Details

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BUY BA2549R https://www.utsource.net/itm/p/12606358.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	2.7	-	5.5	V
Output Voltage	VOUT	-	3.3	-	V
Output Current	IOUT	-	100	250	mA
Quiescent Current	IQ	-	20	-	渭A
Dropout Voltage	VDROP	-	300	-	mV
Shutdown Current	ISD	-	0.1	-	渭A
Operating Temperature	TOP	-40	-	85	掳C
Storage Temperature	TSTG	-40	-	125	掳C
Thermal Resistance	胃JA	-	65	-	掳C/W

Instructions for Use:

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V. Exceeding this range can damage the device.

2. Output Voltage (V_OUT):

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

3. Output Current (I_OUT):

   • The device can provide up to 250mA of output current, with a typical output current of 100mA. Ensure the load does not exceed the maximum current rating.

4. Quiescent Current (I_Q):

   • The quiescent current is typically 20渭A. This is the current consumed by the regulator when it is active but not supplying any load.

5. Dropout Voltage (V_DROP):

   • The dropout voltage is typically 300mV. This is the minimum difference between the input and output voltages required to maintain regulation.

6. Shutdown Current (I_SD):

   • When the shutdown pin is activated, the device consumes only 0.1渭A of current.

7. Operating Temperature (T_OP):

   • The device is designed to operate within a temperature range of -40掳C to 85掳C. Avoid operating outside this range to prevent damage or reduced performance.

8. Storage Temperature (T_STG):

   • Store the device in an environment with a temperature range of -40掳C to 125掳C to ensure its longevity.

9. Thermal Resistance (胃_JA):

   • The thermal resistance from junction to ambient is typically 65掳C/W. Ensure proper heat dissipation if the device is expected to operate at high power levels or in high-temperature environments.

10. Mounting:

    • Solder the device onto a PCB with adequate copper area for heat dissipation. Follow recommended PCB layout guidelines to ensure optimal performance.

11. Capacitors:

    • Use a 1渭F ceramic capacitor on the input side and a 1渭F ceramic capacitor on the output side to stabilize the regulator and filter noise. Place these capacitors as close as possible to the regulator.

12. Shutdown Pin:

    • To enable the shutdown function, connect the shutdown pin to ground. To keep the regulator active, leave the shutdown pin open or connect it to the input voltage.

13. Polarity:

    • Ensure correct polarity when connecting the input and output pins. Reversing the polarity can damage the device.

(For reference only)