LM2767

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SNVS069D – FEBRUARY 2000 – REVISED AUGUST 2015

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The LM2767 provides a simple and efficient means of creating an output voltage level equal to twice that of the

input voltage. Without the need of an inductor, the application solution size can be reduced versus the magnetic

DC-DC converter solution.

9.2 Typical Application

The main application of the LM2767 is to double the input voltage. The range of the input supply voltage is 1.8 V

to 5.5 V.

Figure 10. LM2767 Typical Application

9.2.1 Design Requirements

For typical switched-capacitor voltage converter applications, use the parameters listed in Table 1.

Table 1. Design Parameters

DESIGN PARAMETER

EXAMPLE VALUE

Minimum input voltage

1.8 to 5.5 V

Output current (minimum)

15 mA

Switching frequency

11 kHz (typical)

9.2.2 Detailed Design Procedure

9.2.2.1 Positive Voltage Doubler

Figure 11. Voltage Doubling Principle

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