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参数资料
| 型号： | MIC3975-5.0BMM |
| 厂商： | Micrel Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .75A 8-MSOP |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 最高 16V |
| 电压 - 压降（标准）： | 0.3V @ 750mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 750mA（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
MIC3975
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
β eta 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 con-
vert 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 avail-
able. An adjustable output voltage option is available for
voltages down to 1.24V.
For other voltages, contact Micrel.
Ordering Information
Part Number
Micrel
MIC3975
750mA μCap Low-Voltage Low-Dropout Regulator
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-pro?le MSOP-8
Applications
? Fiber optic modules
? LDO linear regulator for PC add-in cards
? PowerPC? power supplies
? High-ef?ciency linear power supplies
? SMPS post regulator
? Multimedia and PC processor supplies
? Battery chargers
? Low-voltage microcontrollers and digital logic
Standard
MIC3975-1.65BMM
MIC3975-1.8BMM
MIC3975-2.5BMM
MIC3975-3.0BMM
MIC3975-3.3BMM
MIC3975-5.0BMM
MIC3975BMM
Pb-Free
MIC3975-1.65YMM
MIC3975-1.8YMM
MIC3975-2.5YMM
MIC3975-3.0YMM
MIC3975-3.3YMM
MIC3975-5.0YMM
MIC3975YMM
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
V IN
3.3V
ENABLE
SHUTDOWN
100k
MIC3975-2.5BMM
IN OUT
EN FLG
GND
R1
Error
Flag
Output
2.5V
10 ? F
ceramic
V IN
2.5V
ENABLE
SHUTDOWN
MIC3975BMM
IN OUT
EN ADJ
GND
R1
R2
1.5V
10 ? F
ceramic
2.5V/750mA Regulator with Error Flag
1.5V/750mA Adjustable Regulator
Super β eta PNP is a trademark of Micrel, 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
February 2005
1
MIC3975
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