DIA7976

Version 1.9, Apr 2025

www.dioo.com

© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

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10.Application Information

Important notice: Validation and testing are the most reliable ways to confirm system functionality. The

application information is not part of the specification and is for reference purposes only.

10.1.Application examples

Figure 22. Typical application: adjustable voltage

Figure 23. Typical application: fixed voltage

10.2.Adjustable device feedback resistors

Figure 22 shows that the output voltage of the DIA7976 can be adjusted from 0.55 V to 5.5 V by using a resistor

divider network.

The adjustable version DIA7976 requires external feedback divider resistors to set the output voltage. The

feedback divider resistors, R1 and R2 set the VOUT, according to the following equation:

VOUT = VFB × (1 + R1/R2)

(2)

Setting the feedback divider current to 100x the FB pin current listed in the Electrical Characteristics table can

ignore the FB pin current error term in the VOUT equation, which provides the maximum feedback divider series

resistance, as shown in the following equation:

R1 + R2 ≤ VOUT / (IFB × 100)

(3)