MAX8874R|MAX8874S|MAX8874T - 低压差、120mA线性稳压器

MAX8874R|MAX8874S|MAX8874T - 低压差、120mA线性稳压器 - 美信芯片 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82µA supply current to remain independent of load, making these devices ideal for battery-operated portable equipment such as cellular phones and cordless phones.

The devices feature Dual Mode™ operation: their output voltage is preset (at 3.15V for the T versions, 2.84V for the S versions, or 2.80V for the R versions) or can be adjusted with an external resistor divider. Total error on the output is ±3.5%. Output voltages are set on the low side of popular ranges so that power drain is minimized for longer battery life. Other features include low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8874 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 5-pin SOT23 package.

For dual versions, refer to the MAX8865/MAX8866 data sheet. For low-noise versions with 30µVRMS output noise, refer to the MAX8877/MAX8878.

关键特性

以下关键特性由Maxim美信半导体提供：

LP2980 Pin-Compatible SOT23 Package

Low, 55mV Dropout Voltage at 50mA IOUT (130mV at 120mA)

Low, 73µA No-Load Supply Current

Low, 82µA Operating Supply Current (even in dropout)

Miniature External Components

Thermal Overload Protection

Output Current Limit

Reverse Battery Protection

Dual Mode Operation: Fixed or Adjustable (1.25V to 6.5V) Output

Low-Power Shutdown

热门应用

音频系统

无绳电话

电子规划器

手持式仪表(PDA、掌上电脑)

调制解调器

掌上电脑

PCMCIA卡

PCS电话

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