Datasheet HL8021 (HALO)

Product Brief HL8021 Low IQ Synchronous Boost Controller with Spread Spectrum Overview Features
The HL8021 is a high-performance boost • Synchronous boost operation with high controller that drives an N-channel MOSFET efficiency synchronous boost power stage, operating from • Wide supply voltage ranges from 4.5V to a wide input supply range from 4.5V to 40V. 40V When the controller is biased from the output • Output voltage up to 40V voltage, the controller can operate from an input • Low operating IQ with 14µA supply as low as 1V after startup. • Low shutdown IQ with 1.2µA • 100% Duty cycle pass through mode for The switching frequency can be programmed by synchronous MOSFET a resistor on FREQ pin. A constant frequency • Programmable switching frequency from current control architecture allows device to 100kHz to 3MHz synchronize to an external clock on SYNC/SPS • Sync to external clock from 100kHz to 3MHz pin. • Spread spectrum for low EMI • Selectable continuous inductor current, burst To optimize light load efficiency, the device or pulse skipping mode at light loads provides three light load operation modes—burst • Thermal y enhanced 16-pin 3mm x 3mm mode, pulse skipping mode, and continuous QFN inductor current mode. These modes are • AEC-Q100 grade 1 qualified controlled by MODE pin. The HL8021 features spread spectrum operation
Applications
to reduce the peaks of the radiated and conducted EMI noise and make it easier for • Automotive system to comply with EMI standards. This • Industrial operation mode can be enabled by SYNC/SPS • Telecommunication pin tied to VCC. A separate supply pin SUP is available to power the internal LDO that supplies to VCC. This feature provides one more option to reduce power loss and improve overall efficiency. The HL8021 is available in a 16-pin 3x3mm QFN package.

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