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|Type:||Bipolar Junction Transistor||Application:||Audio Power Amplifier|
|Warranty:||90days After Shipping||Transistor Type:||NPN|
|Power - Max:||200mW|
TPS54418ARTER Bipolar Junction Transistor,
200mW Bipolar Junction Transistor,
200mW Transistor NPN PNP
NPN PNP Transistor Texas Instruments/TI TPS54418ARTER
|Vin (Min) (V)||2.95|
|Vin (Max) (V)||6|
|Vout (Min) (V)||0.8|
|Vout (Max) (V)||4.5|
|Iout (Max) (A)||4|
|Iq (Typ) (uA)||350|
|Switching frequency (Min) (kHz)||200|
|Switching frequency (Max) (kHz)||2000|
|Features||Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Soft Start Adjustable|
|Operating temperature range (C)||-40 to 150|
|Regulated outputs (#)||1|
TheTPS54418A device is a full-featured 6-V, 4-A, synchronous, step-down, current modeconverter with two integrated MOSFETs.
The TPS54418A device enables small designs by integrating the MOSFETs, implementingcurrent mode control to reduce external component count, reducing inductor size by enablingup to 2-MHz switching frequency, and minimizing the device footprint with a small, 3mm × 3 mm, thermally enhanced, QFN package.
The TPS54418A device provides accurate regulation for a variety of loads with an accurate±1% voltage reference (VREF) over temperature.
Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supplycurrent. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdownmode.
Undervoltage lockout is internally set at 2.6 V, but can be increased by programming thethreshold with a resistor network on the enable pin. The output voltage start-up ramp is controlledby the soft-start pin. An open-drain power good signal indicates the output is within 93% to 107%of its nominal voltage. Frequency foldback and thermal shutdown protects the device during anovercurrent condition.
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