Switching Regulator controls power for PDAs.

Press Release Summary:

Single-coil S-8460 PWM combination buck and boost switching regulator-controller is suitable for single-cell Lithium-Ion devices such as PDAs, cell phones, notebook PCs and power supply modules. It includes automatic-selection control circuit, reference voltage source, oscillation circuit and error amplifier. Regulator has variable output voltage, wide input voltage range, 300 kHz oscillation frequency, and automatic recovery overload protection.

Original Press Release:

Seiko Introduces Single-Coil PWM Combination Buck And Boost Switching Regulator-Controller

Torrance, CA, December 3, 2001 . Seiko Instruments introduces a PWM buck and boost switching regulator-controller that is ideal for portable devices. The S-8460 is a high-efficiency switching regulator-controller that requires only one coil instead of two. This allows for a reduction in external components and board space while the high efficiency of the S-8460 will help prolong battery life. It also includes an automatic-selection control circuit, a reference voltage source, an oscillation circuit and an error amplifier. Applications for the S-8460 include single-cell Lithium-Ion devices such as PDAs, cell phones, notebook PCs and power supply modules that require a battery and AC adapter.

Features of the S-8460 include a variable output voltage (2.5 V to 6.0 V), a wide input voltage range (2.2 V to 18.0 V), an oscillation frequency of 300 kHz and an automatic recovery overload protection circuit. The S-8460 comes in a 16-pin TSSOP package.

Pricing for the S-8460 begins at $1.75 in quantities of 10K and is available now through a national network of authorized distributors, including All American, Mouser and Future Electronics.


Seiko Instruments' semiconductor technology originated with the integrated circuits used in Seiko watches. This application demands ultra-low power consumption coupled with precision performance, high processing accuracy and top quality. Seiko Instruments has adapted this basic CMOS technology to create a line of standard products for energy management. These ICs feature the lowest current consumption available to give the longest battery life, or the most energy efficient operation for line operated equipment. Seiko Instruments is totally committed to providing the highest quality semiconductors to enhance the value of its customers' end products. Seiko Instruments' IC products include: Switching Regulators, Voltage Detectors, Mini Logic ASSPs, Low DropOut (LDO) Voltage Regulators, Timer ASSPs, Sensors and Low Voltage E2PROMs.

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