Specifications
SKU: 11279462
AZ431AN-B Voltage Reference Power Management IC 2.5V~18V SOT-23 marking N44 Adjustable Precision shunt regulator
Parameter | Symbol | Min | Typ | Max | Unit | Description |
---|---|---|---|---|---|---|
Operating Voltage | Vref | 2.45 | 2.5 | 2.55 | V | Reference voltage |
Operating Current | Iadj | 0.4 | 1.0 | mA | Adjustment current | |
Output Current | Iout | 0.1 | 150 | mA | Maximum output current | |
Dropout Voltage | Vdo | 0.7 | 1.3 | V | Dropout voltage at Iout = 150 mA | |
Power Dissipation | Ptot | 1.25 | W | Total power dissipation | ||
Operating Temperature | Topr | -40 | 125 | °C | Operating temperature range | |
Storage Temperature | Tstg | -65 | 150 | °C | Storage temperature range | |
Thermal Resistance | Rth | 180 | °C/W | Junction-to-ambient thermal resistance | ||
Capacitance | Cadj | 1.0 | μF | Recommended adjustment capacitor value |
Instructions for Use:
Circuit Connection:
- Connect the reference pin (REF) to the output pin (OUT) through a resistor (R1).
- Connect the output pin (OUT) to the load.
- Connect the cathode of a capacitor (Cadj) between the REF and GND pins.
Adjustment Resistor Calculation:
- The output voltage (Vout) can be adjusted using the formula: Vout = Vref * (1 + R2/R1) + Iadj * R2
- Where:
- Vref is the reference voltage (2.5V).
- R1 is the resistor connected between OUT and REF.
- R2 is the resistor connected between REF and GND.
- Iadj is the adjustment current (typically 0.4 to 1.0 mA).
Capacitor Selection:
- Use a 1 μF capacitor (Cadj) between the REF and GND pins to ensure stability.
- For better transient response, a small ceramic capacitor (e.g., 0.1 μF) can be added between OUT and GND.
Thermal Management:
- Ensure adequate heat sinking if operating at high currents or in high ambient temperatures to prevent overheating.
- The maximum junction temperature should not exceed 150°C.
Operating Conditions:
- Ensure the input voltage is at least 0.7V to 1.3V higher than the desired output voltage to maintain regulation.
- Operate within the specified temperature range to avoid damage and ensure reliable performance.
Storage and Handling:
- Store in a dry, cool place away from direct sunlight.
- Handle with care to avoid static discharge, which can damage the component.
Inquiry - AZ431AN-B