STW4410 [STMICROELECTRONICS]
2 Step down DC/DC converter/4 LDO/MMC interface power management; 2降压DC / DC转换器/ LDO 4 / MMC接口电源管理
| 型号： | STW4410 |
| 厂家： | 
ST |
| 描述： | 2 Step down DC/DC converter/4 LDO/MMC interface power management |
| 文件： | 总4页 (文件大小：113K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
34ꢀ.80 7IRELESS
IMPORTANT NOTICE
Dear customer,
nd
As from August 2 2008, the wireless operations of STMicroelectronics have moved to a
new company, ST-NXP Wireless.
As a result, the following changes are applicable to the attached document.
●
●
Company name - STMicroelectronics NV is replaced with ST-NXP Wireless.
Copyright - the copyright notice at the bottom of the last page “© STMicroelectronics
200x - All rights reserved”, shall now read: “© ST-NXP Wireless 200x - All rights
reserved”.
●
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Web site - http://www.st.com is replaced with http://www.stnwireless.com
Contact information - the list of sales offices is found at http://www.stnwireless.com
under Contacts.
If you have any questions related to the document, please contact our nearest sales office.
Thank you for your cooperation and understanding.
ST-NXP Wireless
34ꢀ.80 7IRELESS
www.stnwireless.com
STw4410
2 Step down DC/DC converter/4 LDO/MMC interface
power management
Data Brief
Features
STw4410T/LF
■ 2 Step-down converters
TFBGA 84
6x6x1.2mm
0.5mm pitch
– 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
STw4410/LF
VFBGA 84
4.6x4.6x1.0mm
0.4mm pitch
– 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
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.
– 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
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.
■ Miscellaneous
– 32 kHz control for processor
– Processor supply monitoring
– Processor reset control
– Serial I2C interface
– Thermal shutdown, thermal interruption
warning for processor
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.
– Clock squarer for master clock
This product has also embedded MMC level
shifters and the associated LDO to be used to
address the MMC card.
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.
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
flexibility needed in their applications. STw4410
has got an internal clock that can be used to
switch the SMPS without any external clock.
This product suits well all mobile applications
thanks to its very low consumption in sleep mode.
The STw4410 typical applications are imaging
processor, application processor supply solutions,
mobile phones, personal digital assistants (PDA).
December 2006
Rev 1
1/3
For further information contact your local STMicroelectronics sales office.
www.st.com
3
Block diagram
STw4410
Block diagram
Figure 1.
STw4410 block diagram
Ordering information
Table 1.
Order codes
Part number(1)
Package
STw4410T/LF
STw4410/LF
TFBGA84
VFBGA84
1. Specific programming of OTP parameters are possible, for OTP customization, contact your ST local sale
representative
Revision history
Table 2.
Document revision history
Date
Revision
Changes
22-Dec-2006
1
Initial release.
2/3
STw4410
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3/3
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