STW4510 Datasheet, PDF (1/57 Pages) STMicroelectronics – 2 step-down DC/DC converters / 5 LDO power management

STw4510
2 step-down DC/DC converters / 5 LDO power management
Preliminary Data
Features
■ 2 Step-down converters
– Vsdc1: 1 to 1.5 V with
. 15 steps at 600 mA (I2C control available)
. Programmable start-up value
(1.2V by default)
– Vsdc2: 1.8 V at 600 mA for general
purpose usage
■ 5 Low-drop output regulators for different uses
t(s) – Vdig: 1.0V (100mA), 1.2V, 1.5V (250 mA)
. Can be supplied by Vsdc2 to minimize the
c _{voltage drop}
u _{. Programmable start-up value}
rod ^{(1.2V by default)}
– Vana1: 1.5, 1.8, 2.5, 2.8 V - 150 mA
P _{– Vana2: 1.8, 2.8, 3.0, 3.3 V - 150 mA}
te _{– Vana3: 1.8, 2.8, 3.0, 3.3 V - 150 mA}
le _{– Vmmc: 1.8, 2.5, 2.85, 3.0 V - 150mA}
so _{■ Miscellaneous}
b _{– Vana(i) have programmable start-up output}
O _{voltage and ON or OFF (default) status}
) ^{- – 32 kHz input used for state machine}
t(s ^{– Processor supply monitoring}
c ^{– Processor reset control}
u _{– Control by serial I2C interface}
rod ^{– Thermal shutdown}
P _Applications
lete ^{■ Any portable application}
o _{– Mobile phones}
bs^{– Personal digital assistants (PDA)}
O ^{– Portable media players}
TFBGA84 6 mm x 6 mm x 1.2 mm 0.5 mm pitch
TFBGA49 4 mm x 4 mm x 1.2 mm 0.5 mm pitch
Description
STw4510 is a 7-channel integrated power
management device for application powered by
one Li-Ion or Li-Polymer cell. STw4510 embeds 2
highly efficient step-down DC/DC converters and
5 LDO regulators.
It has been designed to typically supply portable
processor and its peripherals. Thanks to the
multiple output voltages, high current capability
and programmable start-up value, it can easily
adapt to various applications.
March 2008
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
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