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參數資料
| 型號： | LM2596R |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 3.0A, 150Khz, Step-Down Switching Regulator |
| 中文描述： | 3.0A的，設有150kHz，降壓型開關穩(wěn)壓器 |
| 文件頁數： | 8/11頁 |
| 文件大小： | 699K |
| 代理商： | LM2596R |
3.0A, 15V, Step-Down Switching Regulator
This pin is the positive input supply for the LM2596 step–down switching
regulator.In order to minimize voltage transients and to supply the switching
currents needed by the regulator, a suitable input bypass capacitor must be
present .(Cin in Figure 1).
This is the emitter of the internal switch. The saturation voltage Vsat of this
output switch is typically 1.5 V. It should be kept in mind that the PCB area
connected to this pin should be kept to a minimum in order to minimize
coupling to sensitive circuitry.
Circuit ground pin. See the information about the printed circuit board layout.
This pin senses regulated output voltage to complete the feedback loop.
The signal is divided by the internal resistor divider network R2, R1 and
applied to the non–inverting input of the internal error amplifier. In the
Adjustable version of the LM2596 switching regulator this pin is the direct
input of the error amplifier and the resistor network R2, R1 is connected
externally to allow programming of the output voltage.
It allows the switching regulator circuit to be shut down using logic level
signals, thus dropping the total input supply current to approximately 80 mA.
The threshold voltage is typically 1.4 V. Applying a voltage above this value
(up to +Vin) shuts the regulator off. If the voltage applied to this pin is lower
than 1.4V or if this pin is left open, the regulator will be in the "on" condition
4
5
ON/OFF
3
Description
Feedback
LM2596
HTC
8
Symbol
1
Vin
Output
2
Gnd
PIN FUNCTION DESCRIPTION
Oct 2004 - Rev 0
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PDF描述 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2596S | 制造商:Texas Instruments 功能描述: |
| LM2596S-12 | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2596S12 | 制造商:Texas Instruments 功能描述:IC SWITCHING REG 3A 12V SMD 2596 |
| LM2596S-12/NOPB | 功能描述:直流/直流開關轉換器 150 KHZ 3A STEP-DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2596S-3.3 | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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