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TPS62621 PDF预览

TPS62621

更新时间: 2024-11-15 07:04:51
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德州仪器 - TI 转换器功效
页数 文件大小 规格书
28页 1003K
描述
600-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING

TPS62621 数据手册

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TPS62620, TPS62621  
TPS62622, TPS62623  
TPS62624, TPS62625  
CSP-6  
www.ti.com ............................................................................................................................................................... SLVS848AJULY 2009REVISED JULY 2009  
600-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER  
IN CHIP SCALE PACKAGING  
1
FEATURES  
23  
90% Efficiency at 6MHz Operation  
DESCRIPTION  
31µA Quiescent Current  
The TPS6262x 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  
±2% Total DC Voltage Accuracy  
Automatic PFM/PWM Mode Switching  
Low Ripple Light-Load PFM Mode  
Internal Soft Start, 120-µs Start-Up Time  
synchronous step-down dc-dc converter optimized for  
battery-powered portable applications. Intended for  
low-power applications, the TPS6262x supports up to  
600mA 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 1.2V to  
2.3V.  
Integrated Active Power-Down Sequencing  
(Optional)  
Current Overload and Thermal Shutdown  
Protection  
The TPS6262x 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 31µA (typ) during light load  
Complete Sub 1-mm Component Profile  
Solution  
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.  
Total Solution Size <12 mm2  
Available in a 6-Pin NanoFree™ (CSP)  
Regular and Ultra-Thin Packaging  
The TPS6262x is available in an 6-pin chip-scale  
package (CSP).  
APPLICATIONS  
Cell Phones, Smart-Phones  
WLAN, GPS and Bluetooth™ Applications  
DTV Tuner Applications  
DC/DC Micro Modules  
100  
200  
V = 3.6 V,  
I
90  
180  
V
= 1.8 V  
O
80  
70  
60  
50  
40  
30  
20  
160  
140  
12
100  
80  
Efficiency  
PFM/PWM Operation  
V
V
OUT  
1.8 V @ 600mA  
TPS6262x  
VIN  
BAT  
2.3 V .. 5.5 V  
L
SW  
0.47 mH  
Power Loss  
PFM/PWM Operation  
C
I
60  
FB  
EN  
C
O
2.2 mF  
4.7 mF  
40  
MODE  
GND  
10  
0
20  
0
0.1  
1
10 100  
- Load Current - mA  
1000  
I
O
Figure 1. Smallest Solution Size Application  
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 © 2009, Texas Instruments Incorporated  

TPS62621 替代型号

型号 品牌 替代类型 描述 数据表
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