Details

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BUY U4091BM https://www.utsource.net/itm/p/12609122.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	Operating	4.5	5.0	5.5	V
Input Voltage	VIN	Operating	-0.3		5.5	V
Output Current	IOUT	Continuous		200		mA
Quiescent Current	IQ	VDD = 5V		1.0		mA
Dropout Voltage	VDROPOUT	IOUT = 100mA		0.5		V
PSRR		1kHz, RL=1k惟		70		dB
Line Regulation		4.5V to 5.5V		0.01		%
Load Regulation		IOUT: 0 to 200mA		0.01		%
Thermal Shutdown	TSD			160		掳C

Instructions for U4091BM

1. Power Supply Connection:

   • Connect the supply voltage (VDD) within the range of 4.5V to 5.5V.
   • Ensure that the input voltage does not exceed 5.5V to prevent damage.

2. Output Configuration:

   • The device can provide a continuous output current up to 200mA. Ensure that the load does not exceed this limit to avoid overheating or damage.

3. Thermal Considerations:

   • The device includes thermal shutdown protection which activates at approximately 160掳C. Ensure adequate heat dissipation if operating near maximum current or in high ambient temperatures.

4. Noise Reduction:

   • For optimal performance, place a bypass capacitor (typically 0.1渭F) close to the VDD pin to reduce noise and improve stability.

5. Load Regulation:

   • The load regulation is very tight (0.01%), ensuring stable output voltage even with varying load conditions from 0 to 200mA.

6. Line Regulation:

   • The line regulation is also tight (0.01%), providing a stable output voltage over the entire input voltage range from 4.5V to 5.5V.

7. Dropout Voltage:

   • The dropout voltage is low, typically around 0.5V at 100mA, allowing efficient operation even when the input voltage is close to the output voltage.

8. PSRR (Power Supply Rejection Ratio):

   • At 1kHz, the PSRR is 70dB, effectively rejecting ripple and noise from the power supply.

Ensure all connections are secure and double-check polarity before applying power to avoid potential damage to the component.

(For reference only)