STOD2540PUR Datasheet, PDF (1/20 Pages) STMicroelectronics – PMOLED display power supply

STOD2540
PMOLED display power supply
Features
■ Inductor switches boost controller
■ PFM mode control
■ High efficiency over wide range of load (1 mA
to 40 mA)
■ 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 3.0 V to 5.5 V
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. STOD2540 is a
boost converter that operates from 3.0 V to 5.5 V
and can provide an output voltage as high as 25
V. The output current capability is maximum 40
mA up to 25 V output voltage. The regulation is
performed by a resistor divider network (figure 3)
that detects the output voltage.
QFN8 (3 x 3 mm)
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)
act as an isolation switch in shutdown mode.
Table 1.
Device summary
Order code
STOD2540PUR
July 2010
Package
QFN8 (3 x 3 mm)
Doc ID 12204 Rev 10
Packaging
3000 parts per reel
1/20
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