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參數(shù)資料
| 型號： | MIC2219-PSBML |
| 廠商： | MICREL INC |
| 元件分類： | 固定正電壓多路輸出LDO穩(wěn)壓器 |
| 英文描述： | Dynamically Adjustable Dual uCap LDO |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, DSO10 |
| 封裝： | 3 X 3 MM, MLF-10 |
| 文件頁數(shù)： | 10/10頁 |
| 文件大?。?/td> | 219K |
| 代理商： | MIC2219-PSBML |
April 2005
9
M9999-042105
MIC2219
Micrel, Inc.
Functional Diagram
OUT1
FB1
OUT2
FB2
GND
EN2
CBYP
EN1
VIN
LDO1
LDO2
Reference
MIC2219 Fixed Voltage Block Diagram
Functional Description
The MIC2219 is a high performance, low quiescent current
power management IC consisting of two Cap low-dropout
regulators. The first regulator is capable of sourcing 150mA
at output voltages from 1.25V to 5V. The second regulator is
capable of sourcing 300mA of current at output voltages from
1.25V to 5V.
Enable 1 and 2
The enable inputs allow for logic control of both output
voltages with individual enable inputs. The enable input is
active high, requiring 1.8V for guaranteed operation. The
enable input is CMOS logic and cannot by left floating.
Input Capacitor
Good bypassing is recommended from input to ground to
help improve AC performance. A 1F capacitor or greater
located close to the IC is recommended.
Bypass Capacitor
The internal reference voltage of the MIC2219 can be by-
passed with a capacitor to ground to reduce output noise and
increase power supply rejection (PSRR). A quick-start fea-
ture allows for quick turn-on of the output voltage regardless
of the size of the capacitor. The recommended nominal
bypass capacitor is 0.01F, but it can be increased without
limit.
Output Capacitor
Each regulator output requires a 1F ceramic output capaci-
tor for stability. The output capacitor value can be increased
to improve transient response, but performance has been
optimized for a 1F ceramic type output capacitor.
X7R/X5R dielectric-type ceramic capacitors are recom-
mended because of their temperature performance. X7R-
type capacitors change capacitance by 15% over their oper-
ating temperature range and are the most stable type of
ceramic capacitors. Z5U and Y5V dielectric capacitors change
value by as much as 50% and 60% respectively over their
operating temperature ranges. To use a ceramic chip capaci-
tor with Y5V dielectric, the value must be much higher than an
X7R ceramic capacitor to ensure the same minimum capaci-
tance over the equivalent operating temperature range.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2219-PSBML TR | 功能描述:IC REG LDO 3V/3.3V 10-MLF 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（最小）:- 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 |
| MIC2219-PSYML | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Dynamically Adjustable Dual uCap LDO |
| MIC2219-PSYML TR | 功能描述:低壓差穩(wěn)壓器 - LDO Dynamically Adjustable Dual 150mA/300mA Cap in 3mm x 3mm MLF (Lead Free) RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MIC22200 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:2A Integrated Switch Synchronous Buck Regulator with Frequency Programmable from 800kHz to 4MHz |
| MIC22200YML | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:2A Integrated Switch Synchronous Buck Regulator with Frequency Programmable from 800kHz to 4MHz |
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