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TPS65051

更新时间： 2024-10-14 04:48:43
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德州仪器 - TI 转换器输入元件
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37页 1139K
描述
6-CHANNEL POWER MGMT IC WITH TWO STEP-DOWN CONVERTERS AND 4 LOW-INPUT VOLTAGE LDOs

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TPS65051 数据手册

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TPS65050, TPS65051, TPS65052  
TPS65054, TPS65056  
www.ti.com  
SLVS710–JANUARY 2007  
6-CHANNEL POWER MGMT IC WITH TWO STEP-DOWN CONVERTERS  
AND 4 LOW-INPUT VOLTAGE LDOs  
FEATURES  
APPLICATIONS  
•
•
•
•
Cell Phones, Smart-Phones  
WLAN  
PDAs, Pocket PCs  
OMAP™ and Low-Power TMS320™ DSP  
Supply  
•
Up To 95% Efficiency  
•
Output Current for DC/DC Converters:  
–
–
–
–
–
TPS65050: 2 x 0.6 A  
TPS65051: DCDC1 = 1 A; DCDC2 = 0.6 A  
TPS65052: DCDC1 = 1 A; DCDC2 = 0.6 A  
TPS65054: 2 x 0.6 A  
•
•
Samsung S3C24xx application processor  
Supply  
Portable Media Players  
TPS65056: DCDC1 = 1 A; DCDC2 = 0.6 A  
•
Output Voltages for DC/DC Converters  
DESCRIPTION  
–
–
–
TPS65050: Externally Adjustable  
TPS65051: Externally Adjustable  
The TPS6505x are integrated Power Management  
ICs for applications powered by one Li-Ion or  
Li-Polymer cell, which require multiple power rails.  
The TPS6505x provides two efficient, 2.25-MHz  
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.  
TPS65052: DCDC1 = Fixed at 3.3 V;  
DCDC2 = 1 V / 1.3 V for Samsung  
Application Processors  
–
–
TPS65054: DCDC1 = Externally Adjustable;  
DCDC2 = 1.3 V / 1.05 V for OMAP™1710  
Processor  
TPS65056: DCDC1 = Fixed at 3.3 V;  
DCDC2 = 1 V / 1.3 V for Samsung  
Application Processors  
For low noise applications, the devices can be forced  
into fixed frequency PWM mode by pulling the  
MODE pin high. In the shutdown mode, the current  
consumption is reduced to less than 1 µA. The  
devices allow the use of small inductors and  
•
VI Range for DC/DC Converters  
From 2.5 V to 6 V  
•
•
•
•
•
•
2.25-MHz Fixed Frequency Operation  
Power Save Mode at Light Load Current  
180° Out-of-Phase Operation  
capacitors to achieve  
a
small solution size.  
TPS6505x provides an output current of up to 1 A on  
each DC/DC converter. The TPS6505x also integrate  
two 400-mA LDO and two 200-mA 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 1.5 V and 6.5 V  
allowing them to be supplied from one of the  
step-down converters or directly from the main  
battery.  
Output Voltage Accuracy in PWM mode ±1%  
Low Ripple PFM Mode  
Total Typical 32-µA Quiescent Current for  
Both DC/DC Converters  
•
•
100% Duty Cycle for Lowest Dropout  
Two General-Purpose 400-mA, High PSRR  
LDOs  
Four digital input pins are used to set the output  
voltage of the LDOs from a set of 16 different  
combinations for LDO1 to LDO4 on TPS65050 and  
TPS65052. In TPS65051, TPS65054 and TPS65056,  
the LDO voltages are adjustable using external  
resistor dividers.  
•
Two General-Purpose 200-mA, High PSRR  
LDOs  
•
•
•
VI range for LDOs from 1.5 V to 6.5 V  
Digital Voltage Selection for the LDOs  
The TPS6505x come in a small 32-pin leadless  
package (4 mm x 4 mm QFN) with a 0.4 mm pitch.  
Available in a 4 mm x 4 mm 32-Pin QFN  
Package  
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.  
OMAP, TMS320, PowerPAD are trademarks of Texas Instruments.  
UNLESS OTHERWISE NOTED this document contains  
PRODUCTION DATA information current as of publication date.  
Products conform to specifications per the terms of Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007, Texas Instruments Incorporated  
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