LP5524_16 Datasheet, PDF (1/19 Pages) Texas Instruments – LP5524 Parallel LED Driver With PWM Brightness Control in DSBGA Package

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LP5524
SNVS500B – JULY 2007 – REVISED JUNE 2016
LP5524 Parallel LED Driver With PWM Brightness Control in DSBGA Package
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
V_IN
VIN
I_DX = 25 mA max
D1A
ENA
D2A
LP5524
ENB
D1B
R_ISET
(optional)
ISET
D2B
GND
Copyright © 2016, Texas Instruments Incorporated
1
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.