Details

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BUY TPS61070DDCR https://www.utsource.net/itm/p/1567009.html
90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	0.5	-	5.5	V	Operating input voltage range
Output Voltage	VOUT	-	3.3	-	V	Fixed output voltage (depending on model)
Switching Frequency	fSW	-	1.2	-	MHz	Typical switching frequency
Efficiency	畏	-	90	-	%	Typical efficiency at nominal conditions
Quiescent Current	IQ	-	47	-	渭A	Quiescent current at no load, VIN = 3V
Load Regulation	-	-	0.8	-	%	Change in output voltage over load
Line Regulation	-	-	0.05	-	%/V	Change in output voltage per unit change in input voltage
Start-Up Time	tSTART	-	2.6	-	ms	Time to reach regulation from power-up
Short-Circuit Current Limit	ICLIM	-	1.2	-	A	Peak inductor current limit during short circuit
Shutdown Current	ISD	-	0.1	-	渭A	Supply current when disabled

Instructions for TPS61070DDCR:

1. Power Supply Connection:

   • Connect the input capacitor (CIN) close to the VIN and GND pins to ensure stable operation.
   • Ensure the input voltage is within the specified range (0.5V to 5.5V).

2. Output Configuration:

   • The output voltage is fixed based on the model selected. No external resistors are required for setting the output voltage.

3. Inductor Selection:

   • Choose an inductor with a saturation current higher than the peak current limit of the device to avoid core saturation.
   • Inductance values typically range from 1渭H to 10渭H depending on the application requirements.

4. Capacitor Selection:

   • Select output capacitors (COUT) that have low ESR and can handle the ripple current.
   • Typical capacitance values range from 10渭F to 22渭F.

5. Thermal Considerations:

   • Place the device in areas with adequate airflow or use heatsinks if necessary to manage thermal dissipation.

6. PCB Layout:

   • Keep the layout compact, especially for high-frequency components like the inductor and capacitors.
   • Minimize trace lengths and loop areas to reduce noise and improve efficiency.

7. Shutdown Operation:

   • To disable the device, pull the EN pin low. This will minimize the supply current to the shutdown current level.

8. Short-Circuit Protection:

   • The device includes internal short-circuit protection which limits the peak inductor current during faults.

Note: Always refer to the latest datasheet provided by Texas Instruments for detailed specifications and additional guidelines.

(For reference only)