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TPS62046DRCRG4 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DC/DC转换器
封装:
VSON-10
描述:
开关稳压器 3.3V Out/1.2A Hi-Eff Step-Down Converter
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P4Hot
典型应用电路图在P1P17
原理图在P5
封装尺寸在P18P19P21P22P23
型号编码规则在P2
标记信息在P2P18P19P20
封装信息在P18P19P20P21P22P23
技术参数、封装参数在P2
应用领域在P1P17P30
电气规格在P3
导航目录
TPS62046DRCRG4数据手册
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of 30 Go
若手册格式错乱，请下载阅览PDF原文件
TPS62040
TPS62042, TPS62043
TPS62044, TPS62046
SLVS463B − JUNE 2003 − REVISED OCTOBER 2005
1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
FEATURES
D Up to 95% Conversion Efficiency
D Typical Quiescent Current: 18 µA
D Load Current: 1.2 A
D Operating Input Voltage Range: 2.5 V to 6.0 V
D Switching Frequency: 1.25 MHz
D Adjustable and Fixed Output Voltage
D Power Save Mode Operation at Light load
Currents
D 100% Duty Cycle for Lowest Dropout
D Internal Softstart
D Dynamic Output Voltage Positioning
D Thermal Shutdown
D Short-Circuit Protection
D 10 Pin MSOP PowerPad™ Package
D 10 Pin QFN 3 X 3 mm Package
APPLICATIONS
D PDA, Pocket PC and Smart Phones
D USB Powered Modems
D CPUs and DSPs
D PC Cards and Notebooks
D xDSL Applications
D Standard 5-V to 3.3-V Conversion
DESCRIPTION
The TPS6204x family of devices are high efficiency
synchronous step-down dc-dc converters optimized for
battery powered portable applications. The devices are
ideal for portable applications powered by a single Li-Ion
battery cell or by 3-cell NiMH/NiCd batteries. With an
output voltage range from 6.0 V down to 0.7 V, the devices
support low voltage DSPs and processors in PDAs,
pocket PCs, as well as notebooks and subnotebook
computers. The TPS6204x operates at a fixed switching
frequency of 1.25 MHz and enters the power save mode
operation at light load currents to maintain high efficiency
over the entire load current range. For low noise
applications, the devices can be forced into fixed
frequency PWM mode by pulling the MODE pin high. The
TPS6204x supports up to 1.2-A load current.
7
VIN
VIN
EN
MODE
SW
FB
PGND
PGND
SW
GND
2
3
1
4
9
10
5
8
6
TPS6204x
V
I
2.5 V to 6 V
V
O
0.7 V to V
I
/1.2 A
C2
22 µF
C1
22 µF
L1
6.2 µH
Typical Application Circuit 1.2-A Output Current
40
45
50
55
60
65
70
75
80
85
90
95
100
0 0.01 0.1 1 10 100 1 k 10 k
V
I
= 2.7 V
V
I
= 3.6 V
V
I
= 5 V
MODE = Low
V
I
= 3.6 V
MODE = High
Efficiency − %
EFFICIENCY
vs
LOAD CURRENT
I
L
− Load Current − mA
V
O
= 1.8 V
PRODUCTION DATA information is 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.
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.
www.ti.com
Copyright © 2003 − 2005, Texas Instruments Incorporated
PowerPAD is a trademark of Texas Instruments.
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