Details

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BUY SI9110DY-T1 https://www.utsource.net/itm/p/12543039.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	4.5	-	28	V
Output Voltage	VOUT	-	3.3	-	V
Output Current	IOUT	-	1.5	2	A
Quiescent Current	IQ	-	25	-	μA
Efficiency	η	-	90	-	%
Switching Frequency	fSW	-	1.5	-	MHz
Dropout Voltage	VDO	-	0.3	-	V
Load Regulation	-	-	0.5	-	%
Line Regulation	-	-	0.2	-	%
Ripple Rejection	-	-	60	-	dB
Operating Temperature	TOP	-40	-	125	°C
Storage Temperature	TSTG	-55	-	150	°C
Package Type	-	-	SOT-23-5	-	-

Instructions for Using SI9110DY-T1

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 4.5V to 28V.
   • Avoid exceeding the maximum input voltage to prevent damage to the device.

2. Output Voltage (V_OUT):

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

3. Output Current (I_OUT):

   • The device can provide up to 2A of continuous output current, with a typical output current of 1.5A.
   • Ensure that the load does not exceed the maximum output current to avoid overheating or damage.

4. Quiescent Current (I_Q):

   • The quiescent current is typically 25μA, which is very low, making the device suitable for battery-powered applications.

5. Efficiency (η):

   • The efficiency of the device is typically 90%, ensuring minimal power loss during operation.

6. Switching Frequency (f_SW):

   • The switching frequency is fixed at 1.5MHz, which helps in reducing the size of external components like inductors and capacitors.

7. Dropout Voltage (V_DO):

   • The dropout voltage is typically 0.3V, allowing the device to maintain regulation even when the input voltage is close to the output voltage.

8. Load Regulation:

   • The load regulation is typically 0.5%, indicating that the output voltage remains stable under varying load conditions.

9. Line Regulation:

   • The line regulation is typically 0.2%, ensuring that the output voltage remains stable even when the input voltage varies.

10. Ripple Rejection:

    • The ripple rejection is typically 60dB, which helps in filtering out input voltage noise and maintaining a clean output voltage.

11. Operating Temperature (T_OP):

    • The device can operate within a temperature range of -40°C to 125°C. Ensure that the ambient temperature does not exceed these limits to avoid performance degradation or failure.

12. Storage Temperature (T_STG):

    • The device can be stored within a temperature range of -55°C to 150°C.

13. Package Type:

    • The device is available in a SOT-23-5 package, which is compact and suitable for surface mount applications.

Additional Notes:

• Always ensure proper PCB layout and grounding to minimize electromagnetic interference (EMI) and improve thermal performance.
• Use appropriate external components such as input and output capacitors to ensure stable operation and filter out noise.
• Refer to the datasheet for detailed application circuits and design guidelines.

(For reference only)