Electronic Design

Tiny PMICs Control SSDs

Destined to power all the supply rails in solid state drives (SSDs), hybrid drives, and other flash-memory management applications, the LM10504, LM10503, and LM10506 power management integrated circuits (PMICs) include a power-saving deep sleep mode, built-in current limit and thermal protection, and power-down data protection. They integrate three programmable 2.25-MHz dc/dc step-down converters with 95% peak efficiency that support core processor, memory and I/O voltages, along with a general-purpose, 3V/250-mA low-dropout regulator for host controller reference. The LM10504 and LM10506 also include power-down data protection that ensures that the SSD controller completes the writing operation during unexpected power failure. The LM10504 is a flexible PMIC for use in a variety of large and small, client, and consumer SSD form factors including 3.5-inch, 2.5-inch, 1.8-inch, mSATA, Micro SATA, Half-Slim SATA, mini PCIe and integrated SSD. The LM10503 is a higher current, 2A PMIC designed for power-hungry controllers used in enterprise SSDs. The LM10503 features the National PowerWise adaptive voltage scaling technology from TI for reducing the power consumption of SSD controllers and increasing system power efficiency. The LM10506 is the smallest PMIC designed for ultra-portable applications in space-constrained, client and consumer SSDs including mSATA, Half-Slim SATA, mini PCIe and integrated SSD. The LM10504 and LM10506 PMICs are offered in a 34-pin micro SMD package measuring 2.8 mm x 2.8 mm with a 0.4-mm pitch. Price is $1.90 and $1.60 each/1,000, respectively. The LM10503 is offered in a 36-pin LLP measuring 6 mm x 6 mm and is priced at $3.90 each/1,000. TEXAS INSTRUMENTS INC., Dallas, TX. (800) 477-8924.

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