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March 2002

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DUAL INPUT VOLTAGE (12V AND 5V)

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TRIPLE OUTPUT VOLTAGE (2.6V, 3.3V, 8V)

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THERMAL AND SHORT CIRCUIT

PROTECTION

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GUARANTEED OPERATING

TEMPERATURE RANGE (0°C to 125°C)

DESCRIPTION

This device contains three voltage regulators, all

fixed output voltage, in one 7 pin surface mount

package. The first is a 2.6 V regulator to power the

integrated controller/µP. The second is a 3.3V

regulator to power the read channel chip, and

memory chips requiring 3.3V The last is an 8V

regulator to power the preamp chip. The bandgap

reference, the 8V ground, and the substrate are all

tied to a common ground pin, while the 2.6V and

3.3V ground is tied to a separate ground pin.This

grounding scheme allows for improved noise

isolation between the 8V regulator and the 2.6V

and 3.3V regulators.The 2.6V and 3.3V regulators

shall be respectively capable of 1.0A and 1.2A.

The 8V regulator shall be capable of 200mA.

It is housed in the SPAK (PowerFlex

™)

ST3L01

TRIPLE VOLTAGE REGULATOR

SCHEMATIC DIAGRAM

SPAK-7L

(PowerFlex