Specifications
SKU: 981754
BIPOLAR ANALOG INTERGRATED CIRCUIT
Parameter | Symbol | Min | Typical | Max | Unit | Notes |
---|---|---|---|---|---|---|
Input Voltage | V_IN | 2.7 | - | 5.5 | V | |
Output Voltage | V_OUT | 1.8 | - | 5.0 | V | Adjustable |
Output Current | I_OUT | - | 1.5 | 3.0 | A | |
Quiescent Current | I_Q | - | 20 | 40 | μA | |
Dropout Voltage | V_DROPOUT | - | 0.2 | 0.5 | V | At I_OUT = 3.0A |
Power Dissipation | P_DISS | - | - | 15 | W | |
Operating Temperature | T_OP | -40 | - | 125 | °C | |
Storage Temperature | T_STOR | -65 | - | 150 | °C | |
Thermal Resistance (θJA) | θJA | - | 25 | - | °C/W |
Instructions for Use:
Input Voltage (V_IN):
- Ensure the input voltage is within the range of 2.7V to 5.5V.
- Avoid exceeding the maximum input voltage to prevent damage.
Output Voltage (V_OUT):
- The output voltage is adjustable between 1.8V and 5.0V.
- Use an external resistor network to set the desired output voltage.
Output Current (I_OUT):
- The device can provide up to 3.0A of output current.
- For optimal performance, keep the load current within the typical range of 1.5A.
Quiescent Current (I_Q):
- The quiescent current is typically around 20μA.
- This low quiescent current helps in minimizing power loss when the device is active but not driving a load.
Dropout Voltage (V_DROPOUT):
- The dropout voltage is the difference between the input and output voltages at which the regulator can still maintain regulation.
- At a load current of 3.0A, the dropout voltage is typically 0.2V and can go up to 0.5V.
Power Dissipation (P_DISS):
- The maximum power dissipation is 15W.
- Ensure adequate heat sinking or cooling to manage power dissipation, especially under high load conditions.
Operating Temperature (T_OP):
- The operating temperature range is from -40°C to 125°C.
- Avoid exposing the device to temperatures outside this range to ensure reliable operation.
Storage Temperature (T_STOR):
- The storage temperature range is from -65°C to 150°C.
- Store the device in a dry environment to prevent moisture-related issues.
Thermal Resistance (θJA):
- The thermal resistance from junction to ambient is typically 25°C/W.
- Use a heatsink if the application requires high power dissipation to maintain a safe operating temperature.
PCB Layout:
- Place the device close to the load to minimize trace inductance and improve stability.
- Use wide and short traces for power and ground connections to reduce parasitic inductance and resistance.
Capacitors:
- Use ceramic capacitors with low ESR for input and output filtering.
- Place the input capacitor as close as possible to the input pin to filter out noise.
- Place the output capacitor close to the output pin to stabilize the output voltage.
Protection:
- The device includes over-temperature and short-circuit protection.
- However, it is recommended to add external fuses or current-limiting resistors for additional protection.
Adjustment:
- To adjust the output voltage, use the following formula: [ V_ = V_ left(1 + fracright) ] where ( V_ ) is the reference voltage (typically 1.25V), and ( R_1 ) and ( R_2 ) are the external resistors.
Stability:
- Ensure the loop stability by using appropriate compensation components if necessary.
- Refer to the datasheet for specific recommendations on compensation networks.
Inquiry - UPC1358H