LM3535

D1A D2A D3A D4A

D53

I

2C

Control

Signals

D1B/

INT

SDIO

1µF

1µF

1µF

1µF

GND

D62

C1+

C1-

C2+

C2-

SCL

D1C/

ALS

HWEN

GROUP A

GROUP B

GROUP C

PWM

O

R

VIO

VIN

VOUT

19

LM3535

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SNVS598B – AUGUST 2010 – REVISED MARCH 2018

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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

8.2 Typical Application

The LM3535 device is a highly integrated LED driver capable of driving 8 LEDs in parallel for large display

applications. Independent LED control allows selection of a subset of the 6 main display LEDs for partial-

illumination applications. In addition to the main bank of 6, the LM3535 is capable of driving an additional 2

independently controlled LEDs to support Indicator applications.

Figure 29. LM3535 Typical Application

8.2.1 Design Requirements

A detailed design procedure is described based on a design example. For this design example, use the

parameters listed in Table 3 as the input parameters.

Table 3. Design Example Parameters

DESIGN PARAMETER

VALUE

Input voltage VIN

2.7 V to 5.5 V

LED current maximum per channel

25 mA

Operating frequency

1.33 MHz