Details

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BUY LD1085-25 https://www.utsource.net/itm/p/12608693.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Output Voltage	Vout	-	2.5	2.5	2.5	V
Input Voltage Range	Vin	-	4.5	-	30	V
Output Current	Iout	-	-	1.5	1.5	A
Quiescent Current	Iq	Vin = 30V, Vout = 2.5V	-	10	15	mA
Dropout Voltage	Vdo	Iout = 1.5A	-	1.2	2.0	V
Line Regulation	ΔVout/ΔVin	Iout = 1.5A, Vin from 4.5V to 30V	-	0.01	0.02	%
Load Regulation	ΔVout/ΔIout	Vin = 30V, Iout from 0 to 1.5A	-	0.01	0.02	%
Thermal Shutdown	TSD	-	-	160	170	°C
Operating Temperature	Topr	-	-40	-	125	°C
Storage Temperature	Tstg	-	-65	-	150	°C

Instructions for Using LD1085-25

1. Circuit Design:

   • Ensure that the input voltage is within the specified range (4.5V to 30V).
   • Use appropriate input and output capacitors to stabilize the regulator. Recommended values are 10μF for the input and 10μF for the output.
   • Place the capacitors as close as possible to the regulator to minimize noise and improve stability.

2. Thermal Management:

   • The LD1085-25 can dissipate significant power, especially at higher input voltages and output currents. Ensure adequate heat sinking to keep the junction temperature below 160°C.
   • Use a heatsink with sufficient thermal resistance to handle the power dissipation. The power dissipation can be calculated using the formula: ( P_D = (V_ - V_) times I_ ).

3. Output Voltage Adjustment:

   • The output voltage of the LD1085-25 is fixed at 2.5V and does not require external resistors for adjustment.

4. Transient Response:

   • The regulator has good transient response, but for applications with rapid load changes, consider adding additional bypass capacitors or using a higher value for the output capacitor.

5. Protection Features:

   • The LD1085-25 includes overcurrent and thermal shutdown protection to prevent damage under fault conditions. However, it is still important to design the circuit to avoid these conditions as much as possible.

6. Mounting:

   • Mount the regulator on a PCB with proper clearance to avoid short circuits. Ensure that the leads are soldered securely to the board.

7. Testing:

   • Before finalizing the design, test the regulator under various operating conditions to ensure it meets the required performance specifications. Check for stability, output voltage accuracy, and thermal behavior.

(For reference only)