Features • SPMI bus for system-level power management • High-efficiency PowerWise ® Technology Adaptive Voltage Scaling for intelligent energy management in AVS and DVS environments • Two digitally programmable 3.6 MHz buck regulators to power dual voltage domains • Five Programmable LDOs for system functions such as: • PLL/Clock Generation • I/O • Memory Retention • Internal soft start • Variable regulator power up sequencing. Description The LP5553 is a System Power Management Interface (SPMI) compliant Energy Management Unit for reducing power consumption of low power hand held applications such as dual-core processors and DSPs. The LP5553 contains 2 advanced, digitally controlled step-down DC/DC converters for supplying variable voltages to a SoC. The device also incorporates 5 programmable low-dropout, low noise linear regulators for powering I/O, peripheral logic blocks, auxiliary system functions, and maintaining memory retention (dual-domain) in shutdown-mode. The LP5553 implements 2 Non-Request Capable Slaves that are controlled via the SPMI. The LP5553 operates cooperatively with PowerWise ® AVS technology compatible processors to optimize supply voltages adaptively (AVS - Adaptive Voltage Scaling) over process and temperature variations. It also supports dynamic voltage scaling (DVS) using frequency/voltage pairs from pre-characterized look-up tables. Key Specification Programmable DC/DC Buck Converters Programmable LDOs • 2.7 to 4.8V Input Voltage Range • ±2% (typical) Output Voltage Range • 800 mA Output Current per DC/DC Converter • Up to 88% Efficiency • Digitally Programmable from 0.6 to 1.235V • Five digitally programmable LDOs Applications • GSM/GPRS/EDGE & UMTS cellular handsets • Hand-held radios • PDAs • Battery powered devices • Portable instruments

LP5553 System Block Diagram MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application *click for larger image LP5553 System Block Diagram	Connection Diagram click for larger image Chip view, top-down

Datasheet

Title		Size	Date	Other Language
	LP5553 PowerWise ® AVS Energy Management Unit with SPMI	3801 Kbytes	5-Mar-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1857: Application Note 1857 LP5553 Evaluation Kit	3940 Kbytes	25-Mar-09

More Application Notes

Title		Size	Date	Other Language
	AN-1653: Application Note 1653 User's Graphical User Interface(GUI) for LP555x Evaluation Board PowerWise™ Technology Compliant Energy Management Unit	1675 Kbytes	7-Jun-07
	AN-1460: Application Note 1460 Emulating the PowerWise Interface Using GPIOs and Software	448 Kbytes	12-Apr-06
	AN-1610: Application Note 1610 LP5552 Evaluation Board	10829 Kbytes	20-May-08
	AN-1467: Application Note 1467 LP5551 Evaluation Board	32843 Kbytes	8-Jun-07	日本語

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LP5553TL	CMOS7	0	18406	0	0	1089000	4	309006723
LP5553TLX	CMOS7	0	18406	0	0	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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