LP5524

ENA

VIN

ISET

D2B

GND

ENB

D1B

D2A

D1A

(optional)

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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.

LP5524

SNVS500B – JULY 2007 – REVISED JUNE 2016

LP5524 Parallel LED Driver With PWM Brightness Control in DSBGA Package

1

1 Features

1

•

Wide Input Voltage Range: 2.7 V to 5.5 V

•

High-Side LED Driver

•

Drives Four LEDs With up to 25 mA per LED

•

0.4% Typical Current Matching

•

PWM Brightness Control

•

Overcurrent Protection

•

Fast Transient Response

•

Optional External ISET Resistor

•

Ultra-Small Solution Size:

–

No External Components

–

9-Pin DSBGA Package with 0.4-mm pitch:

–

1.24 mm × 1.24 mm × 0.6 mm (L × W × H)

2 Applications

•

Sub-Display Backlight

•

Keypad LED Backlight

•

Indicator LED

3 Description

The LP5524 device is a highly integrated dual-zone

LED driver that can drive up to four LEDs in parallel

with a total output current of 100 mA. Regulated high-

side internal current sources deliver excellent current

and brightness matching in all LEDs.

The LP5524 provides overcurrent protection and

pulse-width

modulation

(PWM)

control

of

four

indicator

LEDs

without

the

need

for

external

components.

LED

driver

current

sources

are

split

into

two

independently controlled banks for driving secondary

displays, keypad and indicator LEDs. Brightness

control is achieved by applying PWM signals to each

enable

pin.

Default

LED

current

is

factory-

programmable and an optional external resistor can

be used to set LED current to user programmable

values.

The LP5524 is available in a tiny, 9-pin, thin DSBGA

package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP5524

DSBGA (9)

1.21 mm × 1.21 mm

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

the end of the data sheet.

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Simplified Schematic