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MIC3975: 产品描述3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8; 产品类别半导体电源管理; 文件大小584KB，共12页; 制造商Microchip(微芯科技); 官网地址https://www.microchip.com

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MIC3975概述

3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8

MIC3975规格参数

参数名称	属性值
功能数量	1
端子数量	8
最大输出电流	0.7500 A
最大输出电压	3.06 V
最小输出电压	2.94 V
最大输入电压	16 V
最小输入电压	2.25 V
加工封装描述	MSOP-8
状态	ACTIVE
包装形状	SQUARE
包装尺寸	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
表面贴装	Yes
端子形式	GULL WING
端子间距	0.6500 mm
端子涂层	TIN LEAD
端子位置	DUAL
包装材料	PLASTIC/EPOXY
最大电压差	0.5000 V
调节类型	FIXED POSITIVE LDO REGULATOR
额定输出电压	3 V

文档解析

MIC3975 是一款 750mA 低 dropout 线性电压调节器，采用 Micrel 专有的 Super βeta PNP 技术，能够在极小的 MSOP-8 封装中提供高电流输出。其典型 dropout 电压为 300mV 在 750mA 负载下，最大 dropout 电压保证为 500mV，输入电压范围从 2.25V 到 16V，适用于多种电压转换场景，如从 5V 到 3.3V 或 3.0V 的转换。器件支持固定输出电压版本包括 5.0V、3.3V、3.0V、2.5V、1.8V 和 1.65V，以及可调版本输出电压低至 1.24V。关键特性包括低 ground current，典型值为 6.5mA 在满载时，有助于提高效率；稳定工作 with ceramic 电容，输出电容要求最低 4.7μF，推荐 10μF 以上；精度高达 1%，提供优秀的电压 regulation；还具备快速瞬态响应，确保在负载变化时输出电压稳定。内置全面保护功能，如过流限制、热关机和反向电池保护，error flag 输出监控输出电压，当电压低于设定值 5% 时发出信号，enable 输入允许逻辑控制开关机。应用领域广泛，包括光纤模块、PC 附加卡的 LDO 线性调节器、PowerPC 电源系统、高效线性电源、SMPS 后调节器、多媒体和 PC 处理器电源、电池充电器、低电压微控制器和数字逻辑。其高电流能力和低 dropout 特性使其特别适合电池供电系统和空间受限的应用。

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MIC3975

Micrel

MIC3975

750mA µCap Low-Voltage Low-Dropout Regulator

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 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.

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

Ordering Information

Part Number

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

Package

MSOP-8

Typical Applications

100k

3.3V

ENABLE

SHUTDOWN

MIC3975-2.5BMM

OUT

FLG

GND

Error

Flag

Output

2.5V

10F

ceramic

2.5V

ENABLE

SHUTDOWN

MIC3975BMM

OUT

ADJ

GND

1.5V

10F

ceramic

2.5V/750mA Regulator with Error Flag

Super

βeta

PNP is a trademark of Micrel, Inc.

1.5V/750mA Adjustable Regulator

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

MIC3975

MIC3975相似产品对比

	MIC3975	MIC3975-1.65BMM	MIC3975-1.8BMM	MIC3975-2.5BMM	MIC3975-3.0BMM	MIC3975-3.3BMM	MIC3975-5.0BMM	MIC3975BMM
描述	3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	3.3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	5 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8	3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8
功能数量	1	1	1	1	1	1	1	1
端子数量	8	8	8	8	8	8	8	8
表面贴装	Yes	YES	YES	YES	YES	YES	YES	YES
端子形式	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
端子位置	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
最大输入电压	16 V	16 V	16 V	16 V	16 V	16 V	16 V	-
最小输入电压	2.25 V	2.25 V	2.25 V	2.25 V	2.25 V	2.25 V	6 V	-
是否Rohs认证	-	不符合	不符合	不符合	不符合	不符合	不符合	不符合
厂商名称	-	Microchip(微芯科技)	Microchip(微芯科技)	Microchip(微芯科技)	Microchip(微芯科技)	Microchip(微芯科技)	Microchip(微芯科技)	Microchip(微芯科技)
零件包装代码	-	MSOP	MSOP	MSOP	MSOP	MSOP	MSOP	MSOP
包装说明	-	MSOP-8	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	TSSOP,
针数	-	8	8	8	8	8	8	8
Reach Compliance Code	-	not_compliant	not_compliant	_compli	not_compliant	not_compliant	not_compliant	compliant
ECCN代码	-	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
可调性	-	FIXED	FIXED	FIXED	FIXED	FIXED	FIXED	-
最大回动电压 1	-	0.5 V	0.5 V	0.5 V	0.5 V	0.5 V	0.5 V	0.5 V
标称回动电压 1	-	0.3 V	0.3 V	0.3 V	0.3 V	0.3 V	0.3 V	-
最大绝对输入电压	-	20 V	20 V	20 V	20 V	20 V	20 V	-
JESD-30 代码	-	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	R-PDSO-G8
JESD-609代码	-	e0	e0	e0	e0	e0	e0	-
长度	-	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm
湿度敏感等级	-	1	1	1	1	1	1	-
输出次数	-	1	1	1	1	1	1	-
工作温度TJ-Max	-	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C
工作温度TJ-Min	-	-40 °C	-40 °C	-	-40 °C	-40 °C	-40 °C	-40 °C
最大输出电流 1	-	0.75 A	0.75 A	0.75 A	0.75 A	0.75 A	0.75 A	0.75 A
最大输出电压 1	-	1.683 V	1.836 V	2.55 V	3.06 V	3.366 V	5.1 V	16 V
最小输出电压 1	-	1.617 V	1.764 V	2.45 V	2.94 V	3.234 V	4.9 V	1.24 V
标称输出电压 1	-	1.65 V	1.8 V	2.5 V	3 V	3.3 V	5 V	-
封装主体材料	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	-	TSSOP	TSSOP	TSSOP	TSSOP	TSSOP	TSSOP	TSSOP
封装等效代码	-	TSSOP8,.19	TSSOP8,.19	TSSOP8,.19	TSSOP8,.19	TSSOP8,.19	TSSOP8,.19	-
封装形状	-	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	RECTANGULAR
封装形式	-	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	-	240	240	240	240	240	240	NOT SPECIFIED
认证状态	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-
调节器类型	-	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度	-	1.1 mm	1.1 mm	1.1 mm	1.1 mm	1.1 mm	1.1 mm	1.09 mm
技术	-	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	-
端子面层	-	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	-
端子节距	-	0.65 mm	0.65 mm	0.65 mm	0.65 mm	0.65 mm	0.65 mm	0.65 mm
处于峰值回流温度下的最长时间	-	30	30	30	30	30	30	NOT SPECIFIED
最大电压容差	-	2%	2%	2%	2%	2%	2%	-
宽度	-	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	2.97 mm
Base Number Matches	-	1	1	1	1	1	1	1

MIC3975

MIC3975概述

MIC3975规格参数

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MIC3975相似产品对比

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