参数资料
型号: MIC5247-1.85BM5 TR
厂商: Micrel Inc
文件页数: 1/11页
文件大小: 0K
描述: IC REG LDO 1.85V .15A SOT23-5
标准包装: 3,000
稳压器拓扑结构: 正,固定式
输出电压: 1.85V
输入电压: 2.7 V ~ 6 V
电压 - 压降(标准): 0.15V @ 150mA
稳压器数量: 1
电流 - 输出: 150mA
电流 - 限制(最小): 160mA
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 带卷 (TR)
其它名称: MIC5247-1.85BM5TR
MIC5247-1.85BM5TR-ND
MIC5247
General Description
The MIC5247 is an ef?cient and precise, low-voltage CMOS
voltage regulator optimized for ultra-low noise applications.
The MIC5247 offers better than 1% initial accuracy and
85 μ A constant ground current over load (typically 85 μ A).
The MIC5247 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 speci?cally for handheld and battery-powered de-
vices, the MIC5247 provides a logic compatible enable pin.
When disabled, power consumption drops nearly to zero.
The MIC5247 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in handheld 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 6-pin 2mm × 2mm
MLF? package and the IttyBitty ? SOT-23-5 package, the
MIC5247 also offers a range of ?xed output voltages.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Typical Application
Micrel, Inc.
MIC5247
150mA Low-Voltage μ Cap Linear Regulator
Features
? Ultra-low noise
? Low-voltage outputs
? Load independent, ultra-low ground current: 85 μ A
? 150mA output current
? Current limiting
? Thermal shutdown
? Tight load and line regulation
? “Zero” off-mode current
? Stability with low-ESR capacitors
? Fast transient response
? 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-ef?ciency linear power supplies
C OUT
C BYP
(optional)
1
V IN MIC5247-x.xBM5 V OUT
2
Enable 3 4
Shutdown
EN
EN (pin 3) may be
connected directly
to IN (pin 1).
ENABLE
SHUTDOWN
V IN
EN
MIC5247-x.xBML
1 6
2 5
3 4
C BYP
(optional)
V OUT
C OUT
Ultra-Low-Noise Regulator Application
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
February 2006
1
M9999-022406
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