Specifications
SKU: 4599062
1.5MHz , 800mA Synchronous Step-Down Regulator in SOT23-5
Parameter | Description |
---|---|
Part Number | KB3426-ADJ |
Type | Adjustable DC-DC Converter |
Input Voltage Range | 4.5V to 28V |
Output Voltage Range | 1.25V to 26V (Adjustable) |
Output Current | Up to 3A |
Efficiency | Up to 95% (depending on input/output voltages and load) |
Operating Temperature | -40°C to +85°C |
Package Type | TO-220 or SMD (Surface Mount Device) |
Dimensions | TO-220: 7.9mm x 6.35mm x 4.45mm (LxWxH) |
Features | - Short-circuit protection - Thermal shutdown - Low ripple and noise |
Applications | - Power supplies - Battery charging - Industrial control systems |
Instructions for Use
Input Connection:
- Connect the positive terminal of the input power supply to the
VIN
pin. - Connect the negative terminal of the input power supply to the
GND
pin.
- Connect the positive terminal of the input power supply to the
Output Configuration:
- The output voltage can be adjusted using an external resistor divider network connected to the
ADJ
pin. - The formula to calculate the output voltage is: ( V_ = 1.25 times left(1 + fracright) )
- Where ( R_1 ) is the resistor between
ADJ
andGND
, and ( R_2 ) is the resistor betweenVOUT
andADJ
.
- The output voltage can be adjusted using an external resistor divider network connected to the
Output Connection:
- Connect the load to the
VOUT
andGND
pins.
- Connect the load to the
Thermal Considerations:
- Ensure adequate heat dissipation if operating at high currents or in high ambient temperatures.
- For TO-220 packages, use a heatsink if necessary.
Protection Features:
- The device has built-in short-circuit and thermal protection.
- In case of a fault, the converter will automatically shut down to prevent damage.
Mounting:
- For TO-220 packages, ensure proper mechanical mounting to avoid stress on the leads.
- For SMD packages, follow standard surface mount soldering guidelines.
Testing:
- Before connecting the load, verify the output voltage with a multimeter to ensure it is within the desired range.
- Gradually increase the load to test the stability and efficiency of the converter.
Inquiry - KB3426-ADJ