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LP2951ACMMX-3.3/NOPB

Specifications

SKU: 11254176

BUY LP2951ACMMX-3.3/NOPB https://www.utsource.net/itm/p/11254176.html

Parameter Symbol Conditions Min Typical Max Unit
Input Voltage VIN Continuous 2.7 - 15 V
Output Voltage VOUT Fixed - 3.3 - V
Output Current IOUT Continuous - 100 - mA
Quiescent Current IQ VIN = 15V, no load - 60 - μA
Dropout Voltage VD IOUT = 100mA - 450 - mV
Power Supply Rejection Ratio (PSRR) PSRR f = 120Hz, VIN = 15V, VOUT = 5V - 80 - dB
Load Regulation ΔVOUT/ΔIOUT IOUT = 0 to 100mA - 0.01 - %
Line Regulation ΔVOUT/ΔVIN VIN = 2.7 to 15V - 0.01 - %
Thermal Shutdown Temperature TSD - - 160 - °C
Operating Junction Temperature TJ - -25 25 125 °C
Storage Temperature TSTG - -65 - 150 °C

Instructions for LP2951ACMMX-3.3/NOPB

  1. Input Voltage:

    • Ensure the input voltage is within the range of 2.7V to 15V.
    • Do not exceed the maximum input voltage to avoid damaging the device.
  2. Output Voltage:

    • The output voltage is fixed at 3.3V. No external resistors are required for voltage setting.
  3. Output Current:

    • The device can provide up to 100mA of continuous output current.
    • For higher current requirements, consider using a higher power regulator.
  4. Quiescent Current:

    • The quiescent current is typically 60μA at 15V input with no load.
    • This low quiescent current makes the device suitable for battery-powered applications.
  5. Dropout Voltage:

    • The dropout voltage is typically 450mV at 100mA output current.
    • Ensure the input voltage is at least 450mV higher than the output voltage to maintain regulation.
  6. Power Supply Rejection Ratio (PSRR):

    • The PSRR is typically 80dB at 120Hz, indicating good rejection of input ripple.
  7. Load Regulation:

    • The load regulation is typically 0.01%, ensuring stable output voltage over a wide range of load currents.
  8. Line Regulation:

    • The line regulation is typically 0.01%, ensuring stable output voltage over a wide range of input voltages.
  9. Thermal Shutdown:

    • The device will shut down if the junction temperature exceeds 160°C to prevent damage.
  10. Operating and Storage Temperatures:

    • The operating junction temperature range is -25°C to 125°C.
    • The storage temperature range is -65°C to 150°C.
  11. Capacitor Selection:

    • Use a 1μF ceramic capacitor on the input and a 1μF ceramic capacitor on the output for stability.
    • For improved transient response, a larger output capacitor (e.g., 10μF) may be used.
  12. PCB Layout:

    • Place the input and output capacitors as close as possible to the device to minimize noise and improve stability.
    • Ensure proper heat sinking if the device is expected to dissipate significant power.
  13. Handling:

    • Handle the device with care to avoid electrostatic discharge (ESD) damage.
    • Follow standard ESD precautions during assembly and handling.
  14. Testing:

    • Before finalizing the design, test the regulator under various conditions to ensure it meets the required performance specifications.
(For reference only)

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