TLV1171 Datasheet | Texas Instruments

ATURES - 2 Accuracy: 1.5% (typ) - Low IQ: 100 μA (max) - 500x Lower Than Standard 1117 Devices - VIN: 2.0 V to 5.5 V - Absolute Maximum VIN: 6.0 V - Stable with 0-m A Output Current - Low Dropout: 455 m V at 1 A for VOUT = 3.3 V - High PSRR: 65 d B at 1 k Hz - Minimum Ensured Current Limit: 1.1 A - Stable with Cost-Effective Ceramic Capacitors: - With 0-Ω ESR - Temperature Range: - 40°C to +125°C - Thermal Shutdown and Overcurrent Protection - Available Package: SOT223 - See the Package Option Addendum at the end of this document for a plete list of available voltage options. APPLICATIONS - Set Top Boxes - TVs and Monitors - PC Peripherals, Notebooks, and Motherboards - Modems and Other munication Products - Switching Power-Supply Post-Regulation DESCRIPTION The TLV1171 low-dropout (LDO) linear regulator is a low input voltage version of the popular 1117 voltage regulator. The TLV1171 is an extremely low-power device that consumes 500x lower quiescent current than the traditional 1117 voltage regulator, making the TLV1171 suitable for applications that mandate very low standby current. The TLV1171 LDO is also stable with 0 m A of load current; there is no minimum load requirement, making the device an ideal choice for applications where the regulator is required to power very small loads during standby in addition to large currents on the order of 1 A during normal operation. The TLV1171 offers excellent line and load transient performance, resulting in very small magnitude output voltage undershoots and overshoots when the load current requirement changes from less than 1 m A to more than 500 m A. A precision band gap and error amplifier provides 1.5% accuracy. A very high power-supply rejection ratio enables the device to be used for postregulation after a switching regulator. Other valuable Features include low output noise and low-dropout voltage. The device is internally pensated to be stable with 0-Ω equivalent series resistance (ESR) capacitors. These key...