Details

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BUY L290B https://www.utsource.net/itm/p/12610582.html

Parameter	Symbol	Min	Typical	Max	Unit
Supply Voltage	Vcc	4.5	-	30	V
Quiescent Current	Iq	-	10	-	mA
Output Current (Continuous)	Iout	-	100	200	mA
Output Current (Peak)	Ipeak	-	300	-	mA
Dropout Voltage	Vdo	1.2	-	2.0	V
Thermal Shutdown Temperature	TSD	-	150	-	掳C
Operating Junction Temperature	Tj	-40	-	125	掳C
Storage Temperature	Tstg	-65	-	150	掳C

Instructions for Using L290B

1. Supply Voltage:

   • Ensure the supply voltage is within the range of 4.5V to 30V.
   • Avoid exceeding the maximum voltage to prevent damage to the device.

2. Quiescent Current:

   • The quiescent current is typically 10mA. This is the current drawn by the device when no load is connected.

3. Output Current:

   • The continuous output current should not exceed 200mA. For peak currents, the device can handle up to 300mA.
   • Ensure proper heat dissipation if operating at high currents to avoid thermal shutdown.

4. Dropout Voltage:

   • The dropout voltage is between 1.2V and 2.0V. This is the minimum difference between the input and output voltages required for the regulator to function correctly.

5. Thermal Shutdown:

   • The device will shut down if the junction temperature exceeds 150掳C to protect against overheating.
   • Use a heatsink or ensure adequate ventilation to maintain safe operating temperatures.

6. Operating and Storage Temperatures:

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

7. Circuit Design:

   • Place the L290B close to the load to minimize voltage drops and noise.
   • Use bypass capacitors (typically 0.1渭F and 10渭F) near the input and output pins to filter out noise and stabilize the output.

8. Safety Precautions:

   • Always follow proper handling and soldering procedures to avoid damaging the device.
   • Use appropriate protective equipment when working with electrical components.

(For reference only)