Details

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BUY TPS62086RLTR https://www.utsource.net/itm/p/7662292.html
Buck Switching Regulator IC Positive Fixed 3.3V 1 Output 3A 7-VFDFN

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	2.5	-	5.5	V	Operating input voltage range
Output Voltage	VOUT	-	0.8	3.6	V	Adjustable output voltage range
Quiescent Current	IQ	-	75	-	μA	Supply current at no load
Efficiency	η	-	95	-	%	Typical efficiency at 1 A load
Switching Frequency	fSW	-	2.2	-	MHz	Fixed switching frequency
Dropout Voltage	VDROPOUT	-	250	-	mV	Dropout voltage at 300 mA load
Load Regulation	ΔVOUT/ΔILOAD	-	0.4	-	%	Load regulation from 10% to 100% load
Line Regulation	ΔVOUT/ΔVIN	-	0.1	-	%	Line regulation from 2.5 V to 5.5 V
Thermal Shutdown	TSD	-	160	-	°C	Thermal shutdown temperature

Instructions for Using TPS62086RLTR

1. Input Capacitor Selection:

   • Choose an input capacitor with a low ESR and high ripple current capability.
   • Recommended values are typically in the range of 1 μF to 10 μF.

2. Output Capacitor Selection:

   • Use ceramic capacitors with X5R or X7R dielectric types.
   • Ensure the output capacitor can handle the required ripple current.
   • Typical value is around 10 μF.

3. Setting the Output Voltage:

   • The output voltage is set by external resistors R1 and R2 connected between VOUT, FB, and GND.
   • Use the formula ( V_ = 0.8 times (1 + frac) ).

4. PCB Layout Considerations:

   • Keep the distance between input and output capacitors and the IC as short as possible.
   • Place the ground plane beneath the IC and capacitors to minimize noise.

5. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high loads or in high ambient temperatures.
   • Monitor the thermal shutdown threshold to avoid damage.

6. Start-Up and Shutdown:

   • The device starts up when the input voltage exceeds the undervoltage lockout threshold.
   • Proper sequencing may be required in multi-rail systems.

7. Protection Features:

   • The device includes overcurrent protection, which limits the output current to prevent damage.
   • Thermal shutdown protects the device from overheating.

(For reference only)