Details

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BUY LB1923 https://www.utsource.net/itm/p/12541421.html

Below is the parameter table and instructions for the LB1923 IC:

Parameter Table

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	Vcc	-	4.5	-	5.5	V
Output Current	Iout	Continuous	-	100	150	mA
Quiescent Current	Iq	No load	-	20	40	μA
Shutdown Current	Isd	Vsd = 0V	-	0.1	1	μA
Operating Temperature	Topr	-	-40	-	85	°C
Storage Temperature	Tstg	-	-65	-	150	°C
Thermal Resistance	θja	Free air	-	200	-	°C/W
Maximum Junction Temp	Tjmax	-	-	-	150	°C
Input Voltage Range	Vin	-	0	-	5.5	V
Output Voltage Range	Vout	-	0	-	5.5	V
Dropout Voltage	Vdo	Iout = 100mA	-	0.3	0.5	V
Line Regulation	ΔVout/ΔVin	Iout = 100mA	-	0.01	0.02	%/V
Load Regulation	ΔVout/ΔIout	Vin = 5V	-	0.01	0.02	%/mA
Ripple Rejection	RR	10Hz to 100kHz	-	70	80	dB

Instructions

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the range of 4.5V to 5.5V.
   • Use a stable power source to avoid fluctuations that could affect performance.

2. Output Current:

   • The maximum continuous output current (Iout) is 150mA, but it is recommended to operate at or below 100mA for optimal performance and longevity.

3. Quiescent Current:

   • The quiescent current (Iq) is typically 20μA with no load. This value can increase slightly under load conditions.

4. Shutdown Mode:

   • To put the device into shutdown mode, set the shutdown pin (Vsd) to 0V. The shutdown current (Isd) is typically 0.1μA.

5. Operating Temperature:

   • The operating temperature range (Topr) is from -40°C to 85°C. Ensure the device is used within this range to avoid thermal stress.

6. Storage Temperature:

   • Store the device in an environment where the temperature ranges from -65°C to 150°C.

7. Thermal Management:

   • The thermal resistance (θja) in free air is 200°C/W. Ensure adequate heat dissipation if the device is expected to operate at high output currents or in high ambient temperatures.

8. Input and Output Voltage:

   • The input voltage (Vin) should be within the range of 0V to 5.5V.
   • The output voltage (Vout) will be regulated to a stable value within the same range.

9. Dropout Voltage:

   • The dropout voltage (Vdo) is the minimum difference between the input and output voltages required to maintain regulation. It is typically 0.3V at 100mA output current.

10. Regulation:

    • The line regulation (ΔVout/ΔVin) and load regulation (ΔVout/ΔIout) are both very low, ensuring stable output voltage over a wide range of input voltages and load currents.

11. Ripple Rejection:

    • The ripple rejection (RR) is 70dB to 80dB, effectively filtering out noise from the input supply.

12. Mounting and Handling:

    • Handle the device with care to avoid static discharge and physical damage.
    • Follow standard soldering procedures to ensure proper mounting on the PCB.

By following these parameters and instructions, you can ensure reliable and efficient operation of the LB1923 IC.

(For reference only)