供应微源半导体 LP3201-18B5F 1A降压转换器

微源半导体 LP3201-18B5F SOT23-5 1.5MHz，1A降压转换器

General Description

The LP3201-18B5F is a 1.5MHz constant frequency current mode PWM step-down converter. integrates main switch and synchronous rectifier switch. The LP3201 integrates two operation modes, PWM control and PFM mode switching control, which allows a high efficiency over the wider range of the load. It is ideal for portable equipment which requires very high current up to 1A from single-cell Lithium-ion batteries. The LP3201 also can run at 100.00% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noisy sensitive applications.

The LP3201-18B5F can supply up to 1A output load current from an input voltage 2.5V to 5.5V and the output voltage can be regulated as low as 0.61V. The high switching frequency minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation.

Features

◆ Up to 96% Efficiency

◆ Input Voltage Range: 2.5V to 5.5V

◆ Output Voltage Range: 0.61V to V IN

◆ 1A Output Current

◆ 100% Duty Cycle in Dropout

◆ Low Shutdown Current:<1uA

◆ 1.5MHz Switching Frequency

◆ Soft-Start Function

◆ Short Circuit Protection

◆ Thermal Fault Protection

◆ SOT23-5 / TSOT23-5 Package

◆ RoHS Compliant and 100% Lead (Pb)-Free

Applications

◆ Portable Instruments

◆ DSP Core Supplies

◆ Cellular Phone and Smart mobile phone

◆ PDA

◆ GPS Applications

LP3201-18B5F产品规格书（部分）