TL3317

Continuous input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V
Package thermal impedance, qJA (see Notes 1 and 2): KC package . . . . . . . . . . . . . . . . . . . . . . . . . 22°C/W
KTE package . . . . . . . . . . . . . . . . . . . . . . . . 23°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C


† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Maximum power dissipation is a function of TJ(max), qJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) TA)/qJA. Operating at the absolute maximum TJ of 150°C can affect  eliability.
2. The package thermal impedance is calculated in accordance with JESD 51.

The TL3317-series devices are positive low-dropout regulators, designed to provide an output current in excess of 3 A. These devices are available in 2.5-V, 2.85-V, 3.3-V, 5-V, and adjustable output voltage options. All internal circuitry is designed to operate down to 1-V dropout voltage. The dropout voltage is specified at a maximum of 1.3 V at 3 A, decreasing with lower load currents. And, unlike pnp-type regulators, where up to 10% of the output current is wasted as quiescent current, the quiescent current of the TL3317 flows into the load, increasing the overall efficiency of the device. The TL3317 requires a minimum of 10 mF output capacitance for stability. Output capacitors of this size, or larger, normally are included in most regulator designs. The TL3317 series of high-current adjustable and fixed-voltage LDO regulators is intended for designs requiring a low-cost solution for the regulation of low-voltage power supplies in DVD-ROM drives, soundcards, motherboards, consumer electronics, and communications electronics. Typical applications include high-efficiency linear regulators, battery chargers, post regulation for switching power supplies, constant-current regulators, and microprocessor supplies.

The TL3317C-series devices are characterized for operation over the virtual junction temperature range of 0°C to 125°C.