LP5523 datasheet(1/61 Pages) TI2

Teilenummer	LP5523

Bauteilbeschribung	LP5523 Nine-Channel RGB- and White-LED Driver With Internal Program Memory and Integrated Charge Pump – DSBGA Package

PDF	61 Pages

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Hersteller	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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LP5523

D1

D2

D4

D7

VOUT

COUT

1 µF

C2

0.47 µF

ASEL0

ASEL1

GND

MCU

SCL

SDA

EN

CLK

TRIG

INT

CIN

1 µF

VIN = 2.7 V TO 5.5 V

VDD

C1

0.47 µF

C1+ C1- C2+ C2-

GPO

B

G

R

D3

D8

B

G

R

B

G

R

D6

D5

D9

LP5523

D2

D3

D1

VOUT

COUT

1 µF

ASEL0

ASEL1

GND

MCU

SCL

SDA

EN

CLK

TRIG

INT

CIN

1 µF

VIN = 2.7 V TO 5.5 V

VDD

C1+ C1- C2+ C2-

GPO

D6

D5

D4

D9

D8

D7

RGB LED

APPLICATION

WLED APPLICATION

NOTE: D7, D8 AND D9 POWERED

DIRECTLY FROM VIN

C2

0.47 µF

C1

0.47 µF

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LP5523

SNVS550E – SEPTEMBER 2009 – REVISED JANUARY 2017

LP5523 Nine-Channel RGB- and White-LED Driver With Internal

Program Memory and Integrated Charge Pump – DSBGA Package

1

1 Features

1

•

Three Independent Program Execution Engines,

Nine Programmable Outputs with 25.5-mA Full-

Scale Current, 8-Bit Current Setting Resolution,

and 12-Bit PWM Control Resolution

•

Adaptive High-Efficiency 1×/1.5× Fractional

Charge Pump - Efficiency Up to 94%

•

LED Drive Efficiency Up to 93%

•

Charge Pump With Soft Start and Overcurrent and

Short-Circuit Protection

•

Built-in LED Test

•

200-nA Typical Standby Current

•

Automatic Power-Save Mode

IVDD = 10 µA (Typical)

•

Two-Wire I2C-Compatible Control Interface

•

Flexible Instruction Set

•

Large SRAM Program Memory

•

Small Application Circuit

•

Source (High-Side) Drivers

•

Architecture Supports Color Control

2 Applications

•

Fun Lights and Indicator Lights

•

LED Backlighting

•

Haptic Feedback

•

Programmable Current Source

3 Description

The LP5523 is a 9-channel LED driver designed to

produce lighting effects for mobile devices. A high-

efficiency charge pump enables LED driving over full

Li-Ion battery voltage range. The device is equipped

with an internal program memory, which allows

operation without processor control.

The LP5523 maintains excellent efficiency over a

wide operating range by autonomously selecting the

best charge-pump gain based on LED forward

voltage

requirements.

The

LP5523

is

able

to

automatically enter power-save mode when LED

outputs are not active, thus lowering idle current

consumption down to 10 µA (typical).

The LP5523 has an I2C-compatible control interface

with four pin selectable addresses. The device has a

flexible general purpose output (GPO), which can be

used as a digital control pin for other devices. INT pin

can be used to notify processor when a lighting

sequence has ended (interrupt function). Also, the

device has a trigger input interface, which allows

synchronization,

for

example,

between

multiple

LP5523 devices.

The device requires only four small, low-cost ceramic

capacitors. The LP5523 is available in a tiny 25-pin

DSBGA package (0.4-mm pitch).

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP5523

DSBGA (25)

2.26 mm × 2.26 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application

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