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1、Description

PL59011 is a high voltage PWM controller designed for high performance synchronous Buck DC/DC applications with input voltages up to 100V. PL59011 drives a pair of external N−MOSFETs. The switching frequency is programmable from 50 kHz up to 500 kHz allowing the flexibility to tune for efficiency and size. The output voltage can be precisely regulated using the internally 1.2 V reference voltage for low voltage applications. Protection features include user programmable under voltage lockout, over voltage lockout and over current protection. The supply current drops below 10µA in shutdown mode. PL59011 is a good choice for car infotainment application, telecom bus converter, etc. 

2、Features

 12V to 100V wide operating input range

 Adjustable Frequency from 50kHz to 500kHz Operation

 Precision Reference Voltage (1.2 V)

 Programmable Soft−Start with Pre-biased Load Capability

 Programmable EN Off Delay Function

 Programmable Over-Load Protection with 0.2s blank timer and Hiccup

 Programmable Cycle-by-Cycle Current Limiting Protection

 Programmable Input Under-Voltage Lockout Protection with Latch

 Programmable Input Over-Voltage Protection with Latch

 Output Over-Voltage Protection

 Over-Temperature Protection

 ETSSOP20 packages

3、 Applications

 48 V Non−Isolated DC−DC Converter

 Car applications

 Telecom Bus Converters

 General purpose

 USB Type-C Power Delivery

 Industrial DC-DC Motor Drivers