1 Features
12V to 100V wide operating input range
3A continuous output current capability
Integrated 120V, 70mΩ high side and 120V, 70mΩlow side power MOSFET switches
Adjustable Frequency from 50kHz to500kHzOperation
Precision Reference Voltage (1.2 V)
Programmable Soft−Start with Pre-biased LoadCapability
Programmable EN Off Delay Function
Programmable Over-Load Protection with 0.2Sblank timer and Hiccup
Programmable Cycle-by-Cycle Current LimitingProtection
Programmable Input Under-Voltage LockoutProtection with Latch
Programmable Input Over-Voltage Protection withLatch
Output Over-Voltage Protection
Over-Temperature Protection
QFN5*5mm-32
2 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
3 Description
PL89032 is a high voltage Buck Control designed forhighperformance synchronous Buck DC/DC applicationswith inputvoltages up to 100V.
PL89032 integrates a high efficiency synchronousstep-down switching regulator, which includes a 120V,70mΩ high side and a 120V, 70mΩ low side MOSFETs toprovide 3A continuous load current over12V to 100V wideoperating input voltage.
PL89032 switching frequency is programmable from50kHz up to 500 kHz allowing the flexibility to tune forefficiencyand size. The output voltage can bepreciselyregulated using the internally 1.2 V referencevoltage forlow voltage applications.Protection features include userprogrammableundervoltage lockout, over voltage lockoutand over currentprotection.The supply current drops below 10µA inshutdown mode. PL89032 is a good choice for carinfotainment application, telecom bus converter, etc.
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