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參數(shù)資料
| 型號： | MAX1896 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 1.4MHz SOT23 Current-Mode Step-Up DC-DC Converter |
| 中文描述： | 1.4MHz、SOT23封裝、電流模式升壓型DC-DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 755K |
| 代理商： | MAX1896 |
M
1.4MHz SOT23 Current-Mode
Step-Up DC-DC Converter
_______________________________________________________________________________________
5
Pin Description
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
SHDN
5V/div
OUTPUT
VOLTAGE
5V/div
I
OUT
= 100mA
INDUCTOR
CURRENT
500mA/div
2ms/div
V
IN
= 3.3V, C
= 33nF,
C
OUT
= 3.3μF TANTALUM + 0.1μF CERAMIC
CIRCUIT OF FIGURE 3
STARTUP WAVEFORM
WITH SOFT-START
M
LX VOLTAGE
5V/div
OUTPUT
VOLTAGE
AC-COUPLED
200mV/div
INDUCTOR
CURRENT
500mA/div
400ns/div
V
IN
= 5V,
C
OUT
= 0.1μF CERAMIC + 2.2μF CERAMIC
SWITCHING WAVEFORM
M
I
OUT
= 150mA
600
500
V
OUT
= 5V
V
OUT
= 12V
300
400
100
200
0
2.5
4.0
3.0
3.5
INPUT VOLTAGE (V)
4.5
5.0
5.5
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
M
M
MAXIMUM OUTPUT
CURRENT DEFINED AT
90% OF NO LOAD
OUTPUT VOLTAGE
PIN
NAME
FUNCTION
1
LX
Power Switching Connection. Connect LX to the inductor and output rectifier. Connect components
as close to LX as possible.
2
GND
Ground
3
FB
Feedback Input. Connect a resistive voltage-divider from the output to FB to set the output voltage.
See the
Setting the Output Voltage
section.
4
SHDN
Shutdown Input. Drive
SHDN
low to turn off the converter. To automatically start the converter,
connect
SHDN
to IN. Drive
SHDN
with a slew rate of 0.1V/μs or greater. Do not leave
SHDN
unconnected.
SHDN
draws up to 50μA.
5
SS
Soft-Start Input. Connect a soft-start capacitor from SS to GND to soft-start the converter. Leave SS
open to disable the soft-start function. See the
Soft-Start
section.
6
IN
Internal Bias Voltage Input. Connect IN to the input voltage source. Bypass IN to GND with a
1μF or greater capacitor as close to IN as possible.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1896EUT | 制造商:Maxim Integrated Products 功能描述:1.4MHZ SOT23 CURRENT-MODE STEP-UP D - Cut Tape Product |
| MAX1896EUT#G16 | 制造商:Maxim Integrated Products 功能描述:1.4MHZ SOT23 CURRENT-MODE STEP-UP DC-DC CONVERTER - Rail/Tube |
| MAX1896EUT#TG16 | 功能描述:電流型 PWM 控制器 1.4MHz Current-Mode Step-Up RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX1896EUT+ | 制造商:Maxim Integrated Products 功能描述:1.4MHZ SOT23 CURRENT-MODE STEP-UP DC-DC CONVERTER - Rail/Tube |
| MAX1896EUT+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.4MHz Current-Mode Step-Up 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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