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參數(shù)資料
| 型號： | LM2588SX-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, PSSO7 |
| 封裝： | TO-263, 7 PIN |
| 文件頁數(shù)： | 20/29頁 |
| 文件大?。?/td> | 786K |
| 代理商： | LM2588SX-5.0 |
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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
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PDF描述 |
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| LM2588S-12 | Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs 20-TSSOP -40 to 85 |
| LM2588S-3.3 | SIMPLE SWITCHER 5A Flyback Regulator with |
| LM2588S-ADJ | Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs 20-TSSOP -40 to 85 |
| LM2588T-ADJ | SIMPLE SWITCHER 5A Flyback Regulator with |
| LM2588T-5.0 | SIMPLE SWITCHER 5A Flyback Regulator with |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2588SX-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 |
| LM2588SX-ADJ/NOPB | 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 |
| LM2588T-12 | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:SWITCHING REG 5A 12V 2588 TO2207 |
| LM2588T12 | 制造商:Texas Instruments 功能描述:SWITCHING REG 5A 12V 2588 TO2207 |
| LM2588T-12/NOPB | 功能描述:IC REG MULTI CONFIG 12V TO220-7 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:SIMPLE SWITCHER® 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
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