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參數資料
| 型號： | TPS62044DRC |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 1.2 A/1.25 MHZ, HIGH EFFICIENCY STEP DOWN CONVERTER |
| 中文描述： | 1.2 A/1.25兆赫，高效降壓轉換器 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 372K |
| 代理商： | TPS62044DRC |
SLVS463A JUNE 2003 REVISED OCTOBER 2003
FEATURES
Up to 95% Conversion Efficiency
Typical Quiescent Current: 18
μ
A
Load Current: 1.2 A
Operating Input Voltage Range: 2.5 V to 6.0 V
Switching Frequency: 1.25 MHz
Adjustable and Fixed Output Voltage
Power Save Mode Operation at Light load
Currents
100% Duty Cycle for Lowest Dropout
Internal Softstart
Dynamic Output Voltage Positioning
Thermal Shutdown
Short-Circuit Protection
10 Pin MSOP PowerPad
Package
10 Pin QFN 3 X 3 mm Package
APPLICATIONS
PDA, Pocket PC and Smart Phones
USB Powered Modems
CPUs and DSPs
PC Cards and Notebooks
xDSL Applications
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
GND
SW
SW
FB
PGND
PGND
2
3
1
6
4
9
10
5
8
TPS6204x
VI
2.5 V to 6 V
VO
0.7 V to VI /1.2 A
C2
22
μ
F
C1
22
μ
F
L1
6.2
μ
H
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
IL Load Current mA
1
10
100
1 k
10 k
VI = 2.7 V
VI = 3.6 V
VI = 5 V
MODE = Low
VI = 3.6 V
MODE = High
E
EFFICIENCY
vs
LOAD CURRENT
VO = 1.8 V
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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.
PowerPAD is a trademark of Texas Instruments.
www.ti.com
Copyright
2003, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS62044DRCR | 功能描述:直流/直流開關調節器 1.8V Out 1.2A Hi-Ef Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62044DRCRG4 | 功能描述:直流/直流開關調節器 1.8V Out 1.2A Hi-Ef Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62046DGQ | 功能描述:直流/直流開關調節器 3.3V Out/1.2A Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62046DGQG4 | 功能描述:直流/直流開關調節器 3.3V Out/1.2A Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62046DGQR | 功能描述:直流/直流開關調節器 3.3V Out/1.2A Hi-Eff Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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