L7985A

L7985 2 A step-down switching regulator Datasheet - production data Applications  Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors  Industrial: PLD, PLA, FPGA, chargers  Networking: XDSL, modems, DC-DC modules VFDFPN10 3 x 3 mm  Computer: optical storage, hard disk drive, printers, audio/graphic cards HSOP8 exp. pad  LED driving Features Description  2 A DC output current The L7985/A is a step-down switching regulator with a 2.5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 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 DFN and the HSOP packages with exposed pad allow the reduction of RthJA down to 60 °C/W and 40 °C/W respectively.  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  VFDFPN 3x3 - 10L and HSOP8 package Figure 1. Application circuit 9LQ / 9  9 9&& *1' )6: )% &      /    9287 IURP 9 WR 9LQ 287 6