STEVAL-TLL013V1 STMICROELECTRONICS [STMicroelectronics], STEVAL-TLL013V1 Datasheet

STEVAL-TLL013V1

Manufacturer Part Number

STEVAL-TLL013V1

Description

5-channel (2 LEDs in series per channel) step-up white LED driver demonstration board based on the STLED25

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheet

1.STEVAL-TLL013V1.pdf (4 pages)

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Features

■

Description

The STEVAL-TLL013V1 demonstration board

was designed to demonstrate the performance of

the STLED25, a fixed frequency, high-efficiency,

boost DC-DC converter with five parallel high-side

current sources.

The STLED25 is able to provide 125 mA of total

current with a maximum voltage of 7.5 V on each

channel.

Each current source supports single or dual LED

connections. The output voltage of the step-up

converter is automatically set at 100 mV above

the highest voltage required on any driver to

guarantee the proper operation of the linear

current sources. The device implements a self-

test feature to detect any failure of the LEDs and

to disable the related channel.

The failure status is reset as soon the IC is

disabled. This mode of failure detection allows the

device to continue operating driver channels that

are operating normally, while avoiding excessive

power consumption or associated thermal issues.

September 2011

For further information contact your local STMicroelectronics sales office.

Operating input voltage range from 2.3 V to

5.5 V

± 7.5% LED current accuracy

Two LEDs in series per channel

High-side current source

Up to 125 mA of total LED current

86% efficiency at 100 mA

PWM dimming with automatic shutdown time

window

2.5 MHz switching frequency

RoHS compliant

5-channel (2 LEDs in series per channel) step-up white LED

driver demonstration board based on the STLED25

Doc ID 022250 Rev 1

STEVAL-TLL013V1

www.st.com

Data brief

1/4

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STEVAL-TLL013V1 Summary of contents

Page 1

... MHz switching frequency ■ RoHS compliant Description The STEVAL-TLL013V1 demonstration board was designed to demonstrate the performance of the STLED25, a fixed frequency, high-efficiency, boost DC-DC converter with five parallel high-side current sources. The STLED25 is able to provide 125 mA of total current with a maximum voltage of 7 each channel ...

Page 2

... Schematic circuit Figure 1. Application schematic Table 1. Typical external components Component OUT L R SET 1. For 20 mA per branch. 2/4 Manufacturer Part number Murata GRM155R60J155M Murata GRM219R61A116U Samsung CIG21K4R7SCE Doc ID 022250 Rev 1 STEVAL-TLL013V1 Value Size 1.5 µF 0402 10 µF 0805 4.7 µH 0805 ( 0402 ...

Page 3

... STEVAL-TLL013V1 2 Revision history Table 2. Document revision history Date 21-Sep-2011 Revision 1 Initial release. Doc ID 022250 Rev 1 Revision history Changes 3/4 ...

Page 4

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 4/4 Please Read Carefully: © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 022250 Rev 1 STEVAL-TLL013V1 ...

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