- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384708 > MAX867EUA (MAXIM INTEGRATED PRODUCTS INC) 3.3V/5V or Adjustable-Output, Single-Cell DC-DC Converters PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX867EUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.3V/5V or Adjustable-Output, Single-Cell DC-DC Converters |
| 中文描述： | SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 1.11 MM HEIGHT, ULTRA SMALL, UMAX-8 |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 139K |
| 代理商： | MAX867EUA |
M
3.3V /5V or Adjustable-Output,
S ingle-Cell DC-DC Converters
8
_______________________________________________________________________________________
V oltage Referenc e
The precision voltage reference is suitable for driving
external loads, such as an analog-to-digital converter.
The voltage-reference output changes less than ±2%
when sourcing up to 250μA and sinking up to 20μA. If
the reference drives an external load, bypass it with
0.22μF to GND. If the reference is unloaded, bypass it
with at least 0.1μF.
Logic Inputs and Outputs
The 3/5 input is internally diode clamped to GND and
OUT, and should not be connected to signals outside
this range. The SHDN input and LBO output (open-
drain) are not clamped to V+ and can be pulled as high
as 7V regardless of the voltage at OUT
.
Do not leave
control inputs (3/5, LBI, or SHDN) floating.
__________________Design Proc edure
Output V oltage S elec tion
For the MAX866, you can select a 3.3V or 5V output volt-
age under logic control, or by tying 3/5 to GND or OUT.
The MAX867’s output voltage is set by two resistors, R1
and R2 (Figure 2b), which form a voltage divider
between the output and FB. Use the following equation
to determine the output voltage:
V
OUT
= V
REF
(
R1 + R2
)
R2
where V
REF
= 1.25V.
To simplify resistor selection:
OUT
V
REF
R1 = R2
(
V
)
C1
47
μ
F
L1
330
μ
F
V
IN
D1
C2
47
μ
F
R1
R2
LX
OUT
FB
LBO
LBI
REF
SHDN
GND
C3
0.1
μ
F
V
OUT
5
1
3
8
6
2
4
7
MAX867
L1 = COILCRAFT DO1608-334
D1 = MOTOROLA MBR0520LTI
C1
47
μ
F
L1
330
μ
H
V
IN
D1
C2
47
μ
F
R1
LX
OUT
3/5
LBO
LBI
REF
SHDN
GND
C3
0.1
μ
F
V
OUT
5
1
3
8
6
2
4
7
MAX866
L1 = COILCRAFT DO1608-334
D1 = MOTOROLA MBR0520LTI
OUTPUT
SELECT
Figure 2b. Standard Application Circuit—Adjustable Output
Voltage
Figure 2a. Standard Application Circuit—Preset Output
Voltage
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX868 | Regulated, Adjustable -2x Inverting Charge Pump |
| MAX868EUB | Regulated, Adjustable -2x Inverting Charge Pump |
| MAX869LEEE | 2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown |
| MAX869 | 2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown |
| MAX869L | 2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX867EUA+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3/5/AdjV 1-Cell 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 |
| MAX867EUA+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3.3/5/AdjV 1-Cell 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 |
| MAX867EUA-G063 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX867EUA-T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 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 |
| MAX867EUA-TG063 | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。