STOD30TPQR [STMICROELECTRONICS]

300 mA triple DC-DC converter for powering AMOLED display;


型号：	STOD30TPQR
厂家：	ST
描述：	300 mA triple DC-DC converter for powering AMOLED display
文件：	总8页 (文件大小：239K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

STOD30

300 mA triple DC-DC converter for powering AMOLED display

Data brief

• Temperature range -40 °C to 85 °C

• True shutdown mode

• Fast outputs discharge after shutdown

• Short-circuit protection

• Package QFN 3.5x3.5 18 leads, 0.5 mm pitch

Applications

QFN18 3.5x3.5 mm

• Active matrix OLED power supply in portable

devices

Features

• Cellular phones, multimedia players,

camcorders and digital cameras

• Two step-up converters and an inverting

converter

Description

• Operating input voltage range from 2.5 V to

4.5 V

The STOD30 is a triple DC-DC converter for

AMOLED display panel. It integrates 300 mA

step-up and inverting DC-DC converters plus

auxiliary step-up converter. This device is

particularly suitable for battery operated products,

in which the major concern is the overall system

efficiency. It works in pulse skipping mode during

low load condition and PWM mode at 1.45 MHz

frequency for medium/high load conditions. The

high frequency allows the value and size of

external components to be reduced. The enable

and SWIRE pins allow the device to be turned off

so to reduce the current consumption to less than

1 μA. The negative inverter and auxiliary step-up

positive output voltages can be programmed by

an MCU through a dedicated pin which

• Synchronous rectification for all DC-DC

converters

• 300 mA output current for step-up and inverting

converters (V_IN> 2.9 V)

• 60 mA output current for auxiliary step-up

converter

• Step-up converter fixed 4.6 V positive voltage

• Programmable negative voltage by S_WIREfrom

-1.4 V to -5.4 V in 100m V steps

• Greater than 90% efficiency

• Pulse skipping mode at light load condition

• 1.45 MHz PWM mode control switching

frequency

implements S_WIREprotocol. Auxiliary step-up

positive output voltage is also configured by an

external pull-down resistor. Soft-start with

controlled inrush current limit, thermal shutdown

and short-circuit protection are integrated

functions of the device.

• TDMA noise high immunity

• Auxiliary step-up converter positive voltage

programmable by S_WIREfrom 6.7 V to 7.6 V in

300 mV steps and configurable by external

pull-down resistor

• Enable pin for auxiliary step-up converter

shutdown mode

Table 1. Device summary

• Low quiescent current in shutdown mode

• Soft-start with inrush current protection

• Overtemperature protection

Order code

Package

Packaging

QFN18 3.5x3.5

3000 parts per

reel

STOD30TPQR

January 2014

DocID025751 Rev 1

1/8

For further information contact your local STMicroelectronics sales office.

www.st.com

Pin configuration

STOD30

Pin configuration

Figure 1. Pin configuration (top view)

Table 2. Pin description

Description

Pin name

VINP

VO3

Power input voltage pin

Aux. step-up output voltage pin

Aux. step-up switching pin

Power ground

LX3

PGND2

PGND1

LX1

Power ground

Step-up switching pin

Step-up output voltage pin

Feedback sense

VO1

FBS

AGND

VINA

VREF

SEL_VO3

SWIRE

EN_VO3

Analog Ground

Analog input voltage pin

Reference voltage pin

Aux. step-up output voltage select pin

SWIRE pin

Aux. step-up enable pin

Not connected

Fast Discharge configuration pin

Inverter output voltage pin

Inverter switching pin

VO2

LX2

To guarantee proper operation of the device exposed pad must be

connected to ground layers on the PCB

EXPPAD

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STOD30

Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK^®packages, depending on their level of environmental compliance. ECOPACK^®

specifications, grade definitions and product status are available at: www.st.com.

ECOPACK^®is an ST trademark.

DocID025751 Rev 1

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Package mechanical data

STOD30

Figure 2. QFN18 3.5x3.5x0.55 pitch 0.5 mm drawing

8374718_A

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STOD30

Package mechanical data

Table 3. QFN18 3.5x3.5x0.55 pitch 0.5 mm mechanical data

Dim.

Min.

Typ.

Max.

0.51

0.00

0.18

0.55

0.02

0.25

3.50

2.14

0.50

0.40

0.60

0.05

0.30

1.99

2.24

0.30

0.20

0.50

aaa

bbb

ccc

ddd

eee

0.05

0.10

0.05

0.08

DocID025751 Rev 1

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Package mechanical data

STOD30

Figure 3. QFN18 3.5x3.5x0.55 pitch 0.5 mm recommended footprint ^(a)

Footprint_8374718_A

a. All dimensions are in millimeters

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Revision history

Table 4. Document revision history

Date

Revision

Changes

07-Jan-2014

Initial release.

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STOD30

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