DIU6931

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DIU6931• V1.1

Typical Application

Application Information

The DIU6931 is a synchronous buck regulator IC that integrates the COT control, top and bottom switches on

the same die to minimize the switching transition loss and conduction loss. With ultra low RDS(ON) power

switches and proprietary COT control, this regulator IC can achieve the highest efficiency and the highest

switch frequency simultaneously to minimize the external inductor and capacitor size, and thus achieving the

minimum solution footprint.

Because of the high integration in the DIU6931 IC, the application circuit based on this regulator IC is rather

simple. Only input capacitor CIN, output capacitor COUT, output inductor L1 and feedback resistors (R1 and R2)

need to be selected for the targeted applications specifications.

Feedback resistor dividers R1 and R2

Choose R1 and R2 to program the proper output voltage. To minimize the power consumption under light

loads, it is desirable to choose large resistance values for both R1 and R2. A value of between 10kΩ and 1MΩ

is highly recommended for both resistors. If VOUT is 3.3 V, R1 = 40.2 kΩ is chosen, then R2 can be calculated

to be 12 kΩ.

R2 =

1

OUT

R

0.765V

V

0.765V



(1)