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參數資料
| 型號： | MIC5245 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | 150mA μCap CMOS LDO Regulator(輸出電流150mA μCap技術的CMOS低壓差穩壓器) |
| 中文描述： | 150mA的μCap的CMOS LDO穩壓器（輸出電流為150mAμCap技術的的CMOS低壓差穩壓器） |
| 文件頁數： | 1/12頁 |
| 文件大小： | 126K |
| 代理商： | MIC5245 |
MIC5245
Micrel
January 2001
1
MIC5245
General Description
The MIC5245 is an efficient, precise CMOS voltage regulator
optimized for ultra-low-noise applications. The MIC5245 of-
fers better than 1% initial accuracy, extremely low dropout
voltage (typically 150mV at 150mA) and constant ground
current over load (typically 100
μ
A). The MIC5245 provides a
very low noise output, ideal for RF applications where quiet
voltage sources are required. A noise bypass pin is also
available for further reduction of output noise.
Designed specifically for hand-held and battery-powered
devices, the MIC5245 provides a TTL logic compatible en-
able pin. When disabled, power consumption drops nearly to
zero.
The MIC5245 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
Key features include current limit, thermal shutdown, a push-
pull output for faster transient response, and an active clamp
to speed up device turnoff. Available in the IttyBitty SOT-23-5
and power MSO-8 packages, the MIC5245 also offers a
range of fixed output voltages.
Typical Application
1
5
2
3
4
C
OUT
C
(optional)
Enable
Shutdown
EN
V
OUT
MIC5245-x.xBM5
EN (pin 3) may be
connected directly
o IN (pin 1).
V
IN
MIC5245
150mA
μ
Cap CMOS LDO Regulator
Features
Ultralow dropout
—
100mV @ 100mA
Ultralow noise
—
30
μ
V(rms)
Stability with tantalum or ceramic capacitors
Load independent, ultralow ground current
150mA output current
Current limiting
Thermal Shutdown
Tight load and line regulation
“
Zero
”
off-mode current
Fast transient response
TTL-Logic-controlled enable input
Applications
Cellular phones and pagers
Cellular accessories
Battery-powered equipment
Laptop, notebook, and palmtop computers
PCMCIA V
CC
and V
PP
regulation/switching
Consumer/personal electronics
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Ordering Information
Part Number
MIC5245-2.5BM5
MIC5245-2.7BM5
MIC5245-2.8BM5
MIC5245-2.85BM5
MIC5245-3.0BM5
MIC5245-3.1BM5
MIC5245-3.2BM5
MIC5245-3.3BM5
MIC5245-3.3BMM
Other voltages available. Contact Micrel for details.
Marking
LS25
LS27
LS28
LS2J
LS30
LS31
LS32
LS33
—
Voltage
2.5V
2.7V
2.8V
2.85V
3.0V
3.1V
3.2V
3.3V
3.3V
Junction Temp. Range
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
–
40
°
C to +125
°
C
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
MSOP-8
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
1
2
3
4
8
7
6
5
MIC5245-3.3MM
ENABLE
SHUTDOWN
V
IN
C
BYP
(OPTIONAL)
V
OUT
C
OUT
Ultra-Low-Noise Regulator Application
相關PDF資料 |
PDF描述 |
|---|---|
| MIC5254 | DUAL 150MA UCAP LDO WITH ERROR FLAG OUTPUTS |
| MIC5254-SJBMM | DUAL 150MA UCAP LDO WITH ERROR FLAG OUTPUTS |
| MIC5256-3.0BM5 | 150mA UCap LDO with Error Flag |
| MIC5256-3.3BM5 | 150mA UCap LDO with Error Flag |
| MIC5256 | 4.5V to 20V, 6A Synchronous Step Down SWIFT? Converter 16-HTSSOP -40 to 150 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC5245_02 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:150mA μCap CMOS LDO Regulator |
| MIC5245-2.5BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC5245-2.5BM5 TR | 功能描述:IC REG LDO 2.5V .15A SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:500 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:12V 輸入電壓:14.5 V ~ 35 V 電壓 - 壓降（標準）:- 穩壓器數量:1 電流 - 輸出:500mA 電流 - 限制（最小）:- 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 供應商設備封裝:TO-39 包裝:散裝 其它名稱:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| MIC5245-2.5YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC5245-2.5YM5 TR | 功能描述:低壓差穩壓器 - LDO Low Noise, IttyBitty CMOS 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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