STW4410_LF| Datasheet

STW4410_LF, STW4410T_LF, STw4410

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STw4410
2 Step down DC/DC converter/4 LDO/MMC interface power management
Data Brief

Features

2 Step-down converters Vsdc1: 1 to 1.5 V with 15 steps at 650 mA, and 1.2, 1.3, 1.4 & 1.5 V by ball programming Vsdc2: 1.8 V at 600 mA for general purpose usage 4 Low-drop output regulators for different uses Vdig: 1.0, 1.2, 1.5 - 250 mA, supplied by Vsdc2 Vana1: 1.5, 1.8, 2.5, 2.8 V - 150 mA Vana2: 1.5, 1.8, 2.5, 2.8 V - 150 mA Vana3: 1.5, 1.8, 2.5, 2.8 V - 150 mA Mass memory cards (SD/MMC/SDIO) Vmmc: 1.8, 2.5, 2.85, 3 V - 150mA Level shifters Miscellaneous 32 kHz control for processor Processor supply monitoring Processor reset control Serial I2C interface Thermal shutdown, thermal interruption warning for processor Clock squarer for master clock

STw4410T/LF TFBGA 84 6x6x1.2mm 0.5mm pitch STw4410/LF VFBGA 84 4.6x4.6x1.0mm 0.4mm pitch

The high level of the dynamic performances allows to use the product to supply all processors used mobile phone or in multimedia platform, furthermore, the output voltage programming of Vsdc1 SMPS converter allows to use this power management unit with all actual processors. The second SMPS has been designed with a fixed voltage of 1.8V that can be used to supply a wild range of external devices as memory devices for instance. The four LDO's can supply all the peripheral devices that can be used on a multimedia platform like audio or TV out devices for example. Vdig is a high current capability LDO and it is supplied by the Vsdc2 SMPS to reduce the power dissipation. This product has also embedded MMC level shifters and the associated LDO to be used to address the MMC card. Soft-start procedure had been embedded in the device managing the internal clock and the start of the different voltage of the DC/DC regulators. OTG programming could be done to change the power supply start timing to let customer the fle
xibility needed in their applications. STw4410 has got an internal clock that can be used to switch the SMPS without any external clock. The STw4410 typical applications are imaging processor, application processor supply solutions, mobile phones, personal digital assistants (PDA).

Description
STw4410 is a power management device with advanced features. The two Switched Mode Power Supplies (SMPS) and the four Low Drop Output regulators (LDO) had been designed to use the better external components, to have the better efficiency and the better noise rejection to the load and line transient perturbation. This product suits well all mobile applications thanks to its very low consumption in sleep mode.

December 2006

Rev 1

1/3
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