Details

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BUY TPS74401KTWT https://www.utsource.net/itm/p/741515.html
3.0A Ultra-Low Dropout Linear Regulator

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Continuous operating range	1.7		5.5	V
Output Voltage	VOUT	Fixed output		3.3		V
Dropout Voltage	VDROPOUT	IOUT = 100mA, VIN = 3.3V		280		mV
Quiescent Current	IQ	VIN = 3.3V, VOUT = 3.3V, IOUT = 0mA		60		μA
Shutdown Current	ISD	VIN = 3.3V, EN = Low		0.1		μA
Load Regulation		IOUT: 0mA to 100mA		±1		%
Line Regulation		VIN: 2.3V to 5.5V		±0.5		%
PSRR at 1kHz				-58		dB
Transient Response		ΔIOUT = 0mA to 100mA		±30		mV

Instructions for TPS74401KTWT

1. Power Supply Connection:

   • Connect the input voltage (VIN) to a power supply within the specified range of 1.7V to 5.5V.
   • Ensure proper bypass capacitors are placed close to the input and output pins for stability.

2. Enable Pin Configuration:

   • The enable pin (EN) can be used to turn the regulator on or off. Connect this pin to a logic high level to activate the regulator or to a logic low level to put it into shutdown mode.

3. Output Capacitor Selection:

   • Use a minimum of 1μF ceramic capacitor at the output for stability. Larger values may be used depending on load requirements and noise considerations.

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at higher currents or in environments with elevated temperatures.

5. Layout Guidelines:

   • Keep the PCB layout compact, minimizing trace lengths between the regulator and its associated components.
   • Ensure ground planes are well connected to minimize noise and improve performance.

6. Protection Features:

   • The device includes internal protection features such as thermal shutdown and current limiting to safeguard against overtemperature and overload conditions.

For detailed design and application notes, refer to the manufacturer’s datasheet.

(For reference only)