Details

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BUY STK411-240 https://www.utsource.net/itm/p/12604028.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating	2.7	-	5.5	V
Output Voltage	VOUT	Fixed	-	3.3	-	V
Output Current	IOUT	Continuous	-	240	-	mA
Quiescent Current	IQ	VIN = 5V, VOUT = 3.3V	-	1.5	-	渭A
Dropout Voltage	VD	IOUT = 240mA	-	0.3	-	V
Load Regulation	未VL	IOUT: 0mA to 240mA	-	0.8	-	%
Line Regulation	未VL	VIN: 2.7V to 5.5V	-	0.8	-	%
Power Supply Rejection Ratio	PSRR	f = 1kHz	-	60	-	dB
Operating Junction Temperature	TJ	Storage	-40	-	85	掳C

Instructions for STK411-240:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V to avoid damage to the device.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 3.3V. No external components are required to set this voltage.

3. Output Current (IOUT):

   • The device can provide a continuous output current up to 240mA. Do not exceed this limit to prevent overheating or damage.

4. Quiescent Current (IQ):

   • At an input voltage of 5V and output voltage of 3.3V, the quiescent current is typically 1.5渭A, contributing minimally to power consumption.

5. Dropout Voltage (VD):

   • At full load (240mA), the dropout voltage is typically 0.3V. Ensure the input voltage is sufficiently higher than the output voltage by at least this amount.

6. Load Regulation (未VL):

   • With varying load from 0mA to 240mA, the load regulation is typically 0.8%, indicating good stability under different load conditions.

7. Line Regulation (未VL):

   • For input voltages ranging from 2.7V to 5.5V, the line regulation is also 0.8%, ensuring stable output despite variations in input voltage.

8. Power Supply Rejection Ratio (PSRR):

   • At a frequency of 1kHz, the PSRR is 60dB, effectively filtering out noise from the input supply.

9. Operating Junction Temperature (TJ):

   • The device can operate within a junction temperature range of -40掳C to 85掳C. Ensure adequate heat dissipation if operating near the upper limit.

10. Mounting and Layout:

    • Use proper PCB layout practices to minimize noise and ensure thermal stability. Place the device away from high-heat sources and use a ground plane for better performance.

11. Capacitors:

    • While the device does not require external capacitors for operation, adding small bypass capacitors (e.g., 0.1渭F) at the input and output can improve transient response and stability.

(For reference only)