Content
Introduction
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Display power supply
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Battery management
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Point of load
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LDOs
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Introduction
High integration combined with a broad IP portfolio, a complete system
competence and state-of-the-art technology
ST is a leading supplier of power management and mixed-signal ICs for handheld and wearable
applications, offering a wide range of products from simple power management ICs up to highly-
integrated devices that mix power management blocks with advanced analog and digital functionality.
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TARGET APPLICATIONS
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Smartphones and other slim-line
electronics
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Handheld consoles
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Smart watches
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Wearables and fitness devices
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Tablet PCs
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Medical portable equipment
Display
power supply
ST supplies over 70% of the world’s ICs used to power AMOLED displays that enable today’s advanced
handheld devices to deliver high-quality web and video experiences on the move.
ST’s dedicated AMOLED power ICs add value to new designs by simplifying power-supply circuitry.
DC-DC converters are produced using ST’s innovative BCD process technology, which ensures
outstanding energy efficiency and results in longer battery life. In addition, high immunity to cellphone
communication noise keeps displays consistent and flicker-free.
Boost + Inverter
+ Aux boost
Boost + Inverter
Boost + LDO
+ Inverter
Boost + LDO
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STOD32W
STOD32A
STOD30
STOD13AS
STOD13CM
STOD03B
STOD1317B
150 mA
170 mA
200 mA
250 mA
300 mA
Iout
HIGHLIGHTS
STOD32A
The STOD32A, our most recent and innovative chip, is particularly well-suited for battery-operated products with display panels up to 6 inches.
Thanks to its high efficiency and very low ripple levels, this triple DC-DC converter satisfies the continuous demand for energy saving, noise
immunity in smaller application areas.
On a single chip, the STOD32A integrates a 300 mA step-up and an inverting DC-DC converter needed to generate the positive and negative
supplies to power the AMOLED display, as well as an auxiliary step-up converter to provide the supply voltage for the source driver IC.
STOD32W
The STOD32W has the same architecture of the STOD32A, optimizing performance (system efficiency, noise immunity, etc...) in a lower output
current range (100 mA max.) with a smaller package size (12-bump chip-scale package) thus making this device perfectly suitable for wearable
devices with displays up to 3 inches.
KEY FEATURES
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Advanced silicon-on-insulator
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High output voltage accuracy
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Low output ripple
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High immunity to GSM noise
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User-programmable negative
KEY bENEFITS
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Increased battery lifetime
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Simplified power-supply circuitry
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Flicker-free displays
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Meet needs for growing AMOLED
manufacturing technology
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Synchronous rectification
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PFM/PWM operation for best-in-class
efficiency (up to 93%)
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High frequency (1.6 MHz) for the
output voltage
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Dynamic transistor control to optimize
panel sizes
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Improved picture quality
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Increased ruggedness and reliability
smallest application areas
efficiency under any load condition