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TPS65708

更新时间： 2024-02-09 11:41:48
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
22页 2319K
描述
PMU for Embedded Camera Module

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TPS65708 数据手册

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TPS65708  
www.ti.com  
SLVSAE1A –OCTOBER 2010–REVISED FEBRUARY 2011  
PMU for Embedded Camera Module  
Check for Samples: TPS65708  
1
FEATURES  
DESCRIPTION  
•
•
•
Two 400mA Step-Down Converters  
Up to 95% Efficiency  
TPS65708 is a power management unit targeted for  
embedded camera modules or other portable  
low-power consumer end equipment. It contains two  
high-efficiency step-down converters, two low-dropout  
linear regulators, and a 7.5mA current sink for driving  
a LED. The 2.25MHz step-down converter enters 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 using the MODE pin. The  
device allows the use of small inductors and  
VIN Range for DCDC Converters From  
3.6V to 6V  
•
•
•
•
•
•
•
2.25MHz Fixed Frequency Operation  
Power Save Mode at Light Load Current  
Output Voltage Accuracy in PWM mode ±1.5%  
100% Duty Cycle for Lowest Dropout  
180° Out of Phase Operation  
2 General Purpose 200mA LDOs  
capacitors to achieve  
a
small solution size.  
LDOs Optionally Powered From Step-Down  
Converters  
TPS65708 provides an output current of up to 400mA  
on both DCDC converters and up to 200mA on each  
of the LDOs. The enable signal to the dcdc  
converters and LDOs is generated internally by the  
undervoltage lockout circuit.  
•
•
7.5mA PWM Dimmable Current Sink  
Available in a 16-Ball WCSP with 0.5mm Pitch  
APPLICATIONS  
The TPS65708 comes in a small 16-ball wafer  
chip-scale package (WCSP) with 0.5mm ball pitch.  
•
•
•
Monitors  
Laptops  
Handheld Equipment  
APPLICATION CIRCUIT  
TPS65708  
VCC  
VIN1  
1.5 mH  
L1  
Vout1  
DCDC1  
400 mA  
10 mF  
FB1  
PGND1  
MODE  
VIN2  
1.5 mH  
L2  
Vout2  
DCDC2  
400 mA  
10 mF  
FB2  
PGND2  
VLDO1  
Vout3  
2.2 mF  
VINLDO1  
LDO1  
200 mA  
VLDO2  
Vout4  
2.2 mF  
VINLDO2  
PWM  
LDO2  
200 mA  
V(USB)  
ISINK  
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.  
PRODUCTION DATA information is current as of publication date.  
© 2010–2011, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...22

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