參數(shù)資料
型號(hào)： MAX1790
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： Low-Noise Step-Up DC-DC Converter(低噪聲步升DC-DC轉(zhuǎn)換器)
中文描述： 低噪聲、升壓型DC-DC轉(zhuǎn)換器
文件頁數(shù)： 5/12頁
文件大?。?/td> 405K
代理商： MAX1790
M
Low-Noise Step-Up DC-DC Converter
_______________________________________________________________________________________
5
2ms/div
STARTUP WAVEFORM WITH
SOFT-START
M
CH1
CH2
CH3
CH1 = SHDN, 5V/div
CH2 = V
5V/div
CH3 = INDUCTOR CURRENT, 500mA/div
V
OUT
= 12V, I
OUT
= 200mA, f
OSC
= 640kHz,
C
SS
= 0.027
μ
F
CH1
CH2
CH3
CH1 = LX SWITCHING WAVEFORM, 5V/div
CH2 = OUTPUT VOLTAGE, AC-COUPLED, 200mV/div
CH3 = INDUCTOR CURRENT, 1A/div
V
OUT
= 12V, I
= 200mA, f
OSC
= 640kHz, L = 10
μ
H;
C
OUT
= 33
μ
F + 0.1
μ
F
500ns/div
SWITCHING WAVEFORM
M
0
400
200
800
600
1000
1200
1600
1400
1800
3.0
3.4 3.6 3.8
INPUT VOLTAGE (V)
3.2
4.0 4.2 4.4
4.8
4.6
5.0
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
M
M
f
OSC
= 640kHz
V
OUT
= 12V
V
OUT
= 5V
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
IN
= 3.3V, f
OSC
= 640kHz, T
A
= +25°C, unless otherwise noted.)
500mA
CH1
20mA
CH1 = LOAD CURRENT, 500mA/div
CH2 = OUTPUT VOLTAGE, AC-COUPLED, 200mV/div
CH3 = INDUCTOR CURRENT, 1A/div
V
OUT
= 5V, f
OSC
= 640kHz, C
OUT
= 47
μ
F + 0.1
μ
F
100
μ
s/div
LOAD-TRANSIENT RESPONSE
M
CH2
CH3
R
COMP
= 62k
C
COMP
= 820pF
C
COMP2
= 56pF
100
μ
s/div
STARTUP WAVEFORM WITHOUT
SOFT-START
M
CH1
CH2
CH3
CH1 = SHDN, 5V/div
CH2 = OUTPUT VOLTAGE, 5V/div
CH3 = INDUCTOR CURRENT, 1A/div
V
= 3.3V, V
= 12V, I
= 10mA, f
OSC
= 640kHz
NO SOFT-START CAPACITOR, C
OUT
= 33
μ
F
1ms/div
STARTUP WAVEFORM WITH
SOFT-START
M
CH1
CH2
CH3
CH1 = SHDN, 5V/div
CH2 = OUTPUT VOLTAGE, 5V/div
CH3 = INDUCTOR CURRENT, 200mA/div
V
OUT
= 12V, I
OUT
= 10mA, f
OSC
= 640kHz,
C
SS
= 0.027
μ
OUT
= 33
μ
F
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參數(shù)描述
MAX1790ESA+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX1790EUA 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Integrated Circuits (ICs) 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
MAX1790EUA+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Noise 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
MAX1790EUA+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Noise 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
MAX1790EUA+-T 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP UP 8PIN UMAX - Tape and Reel
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