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參數(shù)資料
| 型號： | LM78S40CNMDA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 3/13頁 |
| 文件大小： | 349K |
| 代理商： | LM78S40CNMDA |
Products > Analog - Regulators > Switching Voltage Regulators & PWM ICs > LM78S40
Generic P/N 78S40
General Description
National Semiconductor Company
Design
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LM78S40
Universal Switching Regulator Subsystem
Contents
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General Description
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Features
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Datasheet
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Package Availability, Models, Samples
& Pricing
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Application Notes
Parametric Table
On/Off Pin
No
Error Flag
No
Input Voltage, min (Volt)
2.50
Input Voltage, max (Volt)
40
Output Current, max
1.5 Amps
Adjustable Output Voltage
Yes
Switching Frequency (Hz)
100000
Adjustable Switching Frequency
Yes
Sync Pin
No
Flyback
Yes
Inverting
Yes
Step-Up
Yes
Step-Down
Yes
The LM78S40 is a monolithic regulator subsystem consisting of all the active building
blocks necessary for switching regulator systems. The device consists of a temperature
compensated voltage reference, a duty-cycle controllable oscillator with an active current
limit circuit, an error amplifier, high current, high voltage output switch, a power diode and
an uncommitted operational amplifier. The device can drive external NPN or PNP
transistors when currents in excess of 1.5A or voltages in excess of 40V are required. The
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參數(shù)描述 |
|---|---|
| LM78S40J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM78S40J/883 | 制造商:National Semiconductor Corporation 功能描述:Conv DC-DC Single Step Down 2.5V to 40V 16-Pin CDIP Rail 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 2.5V to 40V 16-Pin CDIP Rail |
| LM78S40N | 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 安裝風格:SMD/SMT |
| LM78S40N/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Uni Switching Reg Subsystem 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 安裝風格:SMD/SMT |
| LM78-SH1 | 功能描述:基本/快動開關(guān) Foot Switch RoHS:否 制造商:Omron Electronics 觸點形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
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