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TPS62601 PDF预览

TPS62601

更新时间: 2024-11-15 04:48:43
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
21页 591K
描述
500-mA, 6-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING

TPS62601 数据手册

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TPS62600  
TPS62601  
CSP-6  
www.ti.com ...................................................................................................................................................................................................... SLVS678JUNE 2008  
500-mA, 6-MHz SYNCHRONOUS STEP-DOWN CONVERTER  
IN CHIP SCALE PACKAGING  
1
FEATURES  
23  
89% Efficiency at 6MHz Operation  
DESCRIPTION  
Output Current Up to 500mA  
The TPS6260x device is  
a
high-frequency  
Wide VIN Range From 2.3V to 5.5V  
6MHz Regulated Frequency Operation  
Best in Class Load and Line Transient  
±1.5% Total DC Voltage Accuracy  
Automatic PFM/PWM Mode Switching  
30µA Quiescent Current  
synchronous step-down dc-dc converter optimized for  
battery-powered portable applications. Intended for  
low-power applications, the TPS6260x supports up to  
500mA load current, and allows the use of low cost  
chip inductor and capacitors.  
With a wide input voltage range of 2.3V to 5.5V, the  
device supports applications powered by Li-Ion  
batteries with extended voltage range. Different fixed  
voltage output versions are available from 1V to 2.5V.  
35ns Minimum On-Time  
Internal Soft Start, <200-µs Start-Up Time  
Current Overload and Thermal Shutdown  
Protection  
The TPS6260x operates at a regulated 6-MHz  
switching frequency and enters the power-save mode  
operation at light load currents to maintain high  
efficiency over the entire load current range.  
Three Surface-Mount External Components  
Required (One MLCC Inductor, Two Ceramic  
Capacitors)  
The PFM mode extends the battery life by reducing  
the quiescent current to 30µA (typ) during light load  
Complete Sub 1-mm Component Profile  
Solution  
Total Solution Size <13 mm2  
and  
standby  
operation.  
For  
noise-sensitive  
applications, the device 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 1µA.  
Available in a 6-Pin NanoFree™ (CSP)  
Packaging  
The TPS6260x is available in an 6-pin chip-scale  
package (CSP).  
APPLICATIONS  
Cell Phones, Smart-Phones  
PDAs, Pocket PCs  
WLAN and Bluetooth™ Applications  
DVB-H Tuner Applications  
Portable Hard Disk Drives  
DC/DC Micro Modules  
100  
90  
200  
180  
VI = 3.6 V,  
VO = 1.83 V  
160  
80  
Efficiency  
PFM/PWM Operation  
140  
12
70  
60  
100  
80  
50  
40  
30  
20  
Power Loss  
PFM/PWM Operation  
TPS 6260x  
L
V
O
60  
VIN  
SW  
0.47 mH  
1.8 V/ 500 mA  
2.3 V.. 5.5 V  
40  
20  
0
C
I
EN  
FB  
C
L = 0.5 mH (Aircoil),  
CO = 4.7 mF  
V
I
O
10  
0
2.2 mF  
4.7 mF  
GND  
MODE  
1
0.1  
10  
100  
1000  
IO - Load Current - mA  
Figure 1. Smallest Solution Size Application  
(Fixed Output Voltage)  
Figure 2. Efficiency vs Load Current  
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
3
NanoFree is a trademark of Texas Instruments.  
Bluetooth is a trademark of Bluetooth SIG, Inc.  
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 © 2008, Texas Instruments Incorporated  

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