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STOD2540PMR

PMOLED display power supply

STMicroelectronics 

STOD2540

PMOLED display power supply

Feature summary

■ Inductor switcher boost controller.

■ PFM mode control.

■ High efficiency over wide range of load (1mA to

40mA).

■ Integrated Load disconnect switch.

■ Over voltage protection with automatic restart

■ Soft start with adjustable peak current limit

■ Enable pin

■ Low shutdown current.

■ Small external inductor.

■ Supply voltage from 3.0V to 5.5V

Application

■ PMOLED display driver

Description

STOD2540 is dedicated to Passive Matrix OLED

(PMOLED) displays for portable handsets and

provides the pre-charge and biasing voltage of

the column matrix driver as shown in Figure 3.

The current capability of STOD2540 allows

feeding a 1", 1.3" or 1.5" color PMOLED.

QFN8 (3mm x 3mm)

STOD2540 is a boost converter that operates

from 3.0V to 5.5V and can provide an output

voltage as high as 25V. The output current

capability is maximum 40mA up to 25V output

voltage. The regulation is performed by a resistor

divider network (Figure 3.) that detects the output

voltage.

In this state-of-the-art boost converter, a DC

current path exists between the battery source

and the load. In order to reduce the consumption

in Shutdown mode, a high-side load isolation

switch is necessary to cut this DC current path in

Standby mode. The Load Disconnect Switch

(LDS) actsas an isolation switch in Shutdown

mode.

Order codes

Part number

STOD2540PMR

September 2006

Package

QFN8 (3mm x 3mm)

Rev. 5

Packaging

4500 parts per reel

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