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L7986 Datasheet(PDF) 1 Page - STMicroelectronics |
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L7986 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 43 page  This is information on a product in full production. September 2014 DocID022450 Rev 6 1/43 L7986 3 A step-down switching regulator Datasheet - production data Features 3 A DC output current 4.5 V to 38 V input voltage Output voltage adjustable from 0.6 V 250 KHz switching frequency, programmable up to 1 MHz Internal soft-start and enable Low dropout operation: 100% duty cycle Voltage feed-forward Zero load current operation Overcurrent and thermal protection VFQFPN 3 x 3 - 10L and HSOP8 package Applications Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors Industrial: PLD, PLA, FPGA, chargers Networking: XDSL, modems, DC-DC modules Computer: optical storage, hard disk drive, printers, audio/graphic cards LED driving Description The L7986/A is a step-down switching regulator with a 3.7 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 3 A current to the load depending on the application conditions. The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz. The QFN and the HSOP packages with exposed pad allow reducing the RthJA down to 60 °C/W and 40 °C/W respectively. Figure 1. Application circuit VFQFPN10 3 x 3 mm HSOP8 exp. pad www.st.com |
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