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TPS715: Output Voltage Programming

Part Number: TPS715

Hi Team,

I'm using the TPS71501 generate a 5-V output from a 12-V supply and the load current is about 5 mA.

When calculating the resistances of the resistor divider, I found something that contradicts each other.

1. Using the table in Figure 13, R1 and R2 should be 3.16 Mohm and 1 Mohm, respectively.

2. Using Equation (3) yields R1 = 6.29 Mohm when R2 = 1 Mohm.

Since the two results are quite different, could you please clarify which we should follow?


Roy Hsu