Details

---

BUY TPS54200DDCT https://www.utsource.net/itm/p/7663131.html
Buck Switching Regulator IC Positive Adjustable -0.1V 1 Output 1.5A SOT-23-6 Thin, TSOT-23-6

Parameter	Symbol	Test Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Continuous	4.5	-	17	V
Output Voltage	VOUT	Adjustable	0.8	-	5.5	V
Switching Frequency	fSW	Programmable	200	500	2000	kHz
Quiescent Current	IQ	VIN = 12V, VOUT = 3.3V, IOUT = 0A	-	90	-	μA
Efficiency	η	VIN = 12V, VOUT = 3.3V, IOUT = 1A	-	90	-	%
Load Regulation	ΔVOUT	VIN = 12V, IOUT from 0 to 3A	-	±1	-	%
Line Regulation	ΔVOUT	IOUT = 1A, VIN from 4.5V to 17V	-	±1	-	%
Dropout Voltage	VDROPOUT	IOUT = 1A	-	200	-	mV
Thermal Shutdown	TSD	-	-	160	-	°C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 4.5V to 17V.

2. Output Voltage (VOUT):

   • Set the output voltage using an external resistor divider network according to the formula provided in the datasheet.

3. Switching Frequency (fSW):

   • Adjust the switching frequency by selecting an appropriate external resistor value for the RT pin.

4. Quiescent Current (IQ):

   • Monitor the quiescent current to ensure it remains low when no load is present.

5. Efficiency (η):

   • Optimize efficiency by choosing components with low resistance and minimizing parasitic losses.

6. Load and Line Regulation:

   • Verify that the output voltage remains stable under varying load and line conditions.

7. Dropout Voltage (VDROPOUT):

   • Ensure sufficient headroom between VIN and VOUT to avoid dropout conditions.

8. Thermal Shutdown (TSD):

   • Check for thermal shutdown protection to safeguard against overheating.

For detailed design considerations and application circuits, refer to the full datasheet of the TPS54200DDCT.

(For reference only)