深圳市科瑞芯电子有限公司

LPSemi/微源半导体  LP3994B SOT89-3 宽输入范围高性能LDO

General description

The LP3994B is a high-performance low dropout（LDO）voltage regulator with wide input voltage range and low quiescent current (1.5 μ A typical). The device is suitable for a multitude of applications which require a regulated supply of up to 150mA load current. The device uses an advanced CMOS process and a PMOSFET to achieve fast start-up, high output voltage accuracy and excellent transient response performance.

The LP3994B comes in standard fixed output voltage3.3V and 5.0V. The device is stable with a 1.0μF~10μF ceramic output capacitor, The device is protected from short circuit by the current limit function and from over-heating by thermal overload protection. 

The LP3994B is offered in SOT23-3，SOT23-5，SOT89-3 package.

Features

◆ Wide Input Voltage Range: 3.6V to 40V

◆ Maximum Load Current Up to 150mA

◆ Low Quiescent Current 1.5μA typical

◆ Low Dropout Voltage:

550mV @ 100mA Load

850mV @ 150mA Load

◆ Output Voltage Tolerance±1.5% @ 1mA Load

◆ Stable with Minimum 1.0μF Output Capacitance

◆ Short Circuit Current Limit 120mA

◆ Internal Thermal Overload Protection

◆ Excellent Load/Line Transient Response

◆ Line Regulation: 0.01%/V typical

◆ Load Regulation: 0.005%/mA typical

◆ ESD protections

◆ Package: SOT23-3, SOT23-5, SOT89-3

◆ RoHS Compliant and100％ Lead (Pb)-Free

Application

◆ Digital cameras

◆ Audio devices

◆ Portable and battery-powered equipment

◆ Post dc-to-dc regulation

◆ Post regulation

产品规格书（部分）