Details

---

BUY LM1950T https://www.utsource.net/itm/p/12612374.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	V_IN	-	4.5	7	40	V
Output Voltage	V_OUT	-	5	5	5	V
Output Current	I_OUT	-	0	1	1.1	A
Quiescent Current	I_Q	V_IN = 5V	0.8	1.5	2.5	mA
Dropout Voltage	V_DROPOUT	I_OUT = 1A	0.6	1.5	2.5	V
Thermal Shutdown	T_SHUTDOWN	-	150	-	-	掳C
Operating Temperature	T_OP	-	-40	25	125	掳C
Storage Temperature	T_STG	-	-65	-	150	掳C

Instructions for Use

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 4.5V to 40V.
   • Avoid exceeding the maximum input voltage to prevent damage to the device.

2. Output Voltage (V_OUT):

   • The output voltage is fixed at 5V. No external components are required to set this voltage.

3. Output Current (I_OUT):

   • The device can provide up to 1.1A of output current.
   • For continuous operation, do not exceed 1A to ensure reliability and avoid overheating.

4. Quiescent Current (I_Q):

   • The quiescent current is the current consumed by the regulator when there is no load.
   • It typically ranges from 0.8mA to 2.5mA depending on the input voltage.

5. Dropout Voltage (V_DROPOUT):

   • The dropout voltage is the minimum difference between the input and output voltages required to maintain regulation.
   • At full load (1A), the dropout voltage is typically 1.5V but can range from 0.6V to 2.5V.

6. Thermal Shutdown (T_SHUTDOWN):

   • The device will automatically shut down if the temperature exceeds 150掳C to prevent damage.
   • Ensure adequate heat dissipation to keep the device within safe operating temperatures.

7. Operating Temperature (T_OP):

   • The device is designed to operate within the temperature range of -40掳C to 125掳C.
   • Avoid exposing the device to temperatures outside this range.

8. Storage Temperature (T_STG):

   • When not in use, store the device in an environment with temperatures ranging from -65掳C to 150掳C.

Additional Notes:

• Capacitors:
  • Use a 10渭F tantalum or ceramic capacitor on the input side and a 10渭F tantalum or ceramic capacitor on the output side to ensure stability.
• PCB Layout:
  • Place the input and output capacitors as close as possible to the device to minimize noise and improve transient response.
• Heat Sinking:
  • If the device is expected to dissipate significant power, consider using a heatsink to improve thermal performance.

(For reference only)