Details
BUY LTC3851EUD#TRPBF https://www.utsource.net/itm/p/4814379.html
IC REG CTRLR BUCK 16QFN
Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
---|---|---|---|---|---|---|
Input Voltage | VIN | Operating Range | 4.5 | - | 60 | V |
Output Voltage | VOUT | Adjustable Range | 0.8 | - | 55 | V |
Switching Frequency | fSW | Default Setting | - | 300 | 1000 | kHz |
Current Limit | ILIM | Peak Inductor Current | - | 20 | 40 | A |
Efficiency | η | Typical at 12VIN, 5VOUT, 1A | - | 92 | - | % |
Quiescent Current | IQ | No Load | - | 60 | - | μA |
Shutdown Current | ISD | VIN = 12V | - | 1 | - | μA |
Operating Temperature | TOPR | Junction | -40 | - | 125 | °C |
Storage Temperature | TSTG | - | -65 | - | 150 | °C |
Instructions for Use
Power Supply Connection:
- Connect the input voltage (VIN) within the operating range of 4.5V to 60V.
- Ensure proper bypassing with ceramic capacitors close to the input pins.
Output Configuration:
- Set the output voltage (VOUT) using external resistors according to the formula provided in the datasheet.
- Verify the output voltage with a multimeter before connecting the load.
Frequency Adjustment:
- Adjust the switching frequency (fSW) by selecting an appropriate resistor value for RT.
- Verify the frequency setting with an oscilloscope if necessary.
Current Limit Setting:
- Set the peak inductor current limit (ILIM) using the ILIM pin and external components as per the application requirements.
- Monitor the current during operation to ensure it does not exceed the set limit.
Thermal Management:
- Ensure adequate heat sinking or PCB copper area is provided to manage junction temperature (TOPR).
- Keep the device within the specified operating temperature range.
Protection Features:
- The device includes overcurrent protection, short-circuit protection, and thermal shutdown.
- Test these features under controlled conditions to ensure proper operation.
Storage and Handling:
- Store the device within the storage temperature range (-65°C to 150°C).
- Handle with care to avoid damage from electrostatic discharge (ESD).
Refer to the detailed datasheet for more specific information and advanced configurations.
(For reference only)View more about LTC3851EUD#TRPBF on main site