- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358843 > LM3411M5-3.3 (NATIONAL SEMICONDUCTOR CORP) Hook-Up Wire; Conductor Size AWG:22; No. Strands x Strand Size:7 x 30; Jacket Color:White/Red; Cable/Wire MIL SPEC:MIL-W-16878/1 Type B; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes PDF資料下載
參數(shù)資料
| 型號(hào)： | LM3411M5-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Hook-Up Wire; Conductor Size AWG:22; No. Strands x Strand Size:7 x 30; Jacket Color:White/Red; Cable/Wire MIL SPEC:MIL-W-16878/1 Type B; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes |
| 中文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 3.3 V, PDSO5 |
| 封裝： | SOT-23, SOP-5 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 350K |
| 代理商： | LM3411M5-3.3 |
Applications Information
The LM3411 regulator/driver provides the reference and
feedback drive functions in a regulated power supply. It can
also be used together with many different types of regula-
tors, (both linear and switching) as well as other power semi-
conductor devices to add precision and improve regulation
specifications. Output voltage tolerances better than 0.5%
are possible without using trim pots or precision resistors.
One of the main applications of the LM3411 is to drive an
opto-isolator to provide feedback signal isolation in a switch-
ing regulator circuit. For low current applications, (up to 250
mA) the circuit shown in Figure 3 provides good regulation
and complete input/output electrical isolation.
For an input voltage of 15V, this circuit can provide an output
of either 3.3V or 5V with a load current up to 250 mAwith ex-
cellent regulation characteristics. With the part values
shown, this circuit operates at 80 kHz., and can be synchro-
nized to a clock or an additional LM3578. (See LM1578 data
sheet for additional information.)
An isolated DC/DC flyback converter capable of higher out-
put current is shown in Figure 4 This circuit utilizes the
LM2577 SIMPLE SWITCHER
voltage regulator for the
Pulse Width Modulation (PWM), power switch and protection
functions, while the LM3411 provides the voltage reference,
gain and opto coupler drive functions. In this circuit, the ref-
erence and error amplifier in the LM2577 are not used (note
that the feedback pin is grounded). The gain is provided by
the LM3411. Since the voltage reference is located on the
secondary side of the transformer, this circuit provides very
good regulation specifications.
The output of a switching regulator typically will contain a
small ripple voltage at the switching frequency and may also
contain voltage transients. These transient voltage spikes
can be sensed by the LM3411 and could give an incorrect
regulation voltage. An RC filter consisting of a 1
resistor
and a 100 nF capacitor will filter these transients and mini-
mize this problem. The 1
resistor should be located on the
ground side of the LM3411, and the capacitor should be
physically located near the package.
DS011987-15
FIGURE 3. Isolated 250 mA Flyback Switching Regulator
DS011987-16
FIGURE 4. Isolated 1.5A Flyback Switching Regulator Using a LM2577
L
www.national.com
8
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM3411AM5-5.0 | Precision Secondary Regulator/Driver |
| LM3411AM5X-5.0 | Precision Secondary Regulator/Driver |
| LM3411M5X-5.0 | Precision Secondary Regulator/Driver |
| LM3411 | Precision Secondary Regulator/Driver |
| LM3420-4.2 | Lithium-Ion Battery Charge Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3411M5-5.0 | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| LM3411M5-5.0/NOPB | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 PREC SECONDARY REG/ DRVR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| LM3411M5-5.0/NOPB | 制造商:Texas Instruments 功能描述:Linear Voltage Regulator IC |
| LM3411M5X-3.3 | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| LM3411M5X-3.3/NOPB | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。