- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385552 > MAX848ESE (MAXIM INTEGRATED PRODUCTS INC) 1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX848ESE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters |
| 中文描述： | 1.1 A SWITCHING REGULATOR, 340 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.150 INCH, MS-012AC, SOIC-16 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 166K |
| 代理商： | MAX848ESE |
M
1-Cell to 3-Cell, High-Power,
Low-Noise, S tep-Up DC-DC Converters
8
_______________________________________________________________________________________
Pin Desc ription
ADC’s Input Channel Selector. Pull low to select AIN1 and drive high to select AIN2.
AINSEL
9
ADC’s Serial Output. Pulsed output, RZ format. Full scale is f
OSC
/2 (f
CLK
/2in external sync mode). The
DATA output is low when V
CLK/SEL
= 0V (PFM mode).
DATA
10
External Clock Input/Regulator’s Switching Mode Selector.
CLK/SEL = low: low-power, low-quiescent PFM mode. Delivers 100mW of output power.
CLK/SEL = high: low-noise, high-power PWM mode, switching at a constant frequency (300kHz).
CLK/SEL = driven with external clock: low-noise, high-power, synchronized PWM mode. The internal
oscillator is synchronized to the external clock (200kHz ~ 400kHz). Turning the DC-DC converter on with
V
CLK/SEL
= 0V also serves as a soft-start function, since the peak inductor current is limited to 30% of the
nominal value.
CLK/SEL
11
Source of the Internal N-Channel Power MOSFET. Connect to high-current ground path.
PGND
12
Drain of the Internal N-Channel Power MOSFET and P-Channel Synchronous Rectifier
LX
13
Output Sense Input. The IC is powered from OUT. Bypass to GND with a 0.1μF ceramic capacitor. Connect
OUT to POUT through a 10
series resistor.
OUT
5
Power-Good Comparator Input. Connect to GND for fixed threshold (V
OUT
x 0.9). To adjust the threshold,
connect to a resistor divider from OUT to GND.
POKIN
6
Dual Mode DC-DC Converter Feedback Input. Connect to GND for fixed 3.3V output voltage. Connect to
a resistor divider from OUT to GND to adjust the output voltage. Minimize noise coupling from switching
signals to FB.
FB
7
Power-Good Output. This open-drain output is pulled low when the output voltage (V
OUT
) drops below
the internally set threshold (fixed threshold), or when the voltage at POKIN drops below V
REF
(adjustable
threshold).
POK
8
Ground. Use for low-current ground paths. Connect to PGND with a short trace.
GND
4
Reference Output. Bypass with a 0.22μF capacitor to GND.
REF
3
PIN
ADC’s Channel 2 Input. Analog input voltage range is 0V to 2.5V.
AIN2
2
ADC’s Channel 1 Input. Analog input voltage range is 0.625V to 1.875V.
AIN1
1
FUNCTION
NAME
14
POUT
Source of the Internal P-Channel Synchronous Rectifier MOSFET. Connect an external Schottky diode from
LX to POUT. Bypass to PGND with a 0.1μF ceramic capacitor as close to the IC as possible.
15
ON2
OFF Control Input. When ON1 = 0 and
ON2
= 1, the IC is off.
16
ON1
ON Control Input. When ON1 = 1 or
ON2
= 0, the IC is on.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX848 | Low-Noise, Step-Up DC-DC Converters(高功率，低噪，帶0.5AMOSFET功率開關(guān),步升DC-DC變換器) |
| MAX849 | Low-Noise, Step-Up DC-DC Converters(高功率，低噪，帶0.5AMOSFET功率開關(guān),步升DC-DC變換器) |
| MAX8530 | Dual Low-Dropout Linear Regulators with RESETor Low-Noise Output in UCSP or QFN |
| MAX8530EBT | Dual Low-Dropout Linear Regulators with RESETor Low-Noise Output in UCSP or QFN |
| MAX8530ETT | Dual Low-Dropout Linear Regulators with RESETor Low-Noise Output in UCSP or QFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX848ESE+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-3 Cell 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 |
| MAX848ESE+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-3 Cell 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 |
| MAX848ESE-T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-3 Cell 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 |
| MAX849ESE | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-3 Cell 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 |
| MAX849ESE+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-3 Cell 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。