Details

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BUY SM5158AP https://www.utsource.net/itm/p/12606894.html

Parameter	Symbol	Condition	Min	Typ	Max	Unit
Input Voltage	VIN	-	2.7	-	5.5	V
Output Voltage	VOUT	-	3.3	-	-	V
Output Current	IOUT	-	-	100	300	mA
Quiescent Current	IQ	VIN = 3.3V, VOUT = 3.3V	-	40	60	μA
Shutdown Current	ISD	VIN = 3.3V, SHDN = 0V	-	0.1	1	μA
Dropout Voltage	VDROPOUT	IOUT = 300mA, VIN = 3.3V	-	0.3	0.5	V
Load Regulation	ΔVOUT/ΔIOUT	IOUT = 0 to 300mA	-	0.5	1.5	%
Line Regulation	ΔVOUT/ΔVIN	VIN = 2.7V to 5.5V	-	0.1	0.3	%
PSRR (Power Supply Rejection Ratio)	PSRR	f = 1kHz	-	60	80	dB
Operating Temperature Range	TOPR	-	-40	-	85	°C
Storage Temperature Range	TSTG	-	-65	-	150	°C

Instructions for Using the SM5158AP

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Do not exceed the maximum input voltage to avoid damaging the device.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 3.3V. No external components are required to set this voltage.

3. Output Current (IOUT):

   • The device can provide a continuous output current of up to 300mA.
   • For currents exceeding 300mA, consider using additional cooling or a higher-rated regulator.

4. Quiescent Current (IQ):

   • The quiescent current is typically 40μA and can go up to 60μA under normal operating conditions.

5. Shutdown Current (ISD):

   • When the shutdown pin (SHDN) is pulled low (0V), the device enters a low-power mode with a typical shutdown current of 0.1μA.

6. Dropout Voltage (VDROPOUT):

   • The dropout voltage is the minimum difference between the input and output voltages required to maintain regulation.
   • At a load current of 300mA, the dropout voltage is typically 0.3V and can go up to 0.5V.

7. Load Regulation:

   • The change in output voltage due to changes in load current should be less than 1.5%.

8. Line Regulation:

   • The change in output voltage due to changes in input voltage should be less than 0.3%.

9. PSRR (Power Supply Rejection Ratio):

   • The device has a high PSRR of 60dB to 80dB at 1kHz, which helps in filtering out noise from the input supply.

10. Operating Temperature Range (TOPR):

    • The device can operate within a temperature range of -40°C to 85°C.

11. Storage Temperature Range (TSTG):

    • The device can be stored in temperatures ranging from -65°C to 150°C.

12. Application Notes:

    • Use appropriate decoupling capacitors (typically 1μF ceramic) on both the input and output sides to ensure stability.
    • Place the capacitors as close as possible to the device to minimize parasitic inductance.
    • If the device is used in a high-temperature environment, ensure adequate heat dissipation to prevent thermal overload.

(For reference only)