LP5526TLSLASHNOPB datasheet(8/41 Pages) TI1

No de pièce	LP5526TL/NOPB

Description	Lighting Management Unit With High-Voltage Boost Converter With up to 150-mA Serial Flash LED Driver

PDF	41 Pages

Scroll/Zoom	100%

Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

Logo

8 / 41 page

VDD1,2

VDDIO

VDD

VDDIO

STANDBY

RESET

INTERNAL

STARTUP

SEQUENCE

NRST = L

or POR = H

EN_BOOST = H*

TSD = H

~10 ms Delay

BOOST STARTUP

NSTBY = H and

NRST = H

NSTBY = L and

NRST = H

EN_BOOST = L*

~20 ms Delay

NORMAL MODE

EN_BOOST

rising edge*

* TSD = L

VREF = 95% OK*

NSTBY = L

and NRST = H

LP5526

SNVS431D – FEBRUARY 2006 – REVISED MARCH 2013

www.ti.com

Power-Up Sequence

When powering up the device, VDD1 and VDD2 should be greater than VDDIO to prevent any damage to the device.

Magnetic Boost DC/DC Converter

The LP5526 Boost DC/DC Converter generates an 8…20V supply voltage for the LEDs from single Li-Ion battery

(3V…4.5V). The output voltage is controlled with an 8-bit register in 12 steps. The converter is a magnetic

switching PWM mode DC/DC converter with a current limit. Switching frequency is 1MHz, when timing resistor

RT is 82k

Ω. Timing resistor defines the internal oscillator frequency and thus directly affects boost frequency and

RGB timings.

Submit Documentation Feedback

Product Folder Links: LP5526

LP5526TL/NOPB Fiches technique(PDF) 8 Page - Texas Instruments

LP5526TL/NOPB Fiches technique(HTML) 8 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

Fiches technique Télécharger

Lien URL