FB

EN

VIN

VCON

SW

2.7V to 5.5V

0.4V to 3.6V

10 PF

4.7 PF

PGND

0.5 PH

LM3242

BPEN

SGND

DAC

GPO1

LM3242

SNOSB48E – OCTOBER 2011 – REVISED AUGUST 2015

www.ti.com

8 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.

8.1 Application Information

8.1.1 Setting The Output Voltage

The LM3242 features a pin-controlled adjustable output voltage to eliminate the need for external feedback

resistors. It can be programmed for an output voltage from 0.4 V to 3.6 V by setting the voltage on the VCON

pin, as in Equation 1:

(1)

When VCON is between 0.16 V and 1.44 V, the output voltage will follow proportionally by 2.5 times of VCON.

more detail. This curve exhibits the characteristics of a typical part, and the performance cannot be ensured as

converter might suffer from larger output ripple voltage and higher current limit operation.

8.1.2 FB

8.2 Typical Application

Figure 23. LM3242 Typical Application

16

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