Features • High side LED driver • Drives 4 LEDs with Up to 25mA per LED • Ultra-Small Solution Size: • No External Components • Micro SMD-9 Package with 0.4 mm pitch: 1.215mm x 1.215mm x 0.6mm (LxWxH) • 0.4% Typical Current Matching • PWM Brightness Control • Over-Current Protection • Wide Input Voltage Range: 2.7V to 5.5V Description The LP5524 is a highly integrated dual-zone LED driver that can drive up to four LEDs in parallel with a total output current of 100mA. Regulated high side internal current sources deliver excellent current and brightness matching in all LEDs. 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. LP5524 is available in National’s tiny 9-bump thin micro SMD package. Applications • Sub display Backlight • Keypad LED Backlight • Indicator LED

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Datasheets

Title		Size	Date	Other Language
	LP5524 Parallel LED Driver with PWM Brightness Control in Micro SMD Package	223 Kbytes	19-Jul-07

Featured Application Notes

Title		Size	Date	Other Language
	AN-1702: AN-1702 LP5524 Evaluation Kit	491 Kbytes	17-Mar-08

More Application Notes

Title		Size	Date	Other Language
	AN-1632: AN-1632 LP5521TM Evaluation Kit	2062 Kbytes	16-Jan-09
	AN-1502: AN-1502 LP5526 Evaluation Kit	2362 Kbytes	12-Mar-07
	AN-1636: AN-1636 LP5522 Evaluation Kit	1568 Kbytes	13-Jun-07	中文
	AN-1523: AN-1523 LP5521 Power Efficiency Considerations	5526 Kbytes	17-Apr-08	中文
	AN-1562: AN-1562 LP5521 Programming Considerations	761 Kbytes	17-Apr-08
	AN-1442: Application Note 1442 Design and Programming Examples for Lighting Management Unit LP5526	749 Kbytes	26-Jan-07	中文

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LP5524TM-5/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 299 NEWARK Americas 495 RS COMPONENTS Worldwide 220	$0.65 each at 1K+ pcs	reel of 250
LP5524TMX-5/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.65 each at 1K+ pcs	reel of 3000

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

CAD Symbols and Models Download LP5524 CAD Symbols

Models N/A