MIC5205-2.85YM5中文资料应用文章市场行情现货热卖使用介绍-中国IC网-芯三七

当前位置：IC37首页_>M字母起始型号索引_>M字母起始型号索引第889页更新时间：2025-01-25 17:30:06

产品型号MIC5205-2.85YM5的概述

芯片MIC5205-2.85YM5的概述 MIC5205-2.85YM5是一种线性稳压器芯片，专门设计用于提供稳定的输出电压。该芯片的输出电压为2.85伏特，适用于多种电子设备中的电源管理应用。基于低压差（LDO）技术，MIC5205系列稳压器能够在较低的输入电压下提供稳定的输出，进而满足不同电源需求。它的设计理念强调了低噪声、低功耗以及高稳定性的特点，是许多便携设备、电池供电应用和低功耗电路的理想选择。芯片MIC5205-2.85YM5的详细参数 MIC5205-2.85YM5的技术参数如下： - 输出电压：2.85V - 输入电压范围：2.3V至16V - 输出电流：最大150mA - 压差（Dropout Voltage）：通常为0.15V（在150mA负载下） - 静态电流：最大为30μA - 工作温度范围：-40°C至85°C - 短路保护：内置短路保护功能 - 过热保护：...

产品型号MIC5205-2.85YM5的Datasheet PDF文件预览

MIC5205

150mA Low-Noise LDO Regulator

General Description

Features

The MIC5205 is an efficient linear voltage regulator with

ultra low-noise output, very low dropout voltage (typically

17mV at light loads and 165mV at 150mA), and very low

ground current (600⎧A at 100mA output). The MIC5205

offers better than 1% initial accuracy.

• Ultra-low-noise output

• High output voltage accuracy

• Guaranteed 150mA output

• Low quiescent current

• Low dropout voltage

Designed especially for hand-held, battery-powered

devices, the MIC5205 includes a CMOS or TTL compatible

enable/shutdown control input. When shut down, power

consumption drops nearly to zero. Regulator ground

current increases only slightly in dropout, further

prolonging battery life.

• Extremely tight load and line regulation

• Very low temperature coefficient

• Current and thermal limiting

• Reverse-battery protection

• “Zero” off-mode current

Key MIC5205 features include a reference bypass pin to

improve its already excellent low-noise performance,

reversed-battery protection, current limiting, and

overtemperature shutdown.

• Logic-controlled electronic enable

Applications

The MIC5205 is available in fixed and adjustable output

voltage versions in a small SOT-23-5 package.

• Cellular telephones

• Laptop, notebook, and palmtop computers

• Battery-powered equipment

For low-dropout regulators that are stable with ceramic

output capacitors, see the µCap MIC5245/6/7 family.

• PCMCIA VCC and VPP regulation/switching

• Consumer/personal electronics

• SMPS post-regulator/dc-to-dc modules

• High-efficiency linear power supplies

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

Ultra-Low-Noise Regulator Application

Xxxxx is a trademark of Micrel, Inc

Xxxxx is a registered 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

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Ordering Information

Part Number

Marking

Accuracy

Voltage

Temperature

Package

Standard

Pb-Free

Standard

Pb-Free⁽¹⁾

MIC5205BM5

MIC5205YM5

LBAA

LB25

LB27

LB28

LB2J

LB29

LB30

LB31

LB32

LB33

LB36

LB38

LB40

LB50

KBAA

KB25

KB27

KB28

KB2J

KB29

KB30

KB31

KB32

KB33

KB36

KB38

KB40

KB50

Adj

2.5V

2.7V

2.8V

2.85V

2.9V

3.0V

3.1V

3.2V

3.3V

3.6V

3.8V

4.0V

5.0V

–40°C to +125°C

SOT-23-5

MIC5205-2.5BM5

MIC5205-2.7BM5

MIC5205-2.8BM5

MIC5205-2.85BM5

MIC5205-2.9BM5

MIC5205-3.0BM5

MIC5205-3.1BM5

MIC5205-3.2BM5

MIC5205-3.3BM5

MIC5205-3.6BM5

MIC5205-3.8BM5

MIC5205-4.0BM5

MIC5205-5.0BM5

Note:

MIC5205-2.5YM5

MIC5205-2.7YM5

MIC5205-2.8YM5

MIC5205-2.85YM5

MIC5205-2.9YM5

MIC5205-3.0YM5

MIC5205-3.1YM5

MIC5205-3.2YM5

MIC5205-3.3YM5

MIC5205-3.6YM5

MIC5205-3.8YM5

MIC5205-4.0YM5

MIC5205-5.0YM5

1. Underbar (_) symbol may not be to scale.

Pin Configuration

MIC5205-x.xBM5/YM5

Fixed Voltages

MIC5205BM5/YM5

Adjustable Voltages

Pin Description

MIC5205-x.x

(fixed)

MIC5205

(adjustable)

Pin Name

Pin Function

GND

Supply Input

Ground

Enable/Shudown (Input): CMOS compatible input. Logic high = enable, logic low

or open = shutdown

BYP

ADJ

OUT

Reference Bypass: Connect external 470pF capacitor to GND to reduce output

noise. May be left open.

Adjust (Input): Adjustable regulator feedback input. Connect to resistor voltage

divider.

Regulator Ouput

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Absolute Maximum Ratings⁽¹⁾

Operating Ratings⁽²⁾

Supply Input Voltage (V_IN).............................. –20V to +20V

Enable Input Voltage (V_EN)............................. –20V to +20V

Power Dissipation (P_D).................Internally Limited, Note 3

Lead Temperature (soldering, 5 sec.)........................ 260°C

Junction Temperature (T_J) ........................–40°C to +125°C

Storage Temperature (T_S).........................–65°C to +150°C

Input Voltage (V_IN)......................................... +2.5V to +16V

Enable Input Voltage (V_EN).....................................0V to VIN

Junction Temperature (T_J) ........................–40°C to +125°C

Thermal Resistance, SOT-23-5 (θ_JA)........................ Note 3

Electrical Characteristics⁽⁴⁾

V_IN= V_OUT+ 1V; I_L= 100µA; C_L= 1.0µF; V_EN≥ 2.0V; T_J= 25°C, bold values indicate –40°C ≤ T_J≤ +125°C; unless noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

V_O

Output Voltage Accuracy

variations from specified V_OUT

–1

–2

ppm/°C

∆V_O/∆T

∆V_O/V_O

V_IN– V_O

Output Voltage Temperature

Coefficient

Note 4

Line Regulation

V_IN= V_OUT+ 1V to 16V

I_L= 0.1mA to 150mA, Note 5

0.004

0.02

0.012

0.05

%/V

Load Regulation

0.2

0.5

Dropout Voltage, Note 6

I_L= 100µA

I_L= 50mA

I_L= 100mA

I_L= 150mA

110

140

165

150

230

250

300

275

350

I_GND

Quiescent Current

_EN≤ 0.4V (shutdown)

_EN≤ 0.18V (shutdown)

0.01

µA

Ground Pin Current, Note 7

_EN≥ 2.0V, I_L= 100µA

350

600

1300

125

150

600

µA

I_L= 50mA

I_L= 100mA

I_L= 150mA

800

1000

1500

1900

2500

PSRR

I_LIMIT

Ripple Rejection

Current Limit

Frequency = 100Hz, I_L= 100µA

V_OUT= 0V

Note 8

320

0.05

260

500

∆V_O/∆P_D

e_NO

Thermal Regulation

Output Noise

%/W

I_L= 50mA, C_L= 2.2µF, 470pF from BYP to

GND

nV/ Hz

ENABLE Input

V_IL

Enable Input Logic-Low Voltage regulator shutdown

0.4

0.18

V_IH

Enable Input Logic-High

Voltage

regulator enabled

2.0

I_IL

Enable Input Current

_IL≤ 0.4V

_IL≤ 0.18V

0.01

–1

–2

µA

I_IH

V_IL= 2.0V

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. The maximum allowable power dissipation at any TA (ambient temperature) is PD(max) = (TJ(max) – TA) ⎟ ⎝JA. Exceeding the maximum allowable

power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The ⎝^JAof the MIC5205-xxBM5 (all

versions) is 220°C/W mounted on a PC board (see “Thermal Considerations” section for further details).

4. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

5. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range

from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

6. Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential.

7. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load

current plus the ground pin current.

8, Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line

regulation effects. Specifications are for a 150mA load pulse at VIN = 16V for t = 10ms.

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Typical Characteristics

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Typical Characteristics

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Block Diagrams

Ultra-Low-Noise Fixed Regulator

Ultra-Low-Noise Adjustable Regulator

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

0.33µF for currents below 1mA.

Application Information

No-Load Stability

Enable/Shutdown

The MIC5205 will remain stable and in regulation with no

load (other than the internal voltage divider) unlike many

other voltage regulators. This is especially important in

CMOS RAM keep-alive applications.

Forcing EN (enable/shutdown) high (> 2V) enables the

regulator. EN is compatible with CMOS logic gates.

If the enable/shutdown feature is not required, connect

EN (pin 3) to IN (supply input, pin 1). See Figure 1.

Thermal Considerations

Input Capacitor

The MIC5205 is designed to provide 150mA of

continuous current in a very small package. Maximum

power dissipation can be calculated based on the output

current and the voltage drop across the part. To

determine the maximum power dissipation of the

package, use the junction-to-ambient thermal resistance

of the device and the following basic equation:

A 1µF capacitor should be placed from IN to GND if

there is more than 10 inches of wire between the input

and the ac filter capacitor or if a battery is used as the

input.

Reference Bypass Capacitor

BYP (reference bypass) is connected to the internal

voltage reference. A 470pF capacitor (C_BYP) connected

from BYP to GND quiets this reference, providing a

significant reduction in output noise. CBYP reduces the

regulator phase margin; when using C_BYP, output

capacitors of 2.2µF or greater are generally required to

maintain stability.

(

T_J(max)− T_A

)

P_D(max)

θ_JA

J(max) is the maximum junction temperature of the die,

125°C, and T is the ambient operating temperature. θ_JA

is layout dependent; Table 1 shows examples of

junction-toambient thermal resistance for the MIC5205.

The start-up speed of the MIC5205 is inversely

proportional to the size of the reference bypass

capacitor. Applications requiring a slow ramp-up of

Package

θJA

Recommended

Minimum

θJA Square

Copper Clad

θJC

output voltage should consider larger values of C_BYP

Likewise, if rapid turn-on is necessary, consider omitting

C_BYP

Footprint

SOT-23-5(M5)

220°C/W

170°C/W

130°C/W

Table 1. SOT-23-5 Thermal Resistance

If output noise is not a major concern, omit C_BYPand

leave BYP open.

The actual power dissipation of the regulator circuit can

be determined using the equation:

P_D= (V_IN– V_OUT) I_OUT+ V_INI_GND

Output Capacitor

Substituting PD(max) for PD and solving for the operating

An output capacitor is required between OUT and GND

to prevent oscillation. The minimum size of the output

capacitor is dependent upon whether a reference bypass

capacitor is used. 1.0µF minimum is recommended

when C_BYPis not used (see Figure 2). 2.2µF minimum is

recommended when C_BYPis 470pF (see Figure 1).

Larger values improve the regulator’s transient

response. The output capacitor value may be increased

without limit.

conditions that are critical to the application will give the

maximum operating conditions for the regulator circuit.

For example, when operating the MIC5205-3.3BM5 at

room temperature with a minimum footprint layout, the

maximum input voltage for a set output current can be

determined as follows:

(

125°C − 25°C

)

P_D(max)

P_D(max)= 455mW

220°C/W

The output capacitor should have an ESR (effective

series resistance) of about 5Ω or less and a resonant

frequency above 1MHz. Ultra-low-ESR capacitors can

cause a low amplitude oscillation on the output and/or

underdamped transient response. Most tantalum or

aluminum electrolytic capacitors are adequate; film types

will work, but are more expensive. Since many aluminum

electrolytics have electrolytes that freeze at about –

30°C, solid tantalums are recommended for operation

below –25°C.

The junction-to-ambient thermal resistance for the

minimum footprint is 220°C/W, from Table 1. The

maximum power dissipation must not be exceeded for

proper operation. Using the output voltage of 3.3V and

an output current of 150mA, the maximum input voltage

can be determined. From the Electrical Characteristics

table, the maximum ground current for 150mA output

current is 2500µA or 2.5mA.

455mW = (V_IN– 3.3V) 150mA + VIN·2.5mA

455mW = V_IN×150mA – 495mW + VIN·2.5mA

950mW = V_IN×152.5mA

At lower values of output current, less output

capacitance is required for output stability. The capacitor

can be reduced to 0.47⎧F for current below 10mA or

M9999-020806

(408) 955-1690

February 2006

Micrel

V_IN(max)= 6.23V

MIC5205

resistors set the output voltage based on the following

equation:

Therefore, a 3.3V application at 150mA of output current

can accept a maximum input voltage of 6.2V in a SOT-

23-5 package. For a full discussion of heat sinking and

thermal effects on voltage regulators, refer to the

Regulator Thermals section of Micrel’s Designing with

Low-Dropout Voltage Regulators handbook.

⎛

⎜

⎞

V_OUT= 1.242V ×

+ 1

⎟

⎝

⎠

This equation is correct due to the configuration of the

bandgap reference. The bandgap voltage is relative to

the output, as seen in the block diagram. Traditional

regulators normally have the reference voltage relative

to ground and have a different VOUT equation.

Fixed Regulator Applications

Resistor values are not critical because ADJ (adjust) has

a high input impedance, but for best results use resistors

of 470kΩ or less. A capacitor from ADJ to ground

provides greatly improved noise performance.

Figure 1. Ultra-Low-Noise Fixed Voltage Application

Figure 1 includes a 470pF capacitor for low-noise

operation and shows EN (pin 3) connected to IN (pin 1)

for an application where enable/shutdown is not

required. COUT = 2.2µF minimum.

Figure 3. Ultra-Low-Noise

Adjustable Voltage Application

Figure 3 includes the optional 470pF noise bypass

capacitor from ADJ to GND to reduce output noise.

Figure 2. Low-Noise Fixed Voltage Application

Figure 2 is an example of a low-noise configuration

where C_BYPis not required. COUT = 1µF minimum.

Dual-Supply Operation

When used in dual supply systems where the regulator

load is returned to a negative supply, the output voltage

must be diode clamped to ground.

Adjustable Regulator Applications

The MIC5205BM5 can be adjusted to a specific output

voltage by using two external resistors (Figure 3). The

M9999-020806

(408) 955-1690

February 2006

Micrel

MIC5205

Package Information

SOT-23-5 (M5)

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com

The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its

use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product

can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant

into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A

Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully

indemnify Micrel for any damages resulting from such use or sale.

M9999-020806

(408) 955-1690

February 2006

MIC5205-2.85YM5相关文章

配单直通车

深圳市芯福林电子有限公司服务专线: 13418564337 在线联系:

QQ：2881495808 复制

QQ：308365177 复制

深圳市中利达电子科技有限公司服务专线: 0755-13686833545 在线联系:

QQ：1902134819 复制

QQ：2881689472 复制

柒号芯城电子商务（深圳）有限公司服务专线: 18922803401 在线联系:

QQ：2881677436 复制

QQ：2881620402 复制

北京元坤伟业科技有限公司服务专线: 010-62104931621064316210489162104791 在线联系:

QQ：857273081 复制

QQ：1594462451 复制

首天国际（深圳）科技有限公司服务专线: 0755-82807802/82807803 在线联系:

QQ：528164397 复制

QQ：1318502189 复制

MIC5205-2.85YM5产品参数

型号:	MIC5205-2.85YM5
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	MICROCHIP TECHNOLOGY INC
包装说明：	LEAD FREE, SOT-23, 5 PIN
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	5.36
Is Samacsys：	N
最大回动电压 1：	0.35 V
最大输入电压：	16 V
最小输入电压：	2.5 V
JESD-30 代码：	R-PDSO-G5
JESD-609代码：	e4
长度：	2.91 mm
湿度敏感等级：	1
功能数量：	1
端子数量：	5
工作温度TJ-Max：	125 °C
工作温度TJ-Min：	-40 °C
最大输出电流 1：	0.15 A
最大输出电压 1：	2.907 V
最小输出电压 1：	2.793 V
标称输出电压 1：	2.85 V
封装主体材料：	PLASTIC/EPOXY
封装代码：	LSSOP
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：	1.45 mm
表面贴装：	YES
端子面层：	NICKEL PALLADIUM GOLD
端子形式：	GULL WING
端子节距：	0.95 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	40
宽度：	1.625 mm
Base Number Matches：	1

电子百科

产品导航

产品型号MIC5205-2.85YM5的概述

产品型号MIC5205-2.85YM5的Datasheet PDF文件预览

MIC5205-2.85YM5相关产品..

MIC5205-2.85YM5相关文章

IC37:专业IC行业平台