Details

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BUY LC08A https://www.utsource.net/itm/p/12608311.html

Parameter	Description	Value
Part Number	LC08A	-
Type	Low Dropout Linear Regulator	-
Input Voltage	Operating Range	2.5V to 5.5V
Output Voltage	Fixed Output Voltage	1.8V, 2.5V, 3.3V
Output Current	Maximum Continuous Output Current	800mA
Dropout Voltage	Typical at 500mA	120mV
Quiescent Current	Shutdown Mode	1渭A
Quiescent Current	Active Mode	30渭A
Load Regulation	10mA to 800mA	卤1%
Line Regulation	Over Full Input Range	卤1%
PSRR (Power Supply Rejection Ratio)	@ 1kHz	70dB
Operating Temperature	Storage and Operation	-40掳C to +85掳C
Package	SOT-223, TO-252	-
Protection	Short-Circuit and Thermal Shutdown	Yes

Instructions for Use:

1. Input Capacitor:

   • Place a ceramic capacitor of at least 1渭F close to the input pin to ensure stability and reduce noise.
   • For better performance, use a 10渭F tantalum or ceramic capacitor.

2. Output Capacitor:

   • Use a ceramic capacitor of at least 1渭F on the output to maintain stability.
   • A larger capacitor (e.g., 10渭F) can be used to improve transient response and reduce output ripple.

3. Thermal Considerations:

   • Ensure adequate heat sinking if the regulator is expected to dissipate significant power.
   • The maximum power dissipation can be calculated using the formula: ( P_ = (V_ - V_) times I_ ).

4. Layout Guidelines:

   • Keep the traces from the input and output capacitors as short as possible to minimize inductance.
   • Place the regulator and its associated components on the same side of the PCB to reduce parasitic effects.

5. Shutdown Function:

   • If the shutdown feature is used, apply a logic low to the SHDN pin to turn off the regulator.
   • The quiescent current in shutdown mode is typically 1渭A.

6. Overvoltage Protection:

   • Do not exceed the maximum input voltage of 5.5V to avoid damaging the device.
   • Ensure that the input voltage is always higher than the output voltage to prevent reverse current flow.

7. Short-Circuit Protection:

   • The LC08A includes internal short-circuit protection, which will limit the output current and shut down the regulator if overheating occurs.
   • After a short circuit, the regulator will automatically restart once the fault condition is removed and the temperature returns to normal.

(For reference only)