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产品型号MAX8516EUB+的概述

芯片MAX8516EUB+的概述 MAX8516EUB+是一款高性能的线性稳压器，专为满足各种电子应用中的电源需求而设计。此芯片由Maxim Integrated（现为Analog Devices的一部分）生产，具有多种优良特性，如低静态电流、高输入电压范围、以及高度集成的解决方案，适用于苛刻的电源管理需求。这款芯片尤其适合移动设备、便携式电子产品以及其他低功耗设备，可为其电路提供稳定、可靠的电源供应。 MAX8516EUB+的一个显著特征是其高达500mA的输出电流能力，能够在多种负载条件下保持稳定的输出电压。此外，芯片内部集成了多个保护功能，如过热保护（OTP）和短路保护（SCP），确保在不利的工作环境下设备的安全性和稳定性。整体而言，MAX8516EUB+是一个兼具性能与安全性的理想选择。芯片MAX8516EUB+的详细参数以下是MAX8516EUB+的一些关键技术参数： -...

产品型号MAX8516EUB+的Datasheet PDF文件预览

19-3188; Rev 2; 9/09

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

67/MAX518

General Description

Features

The MAX8516/MAX8517/MAX8518 low-dropout linear

regulators operate from input voltages as low as 1.425V

and are able to deliver up to 1A of continuous output

current with a maximum dropout voltage of only 200mV.

♦ 1.425V to 3.6V Input Voltage Range

♦ Guaranteed 200mV Dropout at 1A Output Current

♦

1.4ꢀ Output Aꢁꢁuraꢁc Oꢂer ꢃoadꢄ ꢃLneꢄ and

Temperature (0°C to +85°C)ꢄ 0.6ꢀ InLtLal Aꢁꢁuraꢁc

The output voltage can be set from 0.5V to (V - 0.2V)

♦ CompatLble wLth CeramLꢁ CapaꢁLtors

♦ Fast TransLent Response

and is 1.4% accurate over load and line variations, from

0°C to +85°C.

These regulators use small, 1µF ceramic input capaci-

tors and 4.7µF ceramic output capacitors to deliver 1A

output current. High bandwidth provides excellent tran-

sient response and limits the output voltage deviation to

45mV for a 20mA to 1A load step, with only a 4.7µF

ceramic output capacitor, and the voltage deviations can

be reduced further by increasing the output capacitor.

♦ 320µA OperatLng Supplc Current

♦ <25µA Shutdown Supplc Current

♦ Short-CLrꢁuLt ProteꢁtLon

♦ Thermal-Oꢂerload ProteꢁtLon

♦ Soft-Start ꢃLmLts Inrush Current

Ordering Information

Designed with an internal p-channel MOSFET pass

transistor, the MAX8516/MAX8517/MAX8518 feature

low 340µA (typ) supply current during dropout condi-

tions. Soft-start reduces inrush current. Other features

include a logic-controlled shutdown mode, short-circuit

protection, and thermal-overload protection.

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

10 µMAX

MAX8516EUB

MAX8517EUB

MAX8517EUB/V

MAX8518EUB

10 µMAX

The MAX8517 features a power-OK (POK) output that

transitions high when the regulator output is within

10% of its nominal output voltage. The MAX8518

features a 150ms power-on reset output.

The parts are packaged in a 10-pin µMAX^®package that

includes an exposed pad for optimal power dissipation.

/V Denotes an automotive qualified part.

Typical Operating Circuit

INPUT

OUTPUT

1.425V TO 3.6V

0.5V TO (V - 0.2V), 1A

IN_

OUT_

1µF

Applications

MAX8516

MAX8517

MAX8518

Servers

Post Regulators

Notebooks

PDAs

POWER-ON RESET

POWER-OK

4.7µF

Storage

POR (MAX8518)

POK (MAX8517)

Networking

Base Stations

Optical Modules

ATE

GND

OFF

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Pin Configurations

TOP VIEW

10 N.C.

OUT

MAX8516

MAX8517

MAX8518

N.C.

POK

N.C.

POR

GND

µMAX

________________________________________________________________ MaxLm Integrated Produꢁts

For prLꢁLngꢄ delLꢂercꢄ and orderLng LnformatLonꢄ please ꢁontaꢁt MaxLm DLreꢁt at 1-888-629-4642ꢄ

or ꢂLsLt MaxLm’s websLte at www.maxLm-Lꢁ.ꢁom

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

ABSOꢃUTE MAXIMUM RATINGS

IN, EN, POK (MAX8517), POR (MAX8518),

Operating Temperature Range ...........................-40°C to +85°C

FB to GND .........................................................-0.3V to +4.0V

OUT to GND ..................................................-0.3V to (IN + 0.3V)

Output Short-Circuit Duration.....................................Continuous

Continuous Power Dissipation

Junction Temperature......................................................+150°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+240°C

(T = +70°C, EP soldered to PCB)

10-Pin µMAX (derate 10.3mW/°C above +70°C).........824mW

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

EꢃECTRICAꢃ CHARACTERISTICS

(Circuit of Figure 1. V = +1.8V, V

= +1.5V, EN = IN, I

= 1mA, T = -40°C to +85°C, unless otherwise noted.) (Note 1)

OUT A

OUT

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

Input Undervoltage Lockout

OUT

1.425

1.32

3.600

1.38

rising, 70mV hysteresis

1.35

Output Voltage Range

Load Regulation

Line Regulation

0.5

-0.15

1.6

3.4

= 1mA to 1A

0.1

%/A

%/V

OUT

= 1.425V to 3.6V, V

= 1.225V, I = 1mA

OUT

+0.15

200

2.4

OUT

Dropout Voltage (V - V

)

= 1.425V, I

= 1A, V = 480mV

100

OUT

Current Limit

= 3.6V, V

= 3V, V = 480mV

OUT

Output Shutdown Leakage

= 0V, V = 0V

0.25

µA

67/MAX518

= 10mA, T = +85°C

497

493

500

503

507

OUT

FB Threshold Accuracy

µA

= 1.225V to 3V, V = V

= 1mA to 1A

+ 0.2V to 3.6V,

OUT

FB Input Bias Current

= 0.5V, V = 3.6V

0.001

GND

= 3.6V, V

= 3V, I

= 100mA

320

340

0.25

OUT

GND Supply Current

µA

Dropout, V = 3.6V, V = 480mV

600

GND Shutdown Current

= 3.6V, EN = GND

POK (MAX8517 ONꢃY)

FB high

FB low

540

440

550

450

560

460

200

moving out of regulation,

POK Threshold

= 10mV, IN = 1.425V to 3.6V

HYS

POK Output Voltage Low

POK Output Current High

POK Fault Delay Time

= 0.4V or 0.6V, I

= 1mA

µA

µs

POK

= 3.6V

0.001

POK

From FB to POK

100

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

67/MAX518

EꢃECTRICAꢃ CHARACTERISTICS (ꢁontLnued)

(Circuit of Figure 1. V = +1.8V, V

= +1.5V, EN = IN, I = 1mA, T = -40°C to +85°C, unless otherwise noted.) (Note 1)

OUT A

OUT

PARAMETER

POR (MAX8518 ONꢃY)

POR Reset Threshold

POR Output Voltage Low

POR Output Current High

POR Rising Delay Time

CONDITIONS

MIN

TYP

MAX

UNITS

falling, V

= 10mV, V = 1.425V to 3.6V

440

450

460

200

µA

HYS

= 0.4V or 0.6V, I

= 1mA

POR

= 3.6V

0.001

150

POR

From FB to POR

105

210

EN rising

EN falling

1.2

Enable Input Threshold

= 1.425V to 3.6V

= 0 or 3.6V

0.4

-1

Enable Input Bias Current

µA

THERMAꢃ SHUTDOWN

T rising

+165

+150

Thermal-Shutdown Threshold

Output on or off

°C

T falling

OUTPUT TRANSIENT

Load Transient

= 20mA to 1A to 20mA, t

= t = 1µs

FALL

OUT

RISE

Line Transient

δV = 0.5V, t

= t

= 5µs

RISE

FALL

Note 1: Specifications to T = -40°C are guaranteed by design, not production tested.

Note 2: Measurements at high current are pulse tested, such that the junction temperature is ambient temperature. Minimum supply

voltage for output accuracy must be at least 1.425V.

Typical Operating Characteristics

(Circuit of Figure 1, V = +1.8V, V

= +1.5V, I

= 1A, C

= 4.7µF, C = 1µF, T = +25°C.)

OUT IN A

OUT

OUTPUT VOLTAGE

vs. INPUT VOLTAGE

OUTPUT VOLTAGE

vs. LOAD CURRENT

GROUND CURRENT

vs. INPUT VOLTAGE

1.502

500

400

300

200

100

1.60

= -40°C TO +85°C

= +85°C

= 1A

LOAD

1.500

1.498

1.496

1.494

1.492

1.490

1.55

1.50

1.45

1.40

1.35

1.30

= +25°C

= 0.5A

LOAD

= -40°C

= 0A

LOAD

200

400

600

800 1000 1200

0.6

1.2

1.8

2.4

3.0

3.6

0.6

1.2

1.8

2.4

3.0

3.6

LOAD CURRENT (mA)

INPUT VOLTAGE (V)

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V = +1.8V, V

= +1.5V, I

= 1A, C

= 4.7µF, C = 1µF, T = +25°C.)

OUT

GROUND CURRENT

vs. LOAD CURRENT

DROPOUT VOLTAGE

vs. LOAD CURRENT

375

350

325

300

275

250

125

= +85°C

100

= +25°C

= -40°C

200

400

600

800 1000 1200

200

400

600

800

1000

LOAD CURRENT (mA)

LINE INPUT TRANSIENT

LOAD-TRANSIENT RESPONSE

(I = 0.1A TO 1A)

(V = +1.8V TO +2.5V, I

= 1A)

LOAD

MAX8516/17/18 toc06

MAX8516/17/18 toc07

OUT

AC-COUPLED

20mV/div

AC-COUPLED

50mV/div

67/MAX518

LOAD

AC-COUPLED

0.5V/div

1A/div

= 220µF ELECTROLYTIC

CAP CLOSE TO IN

100µs/div

40µs/div

PSRR vs. FREQUENCY (MAX8516)

SHUTDOWN RESPONSE

MAX8516/17/18 toc08

OUT

1V/div

1A/div

2V/div

= 100mA

0.1

LOAD

0.01

100

1000

100µs/div

FREQUENCY (kHz)

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

67/MAX518

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V = +1.8V, V

= +1.5V, I

= 1A, C

= 4.7µF, C = 1µF, T = +25°C.)

OUT

FB VOLTAGE vs. TEMPERATURE

OUTPUT RIPPLE VOLTAGE

MAX8516/17/18 toc11

502

501

500

499

498

OUT

AC-COUPLED

1mV/div

= 10mA

LOAD

-40

-15

100µs/div

TEMPERATURE (°C)

OVERCURRENT THRESHOLD

vs. TEMPERATURE

SHORT-CIRCUIT CURRENT

MAX8516/17/18 toc13

1.95

1.90

1.85

1.80

1.75

OUT

1V/div

OUT

2A/div

100µs/div

-40

-15

TEMPERATURE (°C)

CASE TEMPERATURE

vs. LOAD CURRENT

= 2.5V; T = +25°C

200

400

600

800

1000

LOAD CURRENT (mA)

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

Pin Description

NAME

FUNCTION

MAX8516

MAX8517

MAX8518

Enable Input. Set low to place the device in low-current shutdown mode. Set

high for normal operation.

Regulator Input. V can range from +1.425V to +3.6V. Bypass with a 1µF or

higher ceramic capacitor to GND.

2, 3

No Connection. Pin 10 is internally pulled down to GND with a 10kΩ resistor.

Leave unconnected.

4, 5, 10

5, 10

4, 10

N.C.

GND

Ground

Feedback Pin. Connect to output through a voltage-divider to set the output.

Regulator Output. Bypass with a 4.7µF ceramic capacitor to GND (a smaller

8, 9

—

8, 9

—

OUT

POK

capacitor can be used if maximum load is less than 1A, i.e., C

(max) x (1µF/200mA).

= I

OUT

Power-OK Output (MAX8517 Only). Open-drain output. Connect to a positive

supply with a pullup resistor. If not used, leave pin unconnected. See the

Detailed Description.

Power-On Reset Output. Open-drain output. Connect to a positive supply with

a pullup resistor. If not used, leave pin unconnected (see the Detailed

Description for more details).

—

POR

Exposed Pad on the Underside of the Package. Solder to the ground plane for

proper heat dissipation.

—

Functional Diagram

THRESHOLD

OVERTHERMAL

PROTECTION

UNDERVOLTAGE

LOCKOUT

0.50V

0.55V

0.45V

ERROR AMP

MOS DRIVER

WITH I

WITH

REF

LIMIT

SOFT-START

OVERTHERMAL

PROTECTION

OUT

MAX8516

MAX8517

MAX8518

POK

(MAX8517 ONLY)

POR

(MAX8518 ONLY)

GND

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

67/MAX518

Output Voltage Selection

Detailed Description

The MAX8516/MAX8517/MAX8518 feature an

adjustable output voltage from 0.5V to 3.4V, using two

external resistors connected as a voltage-divider to FB

as shown in Figure 1. The output voltage is set by the

following equation:

The MAX8516/MAX8517/MAX8518 are low-input, low-

dropout, PMOS regulators capable of delivering up to

1A of output current with as little as 200mV of headroom

from input to output. The PMOS output stage can be dri-

ven from input voltages down to +1.425V without sacri-

ficing stability or transient performance. Since these

regulators have a PMOS output device, supply current

is not a significant function of load or input headroom.

⎛

⎞

= V

1 +

⎜

⎝

⎟

⎠

OUT

Internal p-Channel Pass Transistor

The MAX8516/MAX8517/MAX8518 feature a 100mΩ (typ)

p-channel MOSFET pass transistor. Unlike similar

designs using pnp pass transistors, p-channel MOSFETs

require no base drive, which reduces quiescent current.

pnp-based regulators also waste considerable current in

dropout when the pass transistor saturates and use high

base-drive currents under large loads. The MAX8516/

MAX8517/MAX8518 do not suffer from these problems

and consume only 340µA (typ) of quiescent current

under heavy loads, as well as in dropout.

where typically V = 0.5V. Choose R2 ≤ 5kΩ to opti-

mize quiescent current, accuracy, and high-frequency

power-supply rejection. To simplify resistor selection:

⎛

⎞

OUT

R1 = R2

− 1

⎟

⎜

⎝

⎠

Soft-Start

Inherent soft-start limits inrush current. Peak inrush cur-

rent is dependent on the value of C

culated as follows:

and can be cal-

OUT

Short-Circuit/Thermal Fault Protection

The MAX8516/MAX8517/MAX8518 are fully protected

from a short circuit at the output through current-limiting

and thermal-overload circuitry. In the fault condition

when the output is shorted to ground, the output current

is limited to 2A. Under these conditions, the part quickly

heats up. When the junction temperature reaches

+165°C, the thermal-overload circuitry turns off the

output, allowing the part to cool down. When the junction

temperature cools to +150°C, the output turns back on

and tries to reestablish regulation. Current limiting and

thermal protection continue until the fault is removed. For

continuous operation, do not exceed the absolute maxi-

(µF)

⎛

⎞

OUT

= I

⎜

⎝

⎟

⎠

INRUSH

LOAD

Shutdown Mode

The MAX8516/MAX8517/MAX8518 include an enable

input. To shut down the device, pull EN to GND. For

normal operation, connect the EN to IN. During shut-

down, an internal 10kΩ resistor pulls down the output.

Power-OK (MAX8517 Only)

The MAX8517 features a power-OK (POK) output to

indicate the status of the output. POK remains high

when the regulator output is within 10% of its nominal

output voltage. If the output voltage falls or rises out-

side this range, POK transitions low. This open-drain

output requires an external pullup resistor to IN. An

internal delay circuit prevents POK from switching for

50µs (typ) after the trip threshold is initially reached. If

the part is in shutdown mode, POK is low.

mum junction-temperature rating of T = +150°C.

ADJUSTABLE

OUTPUT

+1.425V TO +3.6V

OUT

1µF

MAX8516

MAX8517

MAX8518

Power-On Reset (MAX8518 Only)

The MAX8518 features a power-on reset (POR) output

that transitions high 140ms (typ) after the output has

risen above 90% of its final value. This open-drain out-

put requires an external pullup resistor to IN. If the part

is in shutdown mode, falls below 90% of the nominal

output voltage, or experiences a short-circuit or thermal

fault, POR immediately transitions low.

4.7µF

100kΩ*

POK (MAX8517) OR

POR (MAX8518)

ENABLE

GND

SHUTDOWN

*FOR MAX8517 AND MAX8518

Figure 1. Typical Application Circuit

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

Operating Region and Power Dissipation

The maximum power dissipation depends on the ther-

mal resistance of the IC package and circuit board, the

temperature difference between the die junction and

ambient air, and the rate of airflow. The power dissipat-

Noise, PSRR, and Transient Response

The MAX8516/MAX8517/MAX8518 are designed to

operate with low dropout voltages and low quiescent

currents while still maintaining good noise, transient

response, and AC rejection (see the Typical Operating

Characteristics for a plot of Power-Supply Rejection

Ratio (PSRR) vs. Frequency). When operating from

noisy sources, improved supply-noise rejection and

transient response can be achieved by increasing the

values of the input and output bypass capacitors and

through passive filtering techniques. The MAX8516/

MAX8517/MAX8518 load-transient response graphs

(see the Typical Operating Characteristics) show two

components of the output response: a DC shift from the

output impedance due to the load current change, and

the transient response. A typical transient overshoot for

a step change in the load current from 20mA to 1A is

45mV. Use larger output ceramic capacitors greater

than 4.7µF up to 50µF to attenuate the overshoot.

ed in the device is P = I

✕ (V - V

OUT

The package features an exposed thermal pad on its

underside. This pad lowers the thermal resistance of

the package by providing a direct heat conduction

path from the die to the PCB.

Additionally, the ground pins (GND) perform the dual

function of providing an electrical connection to system

ground and channeling heat away. Connect the

exposed backside pad and GND to the system ground

using a large pad or ground plane, or multiple vias to

the ground plane layer.

Applications Information

Capacitor Selection and

Regulator Stability

Capacitors are required at the MAX8516/MAX8517/

MAX8518 inputs and outputs for stable operation over the

full temperature range and with load currents up to 1A.

Connect a 1µF capacitor between IN and ground and a

4.7µF capacitor with low equivalent series resistance

(ESR) between OUT and ground for 1A output current.

The input capacitor (C ) lowers the source impedance of

67/MAX518

the input supply. If input-supply source impedance is

high, place a larger input capacitor close to IN to prevent

sagging due to load transients. Smaller output capac-

itors can be used for output currents less than 1A.

Calculate C

as follows:

OUT

= I

× (1µF 200mA)

OUT

OUT(MAX)

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

67/MAX518

Package Information

Chip Information

For the latest package outline information and land patterns, go

to www.maxLm-Lꢁ.ꢁom/paꢁkages. Note that a “+”, “#”, or “-” in

the package code indicates RoHS status only. Package draw-

ings may show a different suffix character, but the drawing per-

tains to the package regardless of RoHS status.

TRANSISTOR COUNT: 2849

PROCESS: BiCMOS

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

10 µMAX

U10E-3

21-0109

_______________________________________________________________________________________

1.425V to 3.6V Input, 1A,

0.2V Dropout LDO Regulators

Revision History

REVISION

NUMBER

REVISION

DATE

PAGES

CHANGED

DESCRIPTION

2/04

4/04

9/09

Initial release

—

1–3, 6

Removed future product asterisks for MAX8517/MAX8518. Updated

Electrical Characteristics and Pin Description.

Added MAX8517 automotive package to Ordering Information.

67/MAX518

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Maxim is a registered trademark of Maxim Integrated Products, Inc.

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MAX8516EUB+产品参数

型号:	MAX8516EUB+
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	MAXIM INTEGRATED PRODUCTS INC
零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP10,.19,20
针数：	10
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
Factory Lead Time：	6 weeks
风险等级：	0.88
可调性：	ADJUSTABLE
最大回动电压 1：	0.2 V
标称回动电压 1：	0.1 V
JESD-30 代码：	S-PDSO-G10
JESD-609代码：	e3
长度：	3 mm
最大电网调整率 (%/V)：	0.15
湿度敏感等级：	1
功能数量：	1
输出次数：	1
端子数量：	10
工作温度TJ-Max：	150 °C
最高工作温度：	85 °C
最低工作温度：	-40 °C
最大输出电流 1：	1 A
最大输出电压 1：	3.4 V
最小输出电压 1：	0.5 V
封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP
封装等效代码：	TSSOP10,.19,20
封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified
调节器类型：	ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：	1.1 mm
子类别：	Other Regulators
表面贴装：	YES
技术：	BICMOS
端子面层：	Matte Tin (Sn)
端子形式：	GULL WING
端子节距：	0.5 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm
Base Number Matches：	1

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