LP5912Q1.8DRVTQ1

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1. Describe

The LP5912Q1.8DRVTQ1 is a low noise LDO capable of delivering up to 500 mA of output current. Designed to meet the requirements of RF and analog circuits, the LP5912Q1.8DRVTQ1 device offers low noise, high PSRR, low quiescent current, and low line and load transient recovery. The LP5912Q1.8DRVTQ1 offers best-in-class noise performance without noise bypass capacitors and the ability to place remote output capacitors. The device is designed for use with a 1µF input and a 1µF output ceramic capacitor (no separate noise bypass capacitors are required). The device has a fixed output voltage from 0.8 V to 5.5 V in 25 mV steps. Contact Texas Instrument Sales for your specific voltage option needs.

2. Feature

    1. Compliant with automotive application requirements

    2. AEC Q100 certified with the following results

        – Device Temperature Grade 1: –40°C to +125°C ambient operating temperature range

        – Device HBM classification level 2

        – Equipment CDM classification level C6

    3. Input voltage range: 1.6 V to 6.5 V

    4. Output voltage range: 0.8 V to 5.5 V

    5. Output current up to 500 mA

    6. Low output voltage noise: 12 µVRMS (typ)

    7. PSRR at 1 kHz: 75 dB typical

    8. Output voltage tolerance (VOUT ≥ 3.3 V): ±2%

    9. Low IQ (enabled, no load): 30 µA typical

  10. Low dropout (VOUT ≥ 3.3V): 95mV typical at 500mA load

  11. Stable with 1µF ceramic input and output capacitors

  12. Thermal overload and short circuit protection

  13. Reverse current protection

  14. No need for noise bypass capacitors

  15. Output auto-discharge for fast shutdown

  16. Power good output with 140µs typical delay

  17. Internal soft-start to limit inrush current

  18. –40°C to +125°C operating junction temperature range

3. Application

    1. Car infotainment system

    2. Telematics system

    3. ADAS cameras and radar

    4. Navigation System

4. Pin configuration

5. Pin Description

6. Application Information

The LP5912Q1.8DRVTQ1 is designed to meet the requirements of RF and analog circuits by providing low noise, high PSRR, low quiescent current and low line or load transient response. The device offers excellent noise performance without the need for noise bypass capacitors, and is stable to 1µF values with input and output capacitors. The device offers this performance in an industry standard WSON package, which is specified for an operating junction temperature (TJ ) of –40°C to +125°C.