Details

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BUY LTC1550CS8-4.1 https://www.utsource.net/itm/p/8138114.html
New and original

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating Range	2.7		5.5	V
Output Voltage	VOUT	Fixed Output		4.1		V
Quiescent Current	IQ			60		μA
Load Current	ILOAD	Continuous	0		300	mA
Dropout Voltage	VDROPOUT	@ 300mA, TA=25°C		300		mV
Power Supply Rejection	PSRR	@ 1kHz		70		dB
Line Regulation	ΔVOUT/ΔVIN	@ ILOAD=300mA		0.05		%
Load Regulation	ΔVOUT/ΔILOAD	VIN=5V		0.05		%
Start-Up Time	tSTARTUP	@ 300mA Load Step		1		ms

Instructions for LTC1550CS8-4.1:

1. Power Supply Connection:

   • Connect the input voltage (VIN) to a power supply within the operating range of 2.7V to 5.5V.
   • Ensure that the power supply is stable and capable of providing sufficient current.

2. Output Configuration:

   • The LTC1550CS8-4.1 has a fixed output voltage of 4.1V. No external components are required for setting the output voltage.

3. Capacitor Selection:

   • Place a ceramic capacitor (typically 1μF) at the input (VIN) and output (VOUT) terminals for stability.
   • Ensure capacitors have low Equivalent Series Resistance (ESR).

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at higher load currents or in high ambient temperatures.

5. Load Application:

   • The device can provide up to 300mA continuously. Ensure the load does not exceed this limit to avoid overheating or damage.

6. PCB Layout:

   • Keep the layout compact with short traces between the input and output capacitors and the regulator.
   • Use ground planes to improve thermal performance and reduce noise.

7. Start-Up Behavior:

   • When power is applied, the regulator will start up within approximately 1ms under a full load condition.

8. Power Supply Rejection Ratio (PSRR):

   • The device offers good rejection of ripple from the input supply, especially at frequencies around 1kHz.

(For reference only)