供应LP3220S-12B5F 微源同步降压转换器

微源半导体 LP3220S-12B5F SOT23-5 1.5MHz，1.0A降压转换器

General Description

The LP3220S-12B5F is a 1.5MHz constant frequency current mode PWM step-down converter. It is ideal for portable equipment which requires very high current up to 1.0A from single-cell Lithium-ion batteries while still achieving over 94% efficiency during peak load conditions. The LP3220 also can run at 100％ 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 LP3220 can supply up to 1.0A output load current from at VIN = 3V and has an input voltage 2.5V to 5.5V and the output voltage can be regulated as low as 0.6V. 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.

The LP3220 is available with adjustable (0.61V to VIN) output voltage. The device is available in a Pb-free, SOT23-5 package and is rated over the temperature range of -40℃ to +85℃.

Feature

◆ Input Voltage Range: 2.2V to 5.5V

◆ Output Voltage Range: 0.61V to VIN

◆ 1.0A Output Current

◆ High Efficiency: Up to 94%

◆ 100％ Duty Cycle in Dropout

◆ Low Shutdown Current:<1uA

◆ 1.5MHz Switching Frequency

◆ Soft-star Function

◆ Short Circuit Protection

◆ Thermal Fault Protection

◆ SOT23-5Package

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

Applications

◆ Portable Instruments

◆ DSP Core Supplies

◆ Cellular Phone and Smart mobile phone

◆ PDA

◆ GPS Applications

微源LP3220系列

LP3220AB5F          SOT23-5      3K/REEL  

LP3220-12B5F       SOT23-5      3K/REEL   

LP3220-18B5F       SOT23-5       3K/REEL   

LP3220-33B5F       SOT23-5       3K/REEL   

LP3220SAB5F        SOT23-5       3K/REEL   

LP3220S-12B5F     SOT23-5       3K/REEL   

LP3220S-18B5F     SOT23-5       3K/REEL   

LP3220S-33B5F     SOT23-5       3K/REEL   

LP3220S-12B5F规格书（部分）