Synchronous Step-Down Controllers suit 12 V applications.

Press Release Summary:

Available in 10-pin MSOP package, Models SP6134 and SP6137 offer frequencies of 600 and 900 kHz, respectively, and include all provisions for loop stability and soft-start. PWM architecture drives dual NFET switches with efficiencies up to 94%. Controllers feature programmable output voltage down to 0.8 V and maintain 1.5% accuracy over wide range of line, load, and temperature conditions. Internal 2 A gate drivers provide load current capability to 15 A.

Original Press Release:

Sipex Expands 12V Synchronous Controller Family

(Milpitas, CA - December 15, 2003) - Sipex Corporation (NASDAQ: SIPX), a leading provider of high performance, analog integrated circuits (ICs), today introduced the SP6134 and SP6137, two new high power, high efficiency, synchronous step-down controllers for 12V applications.

Extending Sipex's family of 12V solutions, these devices reduce external component size by offering higher frequency operation of 600KHz for the SP6134 and 900KHz for the SP6137.

Similar to the recently announced SP6132, the SP6134 and SP6137 are available in a MSOP package and include all provisions for loop stability and soft-start, making them the cost effective choice for a broad range of applications including graphics cards, telecom equipment, and other 12V distributed power systems.

The two devices utilize a highly efficient PWM architecture that drives dual NFET switches with efficiencies as high as 94%. They feature a programmable output voltage range down to 0.8V and maintain 1.5% accuracy over a wide range of line, load, and temperature conditions. Internal 2A gate drivers provide load current capability of up to 15A.

SP6134 & SP6137 Key Features (typical):
o 12V Input Range
o 600KHz Operation: SP6134
o 900KHz Operation:SP6137
o Up to 15A capability
o High Efficiency: Up to 94%
o 10-Pin MSOP Package
o Under Voltage Lockout
o Programmable Soft Start
o Short Circuit Protection
o Fast Transient Response

Pricing and Availability
The SP6134 and SP6137 are available over the commercial 0°C to 70°C temperature range in a MSOP package. Pricing begins at $1.50 for the SP6134 and $1.75 for the SP6137 each in 1000 piece quantities. Samples and evaluation boards are also available to assist in the evaluation of the devices.

About Sipex Power Management Product Line
Power management ICs deliver key benefits to portable power and distributed power applications, providing better power efficiency, increased miniaturization and more power at lower voltage levels. This product group includes Low Drop Out linear regulators, DC to DC switching regulators, PWM controllers, charge pumps, and microprocessor supervisors. In 2002, Sipex expanded its power management product line with a new family of white LED drivers needed in virtually every consumer portable device. Applications for the Sipex power products include personal computers and peripherals, battery powered hand-held devices such as PDAs and cellular telephones, and data communications products.

About Sipex
Sipex Corporation is a semiconductor company that designs, manufactures and markets high performance, value-added analog integrated circuits (ICs). Sipex serves the broad analog signal processing market with interface, power management and optical storage ICs for use in computing, communications, and networking infrastructure markets. The company is headquartered in Milpitas, California with additional offices in Belgium, China, Germany, Japan, South Korea and Taiwan. Sipex sells direct and through distribution channels. For more information about Sipex, visit

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