參數(shù)資料
型號(hào): LM2594MX-ADJ
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Voltage-Mode SMPS Controller
中文描述: 電壓模式開(kāi)關(guān)電源控制器
文件頁(yè)數(shù): 17/28頁(yè)
文件大小: 739K
代理商: LM2594MX-ADJ
LM2594/LM2594HV Series Buck Regulator Design Procedure
(Continued)
Block Diagram
Application Information
PIN FUNCTIONS
+V
IN
—This is the positive input supply for the IC switching
regulator. A suitable input bypass capacitor must be present
at this pin to minimize voltage transients and to supply the
switching currents needed by the regulator.
Ground
—Circuit ground.
Output
—Internal switch. The voltage at this pin switches
between (+V
IN
V
SAT
) and approximately 0.5V, with a duty
cycle of V
OUT
/V
IN
. To minimize coupling to sensitive circuitry,
the PC board copper area connected to this pin should be
kept to a minimum.
VR
1A Diodes
Surface Mount
Through Hole
Schot-
tky
Schottky
Ultra Fast
Ultra Fast
Recovery
All of
these
diodes are
rated to at
least 60V.
Recovery
All of these
20V
1N5817
SR102
1N5818
SR103
11DQ03
1N5819
SR104
11DQ04
SR105
MBR150
11DQ05
MBR160
SB160
11DQ10
diodes are
rated to at
least 60V.
MBRS130
30V
MBRS140
10BQ040
10MQ040
MBRS160
10BQ050
10MQ060
MBRS1100
10MQ090
SGL41-60
SS16
MURS120
10BF10
MUR120
HER101
11DF1
40V
50V
or
more
FIGURE 11. Diode Selection Table
DS012439-21
FIGURE 12.
L
www.national.com
17
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2594MX-ADJ/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2594N-12 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2594N12 制造商:Texas Instruments 功能描述:SWITCHING REG 0.5A 12V 2594 DIP8
LM2594N-12/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2594N-3.3 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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