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TPS650531

更新时间： 2024-10-14 12:04:47
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德州仪器 - TI 转换器
页数 文件大小 规格书
27页 1205K
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5-CHANNEL POWER MGMT IC WITH TWO STEP DOWN CONVERTERS

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TPS650531 数据手册

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TPS65053  
TPS650531  
TPS650532  
www.ti.com ............................................................................................................................................. SLVS754C–MARCH 2007–REVISED SEPTEMBER 2009  
5-CHANNEL POWER MGMT IC WITH TWO STEP DOWN CONVERTERS  
AND 3 LOW-INPUT VOLTAGE LDOs  
1
FEATURES  
•
•
•
•
One General-Purpose 400-mA LDO  
Two General-Purpose 200-mA LDOs  
VIN Range for LDOs from 1.5 V to 6.5 V  
Output Voltage for LDO3:  
2
•
Up To 95% Efficiency  
•
Output Current for DC/DC Converters:  
–
–
–
TPS65053: DCDC1 = 1 A; DCDC2 = 0.6 A  
TPS650531: DCDC1 = 1 A; DCDC2 = 1 A  
TPS650532: DCDC1 = 1 A; DCDC2 = 1 A  
–
–
–
TPS65053: VLDO3 = 1.3 V  
TPS650531: VLDO3 = 1.2 V  
TPS650532: VLDO3 = 1.5 V  
•
•
DC/DC Converters Externally Adjustable  
VIN Range for DC/DC Converters  
From 2.5 V to 6 V  
•
Available in a 4 mm x 4 mm 24-Pin QFN  
Package  
•
•
•
•
•
2.25-MHz Fixed Frequency Operation  
Power Save Mode at Light Load Current  
180° Out-of-Phase Operation  
APPLICATIONS  
•
•
•
•
•
•
Cell Phones, Smart-Phones  
WLAN  
PDAs, Pocket PCs, GPS  
OMAP™ and Low-Power DSP Supply  
Portable Media Players  
Digital Cameras  
Output Voltage Accuracy in PWM mode ±1%  
Total Typical 32-µA Quiescent Current for Both  
DC/DC Converters  
•
100% Duty Cycle for Lowest Dropout  
DESCRIPTION  
The TPS65053x are integrated Power Management ICs for applications powered by one Li-Ion or Li-Polymer  
cell, which require multiple power rails. The TPS65053x provide two highly efficient, 2.25MHz step-down  
converters targeted at providing the core voltage and I/O voltage in a processor based system. Both step-down  
converters enter a low power mode at light load for maximum efficiency across the widest possible range of load  
currents. For low noise applications the devices can be forced into fixed frequency PWM mode by pulling the  
MODE pin high. Both converters allow the use of small inductors and capacitors to achieve a small solution size.  
TPS65053 provides an output current of up to 1A on the DCDC1 converter and up to 0.6A on the DCDC2  
converter. TPS650531 and TPS650532 provide up to 1A on both DCDC1 and DCDC2. The TPS65053x also  
integrate one 400mA LDO and two 200mA LDO voltage regulators, which can be turned on/off using separate  
enable pins on each LDO. Each LDO operates with an input voltage range between 1.5V and 6.5V allowing them  
to be supplied from one of the step-down converters or directly from the main battery. LDO1 and LDO2 are  
externally adjustable while LDO3 has a fixed output voltage of 1.3V on TPS65053, 1.2V on TPS650531 and 1.5V  
on TPS650532.  
The TPS65053x come in a small 24-pin leadless package (4mm × 4mm QFN) with a 0,5mm pitch.  
ORDERING INFORMATION(1)  
PART  
NUMBER  
QFN(2)  
PACKAGE  
PACKAGE  
MARKING  
TA  
output voltage on LDO3  
–40°C to 85°C  
–40°C to 85°C  
–40°C to 85°C  
TPS65053  
TPS650531  
TPS650532  
1.3V  
1.2V  
1.5V  
RGE  
RGE  
RGE  
65053  
650531  
650532  
(1) For the most current package and ordering information, see the Package Option Addendum at the end  
of this document, or see the TI web site at www.ti.com.  
(2) The RGE package is available in tape and reel. Add R suffix (TPS65053RGER) to order quantities of  
3000 parts per reel. Add T suffix (TPS65053RGET) to order quantities of 250 parts per reel.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
OMAP, PowerPAD are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007–2009, Texas Instruments Incorporated  
 
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