Specifications
SKU: 994457
LCD Controller/DriverLCD/
Parameter | Symbol | Conditions | Min | Typical | Max | Unit |
---|---|---|---|---|---|---|
Input Voltage | VIN | - | 2.7 | - | 5.5 | V |
Output Voltage | VOUT | - | 1.8 | - | 3.3 | V |
Output Current | IOUT | VIN = 5V, VOUT = 3.3V | - | 150 | - | mA |
Quiescent Current | IQ | VIN = 5V, No Load | - | 2.5 | - | μA |
Dropout Voltage | VD | IOUT = 150mA | - | 0.4 | - | V |
PSRR (Power Supply Rejection Ratio) | PSRR | f = 1kHz, VIN = 5V, VOUT = 3.3V | - | 60 | - | dB |
Operating Temperature | TOPR | - | -40 | - | 85 | °C |
Storage Temperature | TSTG | - | -65 | - | 150 | °C |
Instructions for Use:
Input Voltage (VIN):
- Ensure the input voltage is within the range of 2.7V to 5.5V.
- Avoid applying voltages outside this range to prevent damage to the device.
Output Voltage (VOUT):
- The output voltage can be set to 1.8V or 3.3V depending on the application.
- Use appropriate external resistors if adjustable output voltage is required.
Output Current (IOUT):
- The maximum continuous output current is 150mA.
- Ensure the load does not exceed this limit to avoid overheating and potential damage.
Quiescent Current (IQ):
- The quiescent current is typically 2.5μA when no load is connected.
- This low quiescent current makes the device suitable for battery-powered applications.
Dropout Voltage (VD):
- The dropout voltage is typically 0.4V at a load current of 150mA.
- Ensure the input voltage is at least 0.4V higher than the output voltage to maintain regulation.
Power Supply Rejection Ratio (PSRR):
- The PSRR is 60dB at 1kHz, indicating good rejection of ripple and noise from the input supply.
Operating Temperature (TOPR):
- The device operates reliably over a temperature range of -40°C to 85°C.
- Avoid exposing the device to temperatures outside this range.
Storage Temperature (TSTG):
- Store the device in an environment with temperatures between -65°C and 150°C to ensure long-term reliability.
Mounting:
- Mount the device on a PCB with proper thermal management to dissipate heat effectively.
- Use a heatsink if necessary, especially for high-current applications.
Capacitors:
- Use appropriate input and output capacitors to stabilize the voltage and filter out noise.
- Recommended values: 1μF ceramic capacitor for both input and output.
PCB Layout:
- Keep the traces short and wide to minimize inductance and resistance.
- Place the input and output capacitors as close as possible to the device.
Testing:
- Test the device under various conditions to ensure it meets the specified performance parameters.
- Monitor the output voltage and current to ensure stable operation.
Inquiry - LC7985ND