Datasheet > MAX8887EZKXY+T

MAX8887EZKXY+T

更新时间： 2024-01-06 16:35:09

品牌	Logo	应用领域
美信 - MAXIM		稳压器
页数	文件大小	规格书
9页	195K
描述
Low-Dropout, 300mA Linear Regulators in SOT23

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技术参数
数据手册

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MAX8887EZKXY+T 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.6	Base Number Matches：	1

MAX8887EZKXY+T 数据手册

Low-Dropout, 300mA Linear Regulators in SOT23

7/MAX8

SHDN

MOS DRIVER

ERROR

AMP

WITH I

LIMIT

SHUTDOWN

LOGIC

OUT

POK

MAX8888

POK

1.25V

REF

95%

REF

THERMAL

SENSOR

GND

Figure 1. Functional Diagram

stability and optimum transient response. Surface-mount

ceramic capacitors have very low ESR and are com-

MAXIMUM OUTPUT CURRENT

vs. INPUT VOLTAGE

(POWER DISSIPATION LIMIT)

monly available in values up to 10µF. Connect C and

as close to the MAX8887/MAX8888 as possible to

OUT

400

minimize the impact of PC board trace inductance.

T = +85°C

T = +70°C

Noise, PSRR, and Transient Response

The MAX8887/MAX8888 are designed to operate with

low dropout voltages and low quiescent currents in bat-

tery-powered systems while still maintaining excellent

noise, transient response, and AC rejection. See the

Typical Operating Characteristics for a plot of power-

supply rejection ratio (PSRR) versus 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.

MAXIMUM RECOMMENDED OUTPUT CURRENT

300

200

100

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Input-Output (Dropout) Voltage

A regulator’s minimum input-to-output voltage differen-

tial (dropout voltage) determines the lowest usable sup-

ply voltage at which the output is regulated. In

battery-powered systems, this determines the useful

end-of-life battery voltage. The MAX8887/MAX8888 use

a p-channel MOSFET pass transistor. Its dropout volt-

age is a function of drain-to-source on-resistance

(V - V ) (V)

OUT

Figure 2. Power Operating Regions: Maximum Output Current

vs. Input Voltage

) multiplied by the load current (see the

DS(ON)

Typical Operating Characteristics).

= V - V = R

OUT

DROPOUT

OUT

DS(ON)

_______________________________________________________________________________________

1...4 5 678 9

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