L4931 Very low drop voltage regulators with inhibit Datasheet - production data Description The L4931 is a very low drop regulator available in SO-8, DPAK, PPAK and TO-92 packages and in a wide range of output voltages. The very low drop voltage (0.4 V) and the very low quiescent current make it particularly suitable for low noise, low power applications and especially in battery-powered systems. A TTL compatible shutdown logic control function is available in PPAK and SO-8 packages. This means that when the device is used as a local regulator, a part of the board can be put in standby mode, decreasing the total power consumption. It requires only a 2.2 F capacitor for stability allowing space and cost saving. Features The L4931 is available as automotive-grade in Very low dropout voltage (0.4 V) SO-8 package only. This device is qualified Very low quiescent current according to the specification AEC-Q100 of the Typ. 50 A in OFF mode, 600 A in ON automotive market, in the temperature range mode from 40 C to 125 C, and the statistical tests: Output current up to 250 mA PAT, SYL, SBL are performed. Logic controlled electronic shutdown Output voltages: 3.3 3.5 5 12 V Automotive-grade product: 3.3 V VOUT in SO-8 package only Internal current and thermal limit Only 2.2 F for stability Available in 1 % (AB) or 2 % (C) selection at 25 C Supply voltage rejection: 70 dB typ. for 5 V version Temperature range: from -40 to 125 C August 2017 DocID4340 Rev 19 1/32 www.st.com This is information on a product in full production. Contents L4931 Contents 1 Diagram ............................................................................................ 3 2 Pin configuration ............................................................................. 4 3 Maximum ratings ............................................................................. 5 4 Application circuit ........................................................................... 6 5 Electrical characteristics ................................................................ 7 6 Typical application ........................................................................ 16 7 Package information ..................................................................... 17 7.1 TO-92 package information ............................................................. 17 7.2 TO-92 Ammopak packing information ............................................. 18 7.3 PPAK package information ............................................................. 20 7.4 DPAK package information ............................................................. 22 7.5 PPAK and DPAK paking information ............................................... 25 7.6 SO-8 package information .............................................................. 27 7.7 SO-8 packing information ................................................................ 29 8 Ordering information ..................................................................... 30 9 Revision history ............................................................................ 31 2/32 DocID4340 Rev 19