- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358822 > LM2588T-5.0 (NATIONAL SEMICONDUCTOR CORP) SIMPLE SWITCHER 5A Flyback Regulator with PDF資料下載
參數(shù)資料
| 型號： | LM2588T-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER 5A Flyback Regulator with |
| 中文描述： | 9.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PSFM7 |
| 封裝： | BENT STAGGERED, TO-220, 7 PIN |
| 文件頁數(shù)： | 20/29頁 |
| 文件大?。?/td> | 786K |
| 代理商： | LM2588T-5.0 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
Step-Up (Boost) Regulator Operation
Figure 33 shows the LM2588 used as a step-up (boost)
regulator. This is a switching regulator that produces an out-
put voltage greater than the input supply voltage.
A brief explanation of how the LM2588 Boost Regulator
works is as follows (refer to Figure 33). When the NPN
switch turns on, the inductor current ramps up at the rate of
V
IN
/L, storing energy in the inductor. When the switch turns
off, the lower end of the inductor flies above V
, discharging
its current through diode (D) into the output capacitor (C
)
at a rate of (V
V
)/L. Thus, energy stored in the induc-
tor during the switch on time is transferred to the output dur-
ing the switch off time. The output voltage is controlled by
adjusting the peak switch current, as described in the flyback
regulator section.
By adding a small number of external components (as shown in Figure 33), the LM2588 can be used to produce a regulated out-
put voltage that is greater than the applied input voltage. The switching waveforms observed during the operation of this circuit
are shown in Figure 34 Typical performance of this regulator is shown in Figure 35
Typical Performance Characteristics
DS012420-49
FIGURE 33. 12V Boost Regulator
DS012420-62
A: Switch Voltage,10V/div
B: Switch Current, 5A/div
C: Inductor Current, 5A/div
D: Output Ripple Voltage,
100 mV/div, AC-Coupled
FIGURE 34. Switching Waveforms
DS012420-63
FIGURE 35. V
OUT
Response to Load Current Step
www.national.com
20
相關PDF資料 |
PDF描述 |
|---|---|
| LM2588T-3.3 | SIMPLE SWITCHER 5A Flyback Regulator with |
| LM2588T-12 | SIMPLE SWITCHER 5A Flyback Regulator with |
| LM2588S-5.0 | SIMPLE SWITCHER 5A Flyback Regulator with |
| LM2588SX-ADJ | SIMPLE SWITCHER 5A Flyback Regulator with |
| LM2588SX-3.3 | SIMPLE SWITCHER 5A Flyback Regulator with |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM2588T50 | 制造商:Texas Instruments 功能描述:SWITCHING REG 5A 5.0V 2588 TO-220 |
| LM2588T-ADJ | 功能描述:直流/直流開關轉(zhuǎn)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(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2588T-ADJ | 制造商:Texas Instruments 功能描述:SWITCHING REG 5A ADJ 2588 TO2207 |
| LM2588T-ADJ/NOPB | 功能描述:直流/直流開關轉(zhuǎn)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(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM258AD | 功能描述:運算放大器 - 運放 Dual Operational Amplifier RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。