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Hello,

Uber simple question regarding ADP2302. What is the actual voltage output range when Vin is 12 VDC?

Looking over the datasheet on page 17, it seems to suggest that Vout can be up to 15 VDC. However, all of the example schematics seem to have max Vout of 5 VDC.

Can ADP2302  support Vout = 6 VDC (when Vin = 12 VDC)?

Would any special considerations need to be taken for 6 VDC, or can I use the recommend values for Vout=5VDC with exception to the program resistors?

For example, use the below layout but with Cout1 = Cout2 = 22uF rated for >=10VDC

Rtop = 65k

Rbottom = 10k

Thank you very much for your help.

-James

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• Hello James,

the ADP2302 can support 6V with 12V Vin. The maximum Vout depends on following parameters:

Vin,min

Frequency, max

Minimum Offtime, max

A rough calculation is as follows:

max DutyCycle is (1/Frequency-Toff.min)/(1/Frequency)

Vout max=Dutycyle,max*Vin,min

Figure 47 on page 17 resembles this relation/equation.

You should check for thermals as higher Vout results in higher Pout and higher losses.

• Hello James,

the ADP2302 can support 6V with 12V Vin. The maximum Vout depends on following parameters:

Vin,min

Frequency, max

Minimum Offtime, max

A rough calculation is as follows:

max DutyCycle is (1/Frequency-Toff.min)/(1/Frequency)

Vout max=Dutycyle,max*Vin,min

Figure 47 on page 17 resembles this relation/equation.

You should check for thermals as higher Vout results in higher Pout and higher losses.

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