation (T
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C)..........................471mW
Operating Temperature Ranges:
MAX75_C_ _ ........................................................0°C to +70°C
MAX75_E_ _......................................................-40°C to +85°C
J unction Temperature......................................................+150°C
Storage Temperature Range............................... -65°to +160°C
Lead Temperature (soldering, 10sec) ........................... +300°C
ELECTRICAL CHARACTERISTICS
(Circuits of Figure 1 and Typical Operating Circuit, V
IN
= 2.5V, I
LOAD
= 0mA, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
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.
ABSOLUTE MAXIMUM RATINGS
Note 1:
Supply current from the 3.3V output is measured with an ammeter between the 3.3V output and OUT pin. This current
correlates directly with actual battery supply current, but is reduced in value according to the step-up ratio and efficiency.
Note 2:
Minimum value is production tested. Maximum value is guaranteed by design and is not production tested.
LBO Output Leakage Current
SHDN, 3/5 Input Voltage Low
SHDN, 3/5, FB, LBI Input Current
V
2.7
5.5
MAX757, I
LOAD
= 0mA (Note 2)
Output Voltage Range
V
1.22
1.25
1.28
MAX757
FB Voltage
nA
±100
LBI = 1.25V, FB = 1.25V, SHDN = 0V or 3V,
3/5 = 0V or 3V
V
1.6
SHDN, 3/5 Input Voltage High
V
0.4
Shutdown Quiescent Current
(Note 1)
Reference Voltage
Battery Quiescent Current
Measured at V
IN
in Figure 1
V
1.22
1.25
25
1.28
With falling edge
LBI Input Threshold
LBI Input Hysteresis
LBO Output Voltage Low
mV
V
μA
0.4
1
I
SINK
= 2mA
LBO = 5V
μA
20
40
SHDN = 0V, LBI = 1.25V, 3/5 = 3V, V
OUT
= 3.47V,
FB = 1.3V (MAX757 only)
No REF load, C
REF
= 0.1μF
μA
Quiescent Supply Current in
3.3V Mode (Note 1)
MAX757, V
OUT
= 5V, 0mA < I
LOAD
< 200mA
MAX756, 3/5 = 0V, 0mA < I
LOAD
< 200mA
MAX756, 3/5 = 3V, 0mA < I
LOAD
< 300mA
%
0.8
2.0
3/5 = 3V, -20μA < REF load < 250μA, C
REF
= 0.22μF
Reference-Voltage Regulation
V
1.23
1.25
1.27
60
I
LOAD
= 0mA, 3/5 = 3V, LBI = 1.25V, V
OUT
= 3.47V,
FB = 1.3V (MAX757 only)
μA
V
60
Output set for 3.3V
1.1
1.8
I
LOAD
= 10mA
Minimum Start-Up Supply Voltage
4.8
5.0
5.2
2V < V
IN
< 3V
3.17
3.30
3.43
V
4.8
5.0
5.2
Output Voltage
UNITS
MIN
TYP
MAX
CONDITIONS
PARAMETER
V
0.7
I
LOAD
= 20mA
Minimum Operating Supply
Voltage (once started)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX757C/D | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Adjustable Step-Up DC-DC Converter 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 |
| MAX757C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX757CPA | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3/5/AdjV-Out Step Up DC/DC Converter 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 |
| MAX757CPA+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3/5/AdjV-Out Step Up DC/DC Converter 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 |
| MAX757CSA | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3/5/AdjV-Out Step Up DC/DC Converter 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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