Details

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BUY UCC28700DBVR https://www.utsource.net/itm/p/12612178.html

Parameter	Symbol	Min	Typ	Max	Unit
Input Voltage Range	V_IN	9	-	100	V
Switching Frequency	f_SW	50	132	200	kHz
Start-Up Current	I_START	40	-	100	μA
Operating Supply Current	I_SUPPLY	1.2	-	2.5	mA
Maximum Duty Cycle	D_MAX	-	88	-	%
UVLO Threshold (Rising)	V_UVLO_R	16.5	-	-	V
UVLO Threshold (Falling)	V_UVLO_F	14.5	-	-	V
OVP Threshold	V_OVP	-	430	-	V
Thermal Shutdown Temperature	T_SHDN	-	160	-	°C
Storage Temperature Range	T_STOR	-40	-	125	°C

Instructions for UCC28700DBVR

1. Input Voltage (V_IN):

   • The device operates within an input voltage range of 9V to 100V. Ensure the input voltage is within this range to avoid damage or improper operation.

2. Switching Frequency (f_SW):

   • The switching frequency can be adjusted between 50kHz and 200kHz. The typical operating frequency is 132kHz. Use external components to set the desired frequency.

3. Start-Up Current (I_START):

   • The device requires a start-up current between 40μA and 100μA. Ensure the power supply can provide this current during start-up.

4. Operating Supply Current (I_SUPPLY):

   • The operating supply current ranges from 1.2mA to 2.5mA. Ensure the power supply can maintain this current during normal operation.

5. Maximum Duty Cycle (D_MAX):

   • The maximum duty cycle is 88%. Do not exceed this value to prevent overloading the switch.

6. UVLO Thresholds (V_UVLO_R, V_UVLO_F):

   • The device has UVLO thresholds of 16.5V (rising) and 14.5V (falling). If the input voltage drops below the falling threshold, the device will shut down to protect itself.

7. OVP Threshold (V_OVP):

   • The overvoltage protection (OVP) threshold is set to 430V. If the output voltage exceeds this threshold, the device will shut down to prevent damage.

8. Thermal Shutdown Temperature (T_SHDN):

   • The device will shut down if the internal temperature exceeds 160°C to prevent thermal damage. Ensure proper heat dissipation and cooling.

9. Storage Temperature Range (T_STOR):

   • The device can be stored in temperatures ranging from -40°C to 125°C. Avoid exposing the device to temperatures outside this range for extended periods.

10. Handling and Installation:

    • Handle the device with care to avoid static discharge and physical damage. Follow standard ESD precautions.
    • Ensure all connections are secure and correctly soldered to prevent intermittent operation or damage.

11. Application Notes:

    • Refer to the datasheet and application notes for detailed information on specific applications and circuit design considerations.

(For reference only)