STODD01 datasheet(1/31 Pages) STMICROELECTRONICS

部件名	STODD01

功能描述	Synchronous rectification

PDF	31 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 31 page

February 2011

Doc ID 17789 Rev 2

1/31

31

STODD01

Monolithic power management for high definition ODD with true

shut-down, reset, and programmable step-up voltage

Features

■ 1.2 MHz DC-DC current mode PWM converter

■ Dual step-down of up to 800 mA

■ Single step-up of up to 700 mA

■ 2 % DC output voltage tolerance for step-down

■ 3 % DC output voltage tolerance for step-up

■ Programmable step-up output voltage by S-

WIRE

■ Synchronous rectification

■ Power save mode at light load for step-down

■ Typical efficiency: > 90 %

■ Internal soft start with controlled inrush current

■ Reset function

■ Enable function for step-up

■ True cut-off function for step-up

■ Low switching quiescent current: max 2.2 mA

overtemperature range

■ Uses tiny capacitors and inductors

■ Available in QFN16 (4 x 4 mm.)

Description

The STODD01 is a complete power management

for Blu-Ray, based on high density optical storage

devices. It integrates two step-down converters

and one step-up. The step-down converters are

optimized for powering low-voltage digital core, up

to 0.8 A, in ODD applications and, generally, to

replace the high current linear solution when

power dissipation may cause a high heating of the

application environment. The step-up provides

the necessary voltage to supply the blue laser in

mobile applications where only 5 V is available.

The output voltage is programmable by using the

S-Wire protocol, in the range of 6.5 V to 14 V, with

a current capability of 0.7 A. The integrated low

RDSon for N-channel and P-channel MOSFET

switches contribute to obtaining high efficiency.

The enable function for the step-up section, and

reset function for monitoring the input voltage,

make the device particularly suitable for optical

storage applications. The high switching

frequency (1.2 MHz typ.) allows the use of tiny

surface mounted components. Furthermore, a low

output ripple is achieved by the current mode

PWM topology and by the use of X7R or X5R low

ESR SMD ceramic capacitors. The device

includes soft-start control, thermal shutdown, and

peak current limit, to prevent damage due to

accidental overload. The STODD01 is packaged

in QFN16 (4 x 4 mm.).

QFN16L (4 x 4 mm.)

Table 1.

Device summary

Part number

Order code

Marking

Package

STODD01

STODD01PQR

ODD01

QFN16 (4 x 4 mm.)

www.st.com

类似零件编号 - STODD01

制造商	部件名	数据表	功能描述
STMicroelectronics	STODD03	612Kb / 16P	Monolithic 2-channel power management for high-definition ODD with integrated power switch August 2011 Rev 1
STMicroelectronics	STODD03PQR	612Kb / 16P	Monolithic 2-channel power management for high-definition ODD with integrated power switch August 2011 Rev 1

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