- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄380340 > MAX1878EGC (MAXIM INTEGRATED PRODUCTS INC) Analog IC PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1878EGC |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Analog IC |
| 中文描述： | 0.8 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, CQCC12 |
| 封裝： | 4 X 4 MM, 0.90 MM HEIGHT, QFN-12 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 313K |
| 代理商： | MAX1878EGC |
Also, note that the voltages at MAIN, OUT3, and OUT4
will drop slightly below the battery voltage when OFF,
due to the DC current path through the inductor and
output rectifier. For the step-up outputs, a switch may
be added between the output voltage and the load to
disconnect them while the output is disabled.
High Input Voltage Operation
The MAIN output is designed to operate with an input
voltage above or below the output regulation voltage.
Since MAIN is a step-up converter, when the input volt-
age is above the regulation voltage, the output will be
nearly that of the input voltage. If the input battery volt-
age ranges above and below the regulation voltage,
follow the MAIN output with the LDO output to form a
step-up/step-down regulator. In this case, when the
battery voltage is low, the step-up converter raises the
battery voltage to the regulation voltage. When the bat-
tery voltage is above the regulation voltage, the LDO
regulator controls the output voltage.
For high input voltages, if the power is applied abruptly,
the MAIN output capacitor charges quickly, causing
the L2 inductor current to rise above the 2A current
limit. To prevent damage to the MAX1800, diode D10 is
used to charge main output capacitor C17, preventing
excessive current in the inductor. Components R46,
C24, and D9 delay turn-on of the MAIN converter when
power is applied. This prevents damage to the switch-
es caused by switching with excessive inductor current
at turn-on. If the MAX1800 is used exclusively with low
input voltage, components R46, C24, D9, and D10 may
be omitted.
E
MAX1800 Evaluation Kit
_______________________________________________________________________________________
5
SUPPLIER
AVX
PHONE
803-946-0690
FAX
803-626-3123
Central
Semiconductor
631-435-1110
631-435-1824
Fairchild
Semiconductor
408-721-2181
408-721-1635
Motorola
Sumida
Taiyo Yuden
TDK
602-303-5454
847-956-0666
408-573-4150
847-803-6100
602-994-6430
847-956-0702
408-573-4159
847-803-6296
Component Suppliers
Note:
Please indicate that you are using the MAX1800/
MAX1801 when contacting these suppliers.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1886 | Ultra-High-Speed.Low-Distortion.Differential-to-Single-Ended Line Receivers with Enable[MAX4444/MAX4445/MAX4444ESE/MAX4444ESE-T/MAX4444EVKIT/MAX4445ESE/MAX4445ESE-T ] |
| MAX1886EZK | Operational Amplifier |
| MAX188AEPP | Single-Ended Data Acquisition System |
| MAX188AEWP | Single-Ended Data Acquisition System |
| MAX188AMJP | Single-Ended Data Acquisition System |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1878EGC-T | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
| MAX1878EPD | 制造商:Maxim Integrated Products 功能描述: |
| MAX1878ETC+ | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Dual-Output Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
| MAX1878ETC+T | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Dual-Output Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
| MAX1878EVKIT | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Evaluation Kit for the MAX1878 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。