欢迎访问ic37.com |
会员登录 免费注册
发布采购

MIC39300-2.5WU 参数 Datasheet PDF下载

MIC39300-2.5WU图片预览
型号: MIC39300-2.5WU
PDF下载: 下载PDF文件 查看货源
内容描述: 3A ,低电压低压差稳压器 [3A, Low-Voltage Low-Dropout Regulator]
分类和应用: 稳压器
文件页数/大小: 13 页 / 318 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
 浏览型号MIC39300-2.5WU的Datasheet PDF文件第2页浏览型号MIC39300-2.5WU的Datasheet PDF文件第3页浏览型号MIC39300-2.5WU的Datasheet PDF文件第4页浏览型号MIC39300-2.5WU的Datasheet PDF文件第5页浏览型号MIC39300-2.5WU的Datasheet PDF文件第6页浏览型号MIC39300-2.5WU的Datasheet PDF文件第7页浏览型号MIC39300-2.5WU的Datasheet PDF文件第8页浏览型号MIC39300-2.5WU的Datasheet PDF文件第9页  
MIC39300/39301/39302
3A, Low-Voltage Low-Dropout Regulator
General Description
The MIC39300, MIC39301 and MIC39302 are 3.0A low-
dropout linear voltage regulators that provide a low
voltage, high-current output with a minimum of external
components. Utilizing Micrel’s proprietary Super
βeta
®
PNP pass element, the MIC39300/1/2 offers extremely
low dropout (typically 385mV at 3.0A) and low ground
current (typically 36mA at 3.0A).
The MIC39300/1/2 is ideal for PC add-in cards that need
to convert from standard 3.3V to 2.5V or 2.5V to 1.8V. A
guaranteed maximum dropout voltage of 500mV over all
operating conditions allows the MIC39300/1/2 to provide
2.5V from a supply as low as 3V, and 1.8V from a supply
as low as 2.5V. The MIC39300/1/2 also has fast transient
response for heavy switching applications. The device
requires only 47µF of output capacitance to maintain
stability and achieve fast transient response.
The MIC39300/1/2 is fully protected with overcurrent
limiting, thermal shutdown, reversed-battery protection,
reversed-leakage protection, and reversed-lead insertion.
The MIC39301 offers a TTL-logic compatible enable pin
and an error flag that indicates under voltage and over
current conditions. Offered in fixed voltages, the
MIC39300/1 comes in the TO-220 and TO-263 (D
2
Pak)
packages and is an ideal upgrade to older, NPN-based
linear voltage regulators. The MIC39302 adjustable option
allows programming the output voltage anywhere between
1.24V and 15.5V and is offered in a 5-Pin, TO-263 (D
2
Pak)
package.
Features
3.0A minimum guaranteed output current
550mV maximum dropout voltage over temperature
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V conversion
1% initial accuracy
Low ground current
Current limiting and Thermal shutdown
Reversed-battery protection
Reversed-leakage protection
Fast transient response
TO-263 (D
2
Pak) and TO-220 packaging
TTL/CMOS compatible enable pin (MIC39301/2 only)
Error flag output (MIC39301 only)
Adjustable output (MIC39302 only)
Applications
LDO linear regulator for PC add-in cards
High-efficiency linear power supplies
SMPS post regulator
Multimedia and PC processor supplies
Low-voltage microcontrollers
StrongARM™ processor supply
_________________________________________________________________________________________________________________________
Typical Application
MIC39300
MIC39301
MIC39302 Adjustable Output Application
(*See Minimum Load Current Section)
**See Thermal Load Current Section
Super
βeta
PNP is a registered trademark of Micrel, Inc.
StrongARM is a trademark of Advanced RISC Machines, Ltd
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 2009
M9999-102309-A