Specifications
SKU: 11254176
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
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.
Output Voltage:
- The output voltage is fixed at 3.3V. No external resistors are required for voltage setting.
Output Current:
- The device can provide up to 100mA of continuous output current.
- For higher current requirements, consider using a higher power regulator.
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.
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.
Power Supply Rejection Ratio (PSRR):
- The PSRR is typically 80dB at 120Hz, indicating good rejection of input ripple.
Load Regulation:
- The load regulation is typically 0.01%, ensuring stable output voltage over a wide range of load currents.
Line Regulation:
- The line regulation is typically 0.01%, ensuring stable output voltage over a wide range of input voltages.
Thermal Shutdown:
- The device will shut down if the junction temperature exceeds 160°C to prevent damage.
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.
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.
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.
Handling:
- Handle the device with care to avoid electrostatic discharge (ESD) damage.
- Follow standard ESD precautions during assembly and handling.
Testing:
- Before finalizing the design, test the regulator under various conditions to ensure it meets the required performance specifications.
Inquiry - LP2951ACMMX-3.3/NOPB