參數(shù)資料
型號(hào): LM2674MX-3.3
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
中文描述: 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8
封裝: PLASTIC, SO-8
文件頁(yè)數(shù): 8/26頁(yè)
文件大?。?/td> 947K
代理商: LM2674MX-3.3
Typical Performance
Characteristics
(Circuit of
Figure 2
)
Continuous Mode Switching Waveforms
V
= 20V, V
OUT
= 5V, I
= 500 mA
L = 100 μH, C
OUT
= 100 μF, C
OUT
ESR = 0.1
Discontinuous Mode Switching Waveforms
V
= 20V, V
= 5V, I
= 300 mA
L = 15 μH, C
OUT
= 68 μF (2x), C
OUT
ESR = 25 m
10004118
A: V
SW
Pin Voltage, 10 V/div.
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 50 mV/div AC-Coupled
Horizontal Time Base: 1 μs/div
10004119
A: V
SW
Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Horizontal Time Base: 1 μs/div
Load Transient Response for Continuous Mode
V
IN
= 20V, V
= 5V,
L = 100 μH, C
OUT
= 100 μF, C
OUT
ESR = 0.1
Load Transient Response for Discontinuous Mode
V
IN
= 20V, V
= 5V,
L = 47 μH, C
OUT
= 68 μF, C
OUT
ESR = 50 m
10004120
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 500 mA Load Pulse
Horizontal Time Base: 50 μs/div
10004121
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 400 mA Load Pulse
Horizontal Time Base: 200 μs/div
L
www.national.com
8
相關(guān)PDF資料
PDF描述
LM2674MX-5.0 SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
LM2674MX-ADJ SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
LM2674N-12 SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
LM2674N-3.3 SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
LM2674LDX-3.3 SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2674MX-5.0 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
LM2674MX-5.0/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 PWR CONVERTER HI EFF 500MA SD VLTG REG 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
LM2674MX-ADJ 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
LM2674MX-ADJ/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 PWR CONVERTER HI EFF 500MA SD VLTG REG 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
LM2674N-12 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