深圳市大东微电子有限公司

大东微电子有限公司多年专注于为广大的LED电源厂家和照明工厂提供配套的产品和方案。代理和经销的产品皆为进口全新原装、具有高性价比优势，且提供相应的产品技术支持。深圳市大东微电子有限公司实力雄厚，重信用、守合同、保证所供产品质量原装，以多品种经营特色和薄利多销的原则，服务于新老客户并且赢得了广大客户的信任。 我们郑重承诺只做原装

描述

PL94053 is a synchronous 4-switch Buck-Boost controller capable of regulating the output voltage at above or below the input voltage. PL94053 operates over a wide input voltage range of 3.6 V to 32 V (36 V maximum) to support a variety of applications.  Integrated two 9mΩ power MOSFETs. 
PL94053 employs Constant ON time control in buck, boost and buck-boost operation modes for superior load and line regulation. The switching frequency could be set to 150kHz, 300kHz, 600kHz or 1200kHz based on different resistor value between FREQ pin and GND pin. The device also features a programmable soft-start function and offers all kinds of protection features including cycle-by-cycle current limiting, input under voltage lockout (UVLO), output over voltage protection (OVP), input Over Voltage Protection, thermal shutdown and output short protection etc.

 VADJ, IADJ pins are used to program output VBUS voltage and output current limit, provides voltage control loop, constant current loop, thermal regulation loop, temperature sensing, which makes PL94053 an excellent option for USB Power Delivery (PD) application.

特性

? Buck-Boost Controller for Step-Up/Step-Down DC/DC Conversion
? Dynamical programming of Output current and Output voltage using PWM signal or analog signal
? 2V to 32 V wide output range
? Comprehensive protection features including Output Short Protection (OSP), Cycle-by-Cycle input and output Peak Current Limit, thermal regulation,thermal shutdown, input UVLO, output OVP etc.
? Adjustable Switching Frequency using resistor
? Frequency dithering for good EMI performance
? Integrated 2-A MOSFET Gate Drivers
? Integrated two 9mΩ power MOSFETs
? Input or Output Average Current Limiting with stable CC loop
? 5V/55mA low Iq LDO to power system MCU
? Available in QFN5x5-32 Package

应用

? Automotive Start-Stop Systems
? HUB Power
? Industrial PC Power Supplies
? USB Power Delivery
? Car charger