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MIC3975-2.5BMM 参数 Datasheet PDF下载

MIC3975-2.5BMM图片预览
型号: MIC3975-2.5BMM
PDF下载: 下载PDF文件 查看货源
内容描述: 750毫安UCAP低电压低压差稳压器 [750mA UCap Low-Voltage Low-Dropout Regulator]
分类和应用: 稳压器
文件页数/大小: 12 页 / 107 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC3975
Micrel
MIC3975
750mA
µ
Cap Low-Voltage Low-Dropout Regulator
Final Information
General Description
The MIC3975 is a 750mA low-dropout linear voltage regula-
tors that provide low-voltage, high-current output from an
extremely small package. Utilizing Micrel’s proprietary Super
βeta
PNP™ pass element, the MIC3975 offers extremely low
dropout (typically 300mV at 750mA) and low ground current
(typically 6.5mA at 750mA).
The MIC3975 is ideal for PC add-in cards that need to convert
from standard 5V to 3.3V or 3.0V, 3.3V to 2.5V or 2.5V to 1.8V
or 1.65V. A guaranteed maximum dropout voltage of 500mV
over all operating conditions allows the MIC3975 to provide
2.5V from a supply as low as 3.0V and 1.8V or 1.65V from a
supply as low as 2.25V.
The MIC3975 is fully protected with overcurrent limiting,
thermal shutdown, and reversed-battery protection. Fixed
voltages of 5.0V, 3.3V, 3.0, 2.5V, 1.8V, and 1.65V are
available. An adjustable output voltage option is available for
voltages down to 1.24V.
Features
• Fixed and adjustable output voltages to 1.24V
• 300mV typical dropout at 750mA
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V or 1.65V conversion
• Stable with ceramic capacitor
• 750mA minimum guaranteed output current
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed-battery protection
• Reversed-leakage protection
• Fast transient response
• Low-profile MSOP-8
Applications
Fiber optic modules
LDO linear regulator for PC add-in cards
PowerPC™ power supplies
High-efficiency linear power supplies
SMPS post regulator
Multimedia and PC processor supplies
Battery chargers
Low-voltage microcontrollers and digital logic
For other voltages, contact Micrel.
Ordering Information
Part Number
MIC3975-1.65BMM
MIC3975-1.8BMM
MIC3975-2.5BMM
MIC3975-3.0BMM
MIC3975-3.3BMM
MIC3975-5.0BMM
MIC3975BMM
Voltage
1.65V
1.8V
2.5V
3.0V
3.3V
5.0V
Adj.
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
Package
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
Typical Applications
100k
V
IN
3.3V
ENABLE
SHUTDOWN
MIC3975-2.5BMM
IN
OUT
R1
EN
FLG
GND
Error
Flag
Output
2.5V
10µF
ceramic
V
IN
2.5V
ENABLE
SHUTDOWN
MIC3975BMM
IN
OUT
R1
EN
ADJ
GND
R2
1.5V
10µF
ceramic
2.5V/750mA Regulator with Error Flag
Super
βeta
PNP is a trademark of Micrel, Inc.
1.5V/750mA Adjustable Regulator
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
February 2003
1
MIC3975