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參數資料
| 型號： | MIC5249-3.0BMM |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 300MA UCAP LDO WITH PROGRAMMABLE POWER ON RESET DELAY |
| 中文描述： | 3 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 40K |
| 代理商： | MIC5249-3.0BMM |
March 2004
1
M0382-033004
MIC5249
Micrel
MIC5249
300mA
μ
Cap LDO with Programmable Power-On Reset Delay
General Description
The MIC5249 is an efficient, precise 300mA CMOS voltage
regulator with power-on reset delay which can be imple-
mented via an external capacitor. It offers 1% initial accuracy,
extremely-low-dropout voltage (typically 400mV @ 300mA),
and low ground current (typically 85mA) over load.
Designed specifically for noise-critical applications in hand-
held or battery-powered devices, the MIC5249 comes
equipped with a noise reduction feature to filter the output
noise via an external capacitor. Other features of the MIC5249
include a logic compatible enable pin, current limit, thermal
shutdown, ultra-fast transient response, and an active clamp
to speed up device turnoff.
The MIC5249 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
The MIC5249 is available in the MSOP-8 package.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Typical Application
MIC5249-x.xBMM
IN
OUT
GND
V
IN
RESET
C
=2.2
μ
F
Ceramic
C
BYP
=0.01
μ
F
Sets the delay for
the RESET output
Ultra-Low-Noise Application
C
=1.0
μ
F
Ceramic
V
OUT
EN
DELAY
RESET
CBYP
SHENABLE
Features
300mA output current
High PSRR: 65dB@120Hz
Stable with ceramic output capacitor
Power-on RESET output with adjustable delay time
High output accuracy:
±
1.0% initial accuracy
±
3.0% over temperature
Low dropout voltage of 400mV @ 300mA
Low quiescent current: 85
μ
A
Zero current shutdown mode
Thermal shutdown protection
Current-limit protection
Tiny MSOP-8 package
Applications
Cellular phones
PDAs
Fiber optic modules
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Ordering Information
Part Number
MIC5249-1.8BMM
MIC5249-2.5BMM
MIC5249-2.6BMM
MIC5249-2.8BMM
MIC5249-2.85BMM
MIC5249-3.0BMM
* Other voltages available. Contact Micrel for details.
Voltage*
1.8V
2.5V
2.6V
2.8V
2.85V
3.0V
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
Package
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
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| MIC5249-2.5BMM | 300MA UCAP LDO WITH PROGRAMMABLE POWER ON RESET DELAY |
| MIC5249-2.6BMM | 300MA UCAP LDO WITH PROGRAMMABLE POWER ON RESET DELAY |
| MIC5249-2.85BMM | 300MA UCAP LDO WITH PROGRAMMABLE POWER ON RESET DELAY |
| MIC5249-2.8BMM | 300MA UCAP LDO WITH PROGRAMMABLE POWER ON RESET DELAY |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC5250 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Dual 150mA μCap CMOS LDO Regulator |
| MIC5250_03 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Dual 150mA μCap CMOS LDO Regulator |
| MIC5250-2.7BMM | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Dual 150mA μCap CMOS LDO Regulator |
| MIC5250-2.8BMM | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Dual 150mA レCap CMOS LDO Regulator Preliminary Information |
| MIC5250-3.0BMM | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Dual 150mA レCap CMOS LDO Regulator Preliminary Information |
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