LED171596ARSLR datasheet(145/153 Pages) TI1

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LED171596A

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SNVSAY2 – OCTOBER 2017

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Typical Application (continued)

8.2.1 Design Requirements

The following design guideline provides a component selection to operate the device within the recommended

operating conditions.

Table 282. List of Components

REFERENCE

DESCRIPTION

PART NUMBER

MANUFACTURER

96-Channel LED Driver, QFN

LED171596A

Texas Instruments

CVLED

CAP, CERM, 10 µF, 10 V

C0805C106K8RACTU

Kemet

CVDD

CAP, CERM, 10 µF, 6.3 V

C1608JB0J106K080AB

TDK

RISET

RES, 12.4k, 1%, 0.1 W, 0603

CRCW060312K4FKEA

Vishay-Dale

8.2.2 Detailed Design Procedure

The default value of LEDXX_CUR[7:0] registers is 0xCC or 80% of peak current. Using this value the required

RISET value for 2.48 mA average LED current is shown in Table 283.

Table 283. RISET Example Calculation

ISET (mA)

RISET

CALCULATED

(kΩ)

RISET STANDARD

VALUE

(kΩ)

LEDXX_CUR

PEAK ILED CURRENT

(mA)

AVERAGE ILED

CURRENT

(mA)

60.4

0xCC

9.93

2.48

8.2.3 Application Curves

Figure 301. High Side Switch Sequence

Figure 302. HS0 to HS1 Transition

LED171596ARSLR Datasheet(PDF) 145 Page - Texas Instruments

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