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參數(shù)資料
| 型號(hào)： | MIC5203-4.5YM5TR |
| 廠商： | MICREL INC |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 4.5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO5 |
| 封裝： | LEAD FREE, SOT-23, 5 PIN |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 260K |
| 代理商： | MIC5203-4.5YM5TR |
Micrel, Inc.
MIC5203
Applications Information
November 2009
8
M9999-111909
Input Capacitor
A 0.1μF capacitor should be placed from IN to GND if
there is more than 10 inches of wire between the input
and the AC filter capacitor or when a battery is used as
the input.
Output Capacitor
Typical PNP based regulators require an output
capacitor to prevent oscillation. The MIC5203 is
ultrastable, requiring only 0.47μF of output capacitance
for stability. The regulator is stable with all types of
capacitors, including the tiny, low-ESR ceramic chip
capacitors. The output capacitor value can be increased
without limit to improve transient response.
The capacitor should have a resonant frequency above
500kHz. Ceramic capacitors work, but some dielectrics
have poor temperature coefficients, which will affect the
value of the output capacitor over temperature. Tantalum
capacitors are much more stable over temperature, but
typically are larger and more expensive. Aluminum
electrolytic capacitors will also work, but they have
electrolytes that freeze at about –30°C. Tantalum or
ceramic capacitors are recommended for operation
below –25°C.
No-Load Stability
The MIC5203 will remain stable and in regulation with no
load (other than the internal voltage divider) unlike many
other voltage regulators. This is especially important in
CMOS RAM keep-alive applications.
Enable Input
The MIC5203 features nearly zero off-mode current.
When EN (enable input) is held below 0.6V, all internal
circuitry is powered off. Pulling EN high (over 2.0V) re-
enables the device and allows operation. EN draws a
small amount of current, typically 15μA. While the logic
threshold is TTL/CMOS compatible, EN may be pulled
as high as 20V, independent of V
IN
.
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| MIC810JYC3 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC5203-5.0BM4 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:μCap 80mA Low-Dropout Regulator |
| MIC5203-5.0BM4 TR | 功能描述:IC REG LDO 5V 80MA SOT143 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC5203-5.0BM4TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| MIC5203-5.0BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC5203-5.0BM5 TR | 功能描述:IC REG LDO 5V 80MA 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 |
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