Product category:
Power Supply ICs and Controllers
News Release from: Seiko Instruments | Subject: S-8532 series
Edited by the Electronicstalk Editorial
Team on 17 July 2001
High-efficiency regulators cut PSU power
drain
Seiko Instruments is claiming an efficiency as high as 94% for its S-8532 series of step-down (buck) switching regulator controllers.
Seiko Instruments is claiming an efficiency as high as 94% for its S-8532 series of step-down (buck) switching regulator controllers This is 3-10% higher than conventional step-down switching regulators, which translates into longer battery life for portable devices
This article was originally published on Electronicstalk on 30 Mar 2001 at 8.00am (UK)
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Due to the high oscillation frequency of 300kHz, smaller external components can be used, further benefiting the design engineer.
A high-current step-down switching regulator can be created by the addition of a P-channel and an N-channel power mosfet, a coil and three capacitors.
The small and thin 8-pin TSSOP and SON packaging allows the S-8532 to be best used in a wide range of applications, such as MP3 players, cellular phones, digital cameras, notebook PCs, PDAs, handheld games, home security and portable audio devices.
The S-8532 also includes a reference voltage source, oscillation circuit, an error amplifier, phase compensation circuit and PWM control circuit.
Other features include an input voltage ranging from 2.7 to 16.0V, an output voltage of 1.5 to 6.0V, in 0.1V steps, a soft-start function, a current-limiting circuit and a power-off function.
Pricing begins at $1.06 and $1.18 in quantities of 10K for the TSSOP packaging and SON packaging, respectively.
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