August 2011

Doc ID 018980 Rev 1

1/16

16

STODD03

Monolithic 2-channel power management

for high-definition ODD with integrated power switch

Features

mA load

Description

The STODD03 is a 2-channel power

management device intended for Blu-Ray

applications based on high density optical storage

devices. It integrates one step-down converter

able to provide 3.3 V fixed output voltage up to

700 mA load, and one step-up converter to

provide the power supply needed for the blue

laser in applications where only 5 V input voltage

is available. The step-up output voltage is

adjustable in the range from 6.5 V to 14 V, with

current capability up to 500 mA. Both step-down

channel and P-channel MOSFETs, allowing high

DC-DC efficiencies. The enable function with true

shutdown makes the step-up section particularly

suitable for optical storage power management

applications. Moreover, the STODD03 has a 1 A

integrated power switch for motor control power

supply. The high switching frequency allows the

use of tiny SMD components. Low output ripple

voltage is achieved thanks to the current mode

PWM topology. The device includes soft-start

control, thermal shutdown, and peak current limit

to prevent damage due to accidental overload.

The STODD03 is packaged in a QFN16 (4 x 4

mm).

QFN16L (4 x 4 mm)

Table 1.

Device summary

Part number

Order code

Marking

Package

STODD03

STODD03PQR

ODD03

QFN16 (4 x 4 mm)

www.st.com