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參數(shù)資料
| 型號(hào)： | MIC5256-3.0BM5 |
| 廠商： | MICREL INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150mA UCap LDO with Error Flag |
| 中文描述： | 3 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 115K |
| 代理商： | MIC5256-3.0BM5 |
MIC5256
Micrel
MIC5256
10
June 2003
The junction-to-ambient thermal resistance for the minimum
footprint is 235
°
C/W, from Table 1. The maximum power
dissipation must not be exceeded for proper operation. Using
the output voltage of 3.0V and an output current of 150mA,
the maximum input voltage can be determined. Because this
device is CMOS and the ground current is typically 100
μ
A
over the load range, the power dissipation contributed by the
ground current is < 1% and can be ignored for this calculation.
315mW = (V
IN
–
3.0V) 150mA
315mW = V
IN
·
150mA
–
450mW
810mW = V
IN
·
150mA
V
IN(max)
= 5.4V
Therefore, a 3.0V application at 150mA of output current can
accept a maximum input voltage of 5.4V in a SOT-23-5
package. For a full discussion of heat sinking and thermal
effects on voltage regulators, refer to the Regulator Thermals
section of Micrel
’
s Designing with Low-Dropout Voltage Regu-
latorshandbook.
Fixed Regulator Applications
1
5
2
3
4
V
OUT
MIC5256-x.xBM5
47k
V
IN
C
μ
F
Cera= 1.0
C
μ
F
Ce= 1.0
Figure 1. Low-Noise Fixed Voltage Application
Figure 1 shows a standard low-noise configuration with a
47k
pull-up resistor from the error flag to the input voltage
and a pull-down capacitor to ground for the purpose of fault
indication. EN (Pin 3) is connected to IN (Pin 1) for an
application where enable/shutdown is not required. C
OUT
=
1.0
μ
F minimum.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC5258 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:150mA UCap CMOS LDO Regulator w/Power Good |
| MIC5258_06 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:150mA μCap CMOS LDO Regulator w/Power Good |
| MIC5258-1.2BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC5258-1.2BM5 TR | 功能描述:IC REG LDO 1.2V .15A SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:12V 輸入電壓:14.5 V ~ 35 V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:500mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-205AD，TO-39-3 金屬罐 供應(yīng)商設(shè)備封裝:TO-39 包裝:散裝 其它名稱:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| MIC5258-1.2YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
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