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参数资料
| 型号： | MIC5255-2.85BD5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.85V .15A TSOT23-5 |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.85V |
| 输入电压： | 最高 6V |
| 电压 - 压降（标准）： | 0.135V @ 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： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC5255-2.85BD5TR MIC5255-2.85BD5TR-ND |
MIC5255
150mA Low Noise μCap CMOS LDO
device turn-off. Available in the 6-pin 2mm × 2mm MLF
General Description
The MIC5255 is an efficient, precise CMOS voltage
regulator optimized for ultra-low-noise applications. It
offers 1% initial accuracy, extremely-low dropout voltage
(135mV at 150mA) and low ground current (typically
90μA). The MIC5255 provides a very-low-noise output,
ideal for RF applications where a clean voltage source is
required. A noise bypass pin is also available for further
reduction of output noise.
Designed speci ? cally for handheld and battery-powered
devices, the MIC5255 provides a TTL-logic-compatible en-
able pin. When disabled, power consumption drops nearly
to zero.
The MIC5255 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, faster
transient response, and an active clamp to speed up
?
package, the IttyBitty ? SOT-23-5 package and the new
Thin SOT-23-5, which offers the same footprint as the
standard IttyBitty ? SOT-23-5, but only 1mm tall. The
MIC5255 offers a range of output voltages.
Data sheets and support documentation can be found on
Features
? Input voltage range: 2.7V to 6.0V
? Thin SOT package: 1mm height SOT-23-5
? Ultra-low output noise: 30μV(rms)
? Stability with ceramic output capacitors
? Ultra-low dropout: 135mV @ 150mA
? High output accuracy:
– 1.0% initial accuracy
– 2.0% over temperature
? Low quiescent current: 90μA
? Tight load and line regulation
? TTL-Logic-controlled enable input
? “Zero” off-mode current
? Thermal shutdown and current limit protection
Applications
? Cellular phones and pagers
? Cellular accessories
? Battery-powered equipment
? Laptop, notebook, and palmtop computers
? Consumer/personal electronics
Micrel’s web site at www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
C IN = 1.0μF
Ceramic
Enable
Shutdown
V IN
EN
MIC5255-x.x_M5
1 5
2
3 4
V OUT
C OUT = 1.0μF
Ceramic
EN (pin 3) may be
connected directly
to IN (pin 1).
C BYP = 0.01μF
Ultra-Low-Noise Regulator Application
IttyBitty is a registered trademark of Micrel, Inc
MLF and Micro LeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
November 2006
1
M9999-110906
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