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L6739 Datenblatt(PDF) 1 Page - STMicroelectronics |
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L6739 Datenblatt(HTML) 1 Page - STMicroelectronics |
1 / 30 page This is information on a product in full production. May 2014 DocID026384 Rev 1 1/30 L6739 Single-phase PWM controller with light-load efficiency optimization Datasheet - production data Features Flexible power supply from 5 V to 12 V bus Power conversion input as low as 1.5 V Light-load efficiency optimization Embedded bootstrap switch VIN detector 0.8 V internal reference 0.5% output voltage accuracy Remote GND recovery High current integrated drivers Sensorless and programmable precise-OC sense across inductor DCR OV protection Overtemperature protection Programmable oscillator up to 600 kHz LS-less to manage pre-bias startup Adjustable output voltage Disable function Internal soft-start VFQFPN 16 - 3 x 3 mm package Applications Memory and termination supply Subsystem power supply (MCH, IOCH, PCI) CPU and DSP power supply Distributed power supply General DC-DC converter Description The L6739 is a single-phase step-down controller with integrated high current drivers that provides complete control logic and protection to realize a DC-DC converter. The device flexibility allows to manage conversions with power input VIN as low as 1.5 V and the device supply voltage ranging from 5 V to 12 V bus. The L6739 device features a proprietary algorithm that allows light-load efficiency optimization, boosting efficiency without compromising the output voltage ripple. The integrated 0.8 V reference allows generation of output voltages with ± 0.5% accuracy over line and temperature variations. The oscillator is programmable up to 600 kHz. The L6739 provides a programmable overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR. The L6739 device is available in a VFQFPN 16 - 3 x 3 mm package. VFQFPN16 Table 1. Device summary Order code Package Packing L6739TR VFQFPN16 Tape and reel www.st.com |
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Ähnliche Beschreibung - L6739 |
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