Details

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BUY STD1703L https://www.utsource.net/itm/p/12608737.html

Parameter	Symbol	Min	Typical	Max	Unit	Description
Input Voltage	V_IN	2.7	-	5.5	V	Operating input voltage range
Output Voltage	V_OUT	-	3.3	-	V	Fixed output voltage
Output Current	I_OUT	-	300	-	mA	Maximum continuous output current
Quiescent Current	I_Q	-	50	-	渭A	Quiescent current at no load
Dropout Voltage	V_DO	-	200	-	mV	Dropout voltage at I_OUT = 300mA
Load Regulation	-	-	1	-	%	Change in output voltage for a load change from 0 to 300mA
Line Regulation	-	-	0.1	-	%/V	Change in output voltage for a line change from 2.7V to 5.5V
Ripple Rejection	-	-	60	-	dB	Attenuation of input ripple at 1kHz
Operating Temperature	T_OP	-40	-	85	掳C	Operating ambient temperature range
Storage Temperature	T_STG	-65	-	150	掳C	Storage temperature range

Instructions:

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Avoid connecting the input to voltages outside this range to prevent damage to the device.

2. Output Voltage (V_OUT):

   • The output voltage is fixed at 3.3V. No external resistors are required for voltage setting.

3. Output Current (I_OUT):

   • The device can provide up to 300mA of continuous output current.
   • For higher current requirements, consider using a different regulator or additional cooling measures.

4. Quiescent Current (I_Q):

   • The quiescent current is typically 50渭A, which helps in maintaining low power consumption even at no load.

5. Dropout Voltage (V_DO):

   • The dropout voltage is approximately 200mV at maximum output current. This ensures efficient operation even at low input voltages.

6. Load Regulation:

   • The load regulation is less than 1%, indicating minimal change in output voltage with varying load conditions.

7. Line Regulation:

   • The line regulation is 0.1% per volt, ensuring stable output voltage even with variations in input voltage.

8. Ripple Rejection:

   • The device provides 60dB of ripple rejection at 1kHz, effectively filtering out input voltage noise.

9. Operating Temperature (T_OP):

   • The device operates reliably within the temperature range of -40掳C to 85掳C. Ensure adequate heat dissipation for high current applications.

10. Storage Temperature (T_STG):

    • Store the device in temperatures ranging from -65掳C to 150掳C to maintain its performance and reliability.

11. PCB Layout:

    • Use a good quality PCB layout with proper ground planes and short leads to minimize noise and improve stability.
    • Place bypass capacitors close to the input and output pins to filter out high-frequency noise.

12. Capacitors:

    • Use ceramic capacitors with low ESR for input and output bypassing. Typical values are 10渭F for input and 10渭F for output.

13. Thermal Considerations:

    • For high current applications, ensure the device has adequate thermal management, such as a heatsink or thermal pad, to dissipate heat effectively.

(For reference only)