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參數(shù)資料
| 型號(hào)： | MAX858 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Step-Up DC-DC Converters(可調(diào)節(jié)輸出,高效率,低IQ值,步升DC-DC變換器) |
| 中文描述： | 3.3V/5V或可調(diào)輸出、升壓型DC-DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 152K |
| 代理商： | MAX858 |
M
3.3V /5V or Adjustable-Output,
S tep-Up DC-DC Converters
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (OUT to GND) ...................................-0.3V, +7V
Switch Voltage (LX to GND) .......................................-0.3V, +7V
LBI, REF, 3/––, FB to GND .........................-0.3V, (V
OUT
+ 0.3V)
Reference Current (I
REF
) ..................................................2.5mA
Continuous Power Dissipation (T
A
= +70°C)
SO (derate 5.88mW/°C above +70°C) .........................471mW
μMAX (derate 4.1mW/°C above +70°C) ......................330mW
CERDIP (derate 8.00mW/°C above +70°C) .................640mW
ELECTRICAL CHARACTERISTICS
(Circuits of Figure 2, V
IN
= 2.5V, I
LOAD
= 0mA, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
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.
Reverse Battery Current (T
≤
+45°C, Note 1) .................750mA
Operating Temperature Ranges
MAX85_C_ _ ......................................................0°C to +70°C
MAX85_E_ _ ....................................................-40°C to +85°C
MAX85_MJ A .................................................-55°C to +125°C
J unction Temperature .....................................................+150°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300°C
Note 1:
Reverse battery current is measured from the Typical Operating Circuits battery input terminal to GND when the battery is
connected backwards. A reverse current of 750mA will not exceed the SO or CERDIP package dissipation limits but, if left
for an extended time (more than ten minutes), may degrade performance.
LBO = 5V
I
SINK
= 2mA
With falling edge
3/––= 3V, -20μA
≤
REF load
≤
250μA, C
REF
= 0.22μF
No REF load
MAX858/MAX859
I
LOAD
= 0mA, 3/––= 3V, LBI = 1.5V, V
OUT
= 3.47V,
(FB = 1.5V, MAX857/MAX859 only)
MAX856/MAX857
S———N= 0V, 3/––= 3V, LBI = 1.5V, V
OUT
= 3.47V,
(FB = 1.5V, MAX857/MAX859 only)
2V
≤
V
IN
≤
3V
I
LOAD
= 0mA
Output set for 3.3V, measured at V
IN
in Figure 2, R3 omitted.
CONDITIONS
μA
1
LBO Output Leakage Current
V
0.4
LBO Output Voltage Low
mV
25
LBI Input Hysteresis
V
1.22
1.25
1.28
LBI Input Threshold
%
0.8
2.0
Reference-Voltage Regulation
V
1.23
1.25
1.27
Reference Voltage
mA
125
500
μA
1
5
Shutdown Quiescent Current
(Note 2)
1
μA
60
No Load Battery Current
4.80
5.0
5.20
3.17
3.3
3.43
4.80
5.0
5.20
μA
25
60
Quiescent Supply Current in
3.3V Mode (Note 2)
V
0.8
Minimum Operating Voltage
4.80
5.0
5.20
3.17
3.3
3.43
V
4.80
5.0
5.20
Output Voltage
V
0.8
1.8
Minimum Start-Up
Supply Voltage
UNITS
MIN
TYP
MAX
PARAMETER
Peak Inductor Current Limit
MAX856, 3/––= 0V, 0mA
≤
I
LOAD
≤
100mA
MAX856, 3/––= 3V, 0mA
≤
I
LOAD
≤
150mA
MAX857, V
OUT
= 5V, 0mA
≤
I
LOAD
≤
100mA
MAX858, 3/––= 0V, 0mA
≤
I
LOAD
≤
25mA
MAX858, 3/––= 3V, 0mA
≤
I
LOAD
≤
35mA
MAX859, V
OUT
= 5V, 0mA
≤
I
LOAD
≤
25mA
MAX85_C
MAX85_E/M
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8581ETB+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 2.5/1.5MHz Step-Down 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 |
| MAX8582ETB+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX8582ETB+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 2.5/1.5MHz Step-Down 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 |
| MAX8582EVKIT+ | 制造商:Maxim Integrated Products 功能描述:MAX8582 EVAL KIT - Rail/Tube |
| MAX8585EUA | 功能描述:功率驅(qū)動(dòng)器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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