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參數(shù)資料
| 型號： | MIC49150BR |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1.5A Low Voltage LDO Regulator w/Dual Input Voltages |
| 中文描述： | 0.9 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO5 |
| 封裝： | S-PAK-5 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 94K |
| 代理商： | MIC49150BR |
MIC49150
Micrel
MIC49150
10
January 2002
Quick Method
Determine the power dissipation requirements for the design
along with the maximum ambient temperature at which the
device will be operated. Refer to Figure 3, which shows safe
operating curves for three different ambient temperatures:
25
°
C, 50
°
C and 85
°
C. From these curves, the minimum
amount of copper can be determined by knowing the maxi-
mum power dissipation required. If the maximum ambient
temperature is 50
°
C and the power dissipation is as above,
513mW, the curve in Figure 3 shows that the required area of
copper is less than 100mm
2
.
The
θ
JA
of this package is ideally 80
°
C/W, but it will vary
depending upon the availability of copper ground plane to
which it is attached.
Adjustable Regulator Design
The MIC49150 adjustable version allows programming the
output voltage anywhere between 0.9Vand 5V. Two resistors
are used. The resistor value between V
OUT
and the adjust pin
should not exceed 10k
. Larger values can cause instability.
The resistor values are calculated by:
R1 R2
V
OUT
0 9
.
×
1
–
Where V
OUT
is the desired output voltage.
Enable
The fixed output voltage versions of the MIC49150 feature an
active high enable input (EN) that allows on-off control of the
regulator. Current drain reduces to
“
zero
”
when the device is
shutdown, with only microamperes of leakage current. The
EN input has TTL/CMOS compatible thresholds for simple
logic interfacing. EN may be directly tied to V
IN
and pulled up
to the maximum supply voltage
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC49150BR TR | 功能描述:IC REG LDO ADJ 1.5A SPAK-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）: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 |
| MIC49150WR | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Supply, LV 1.5A LDO(ROHS Compliant) 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 |
| MIC49150WR TR | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Supply, LV 1.5A LDO(ROHS Compliant) 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 |
| MIC49150WRTR | 制造商:Micrel Inc 功能描述: 制造商:Micrel Inc 功能描述:0.9 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO5 制造商:Micron Technology Inc 功能描述:0.9 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO5 |
| MIC49150YMM | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Supply, LV 1.5A LDO(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 |
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