Details

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BUY TPS79925DDCTG4 https://www.utsource.net/itm/p/12612102.html

Parameter	Symbol	Min	Typical	Max	Unit	Conditions
Input Voltage	VIN	1.7		5.5	V
Output Voltage	VOUT		2.5		V	Fixed output
Output Current	IOUT			200	mA	Continuous
Dropout Voltage	VDROPOUT		0.28		V	IOUT = 100 mA, VIN = 3.0 V
Quiescent Current	IQ		1.8		渭A	No load, VIN = 3.3 V
Shutdown Current	ISD		0.1		渭A	VIN = 3.3 V, EN = 0 V
Load Regulation			0.2		%	IOUT = 0 to 200 mA
Line Regulation			0.01		%/V	VIN = 1.7 to 5.5 V
PSRR (1 kHz)			60		dB	VIN = 3.3 V, IOUT = 100 mA
Operating Temperature	TJ	-40		125	掳C
Storage Temperature	TSTG	-65		150	掳C

Instructions for Using TPS79925DDCTG4:

1. Input Voltage:

   • Ensure the input voltage is within the range of 1.7 V to 5.5 V.
   • Use appropriate decoupling capacitors on the input side to filter out noise and stabilize the input voltage.

2. Output Voltage:

   • The TPS79925DDCTG4 provides a fixed output voltage of 2.5 V.
   • Use a bypass capacitor on the output to maintain stability and reduce ripple.

3. Output Current:

   • The device can supply up to 200 mA continuously.
   • For higher current requirements, consider using a heatsink or a more powerful regulator.

4. Dropout Voltage:

   • The dropout voltage is typically 0.28 V at 100 mA.
   • Ensure that the input voltage is at least 0.28 V above the output voltage to maintain regulation.

5. Quiescent Current:

   • The quiescent current is very low, typically 1.8 渭A, which makes the device suitable for battery-powered applications.

6. Shutdown Current:

   • When the enable pin (EN) is set to 0 V, the shutdown current is typically 0.1 渭A, significantly reducing power consumption.

7. Load and Line Regulation:

   • The load regulation is 0.2%, ensuring stable output voltage over a wide range of load currents.
   • The line regulation is 0.01% per volt, maintaining output stability with varying input voltages.

8. Power Supply Rejection Ratio (PSRR):

   • The PSRR at 1 kHz is 60 dB, effectively rejecting input voltage variations and noise.

9. Operating and Storage Temperature:

   • The operating temperature range is from -40掳C to 125掳C.
   • The storage temperature range is from -65掳C to 150掳C.

10. PCB Layout Considerations:

    • Place the input and output capacitors as close as possible to the regulator to minimize trace inductance and improve transient response.
    • Use wide and short traces for power paths to reduce resistance and inductance.

11. Enable Pin:

    • The enable pin (EN) can be used to control the operation of the regulator. Connect it to VCC to enable the regulator and to GND to disable it.

12. Thermal Management:

    • If operating at high temperatures or under high current conditions, ensure adequate heat dissipation by using a heatsink or a thermal pad.

By following these guidelines, you can ensure optimal performance and reliability of the TPS79925DDCTG4 in your application.

(For reference only)