Details

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BUY LT1529CQ-5 https://www.utsource.net/itm/p/12444356.html

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Input Voltage	VIN	3	-	40	V	Continuous operating range
Output Voltage	VOUT	-	5.0	-	V	Fixed output voltage
Output Current	IOUT	-	1.5	-	A	Maximum continuous output current
Quiescent Current	IQ	-	70	-	渭A	Quiescent current at full load
Dropout Voltage	VDROPOUT	-	1.2	-	V	Dropout voltage at IOUT = 1.5A
Line Regulation	-	-	0.01	-	%/V	Line regulation over input voltage range
Load Regulation	-	-	0.05	-	%/A	Load regulation from 0 to 1.5A
Ripple Rejection	-	-	70	-	dB	At 1kHz
Operating Temperature	TJ	-40	-	125	掳C	Junction temperature range
Storage Temperature	TSTG	-65	-	150	掳C	Storage temperature range
Thermal Resistance (胃JA)	-	-	80	-	掳C/W	Junction-to-ambient thermal resistance (TO-220 package)

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 3V to 40V.
   • Use appropriate input filtering capacitors to reduce ripple and noise.

2. Output Voltage (VOUT):

   • The LT1529CQ-5 provides a fixed output voltage of 5.0V.
   • Use an output capacitor to stabilize the output and reduce ripple.

3. Output Current (IOUT):

   • The maximum continuous output current is 1.5A.
   • Ensure the power supply can handle the required current and heat dissipation.

4. Quiescent Current (IQ):

   • The quiescent current is 70渭A at full load, which helps in maintaining efficiency even at low loads.

5. Dropout Voltage (VDROPOUT):

   • The dropout voltage is 1.2V at IOUT = 1.5A. Ensure the input voltage is at least 1.2V higher than the output voltage to maintain regulation.

6. Line and Load Regulation:

   • The line regulation is 0.01%/V, and the load regulation is 0.05%/A. These parameters ensure stable output voltage under varying input and load conditions.

7. Ripple Rejection:

   • The device has a ripple rejection of 70dB at 1kHz, which helps in reducing output noise.

8. Temperature Considerations:

   • The operating junction temperature range is -40掳C to 125掳C.
   • The storage temperature range is -65掳C to 150掳C.
   • Use appropriate heat sinking if operating at high temperatures or high currents.

9. Thermal Management:

   • The thermal resistance (胃JA) is 80掳C/W for the TO-220 package. Ensure adequate cooling to prevent overheating.

10. Capacitor Selection:

    • Use ceramic or tantalum capacitors for input and output filtering.
    • For the output capacitor, a value of 10渭F to 100渭F is typically recommended.

11. PCB Layout:

    • Keep the input and output capacitors close to the device to minimize parasitic inductance.
    • Use wide traces for power paths to reduce resistance and heating.

12. Protection Features:

    • The device includes internal short-circuit and thermal overload protection to prevent damage under fault conditions.

(For reference only)