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參數資料
| 型號： | TPS62223DDC |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23 |
| 中文描述： | 400毫安，1.25 MHz的，高效率，降壓型轉換器薄，SOT23封裝 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 464K |
| 代理商： | TPS62223DDC |
www.ti.com
FEATURES
High-Efficiency Synchronous Step-Down Con-
verter With up to 95% Efficiency
2.5-V to 6.0-V Input Voltage Range
Adjustable Output Voltage Range From 0.7 V
to V
I
Fixed Output Voltage Options Available
Up to 400-mA Output Current
1.25-MHz Fixed Frequency PWM Operation
Highest Efficiency Over Wide Load Current
Range Due to Power-Save Mode
15-μA Typical Quiescent Current
Soft Start
100% Duty Cycle Low-Dropout Operation
Dynamic Output-Voltage Positioning
Available in TSOT23 Package
DESCRIPTION
The TPS6222x devices are a family of high-efficiency,
synchronous step-down converters ideally suited for
portable systems powered by 1-cell Li-Ion or 3-cell
NiMH/NiCd batteries. The devices are also suitable to
operate from a standard 3.3-V or 5-V voltage rail.
APPLICATIONS
PDAs and Pocket PC
Cellular Phones, Smart Phones
OMAP and Low Power DSP Supply
Digital Cameras
Portable Media Players
Portable Equipment
WLAN PC Cards
V
I
GND
EN
SW
FB
C3
4.7
μ
F
L1
4.7
μ
H
C4
10
μ
F
TPS62220
V
I
2.5 V to 6 V
V
O
1.5 V/400 mA
R1
360 k
R2
180 k
C1
22 pF
C2
100 pF
1
2
3
5
4
40
45
50
55
60
65
70
75
80
85
90
95
100
0.01
0.1
I
L
Load Current mA
1
10
100
1000
V
= 1.8 V,
L = 4.7
μ
H,
C
O
= 22
μ
F
V
I
= 2.7 V
V
I
= 5 V
E
V
I
= 3.7 V
Typical Application (Adjustable Output Voltage Version)
TPS62220, TPS62221, TPS62222
TPS62223, TPS62224
TPS62228, TPS62229
SLVS491C–SEPTEMBER 2003–REVISED SEPTEMBER 2004
400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
With an output voltage range of 6.0 V down to 0.7 V
and up to 400-mA output current, the devices are
ideal to power low voltage DSPs and processors
used in PDAs, pocket PCs, and smart phones. Under
nominal load current, the devices operate with a fixed
switching frequency of typically 1.25 MHz. At light
load currents, the part enters the power-save mode
operation; the switching frequency is reduced and the
quiescent current is typically only 15 μA; therefore,
the device achieves the highest efficiency over the
entire load current range. The TPS6222x needs only
three small external components. Together with the
tiny TSOT23 package, a minimum system solution
size can be achieved. An advanced fast response
voltage mode control scheme achieves superior line
and load regulation with small ceramic input and
output capacitors.
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.
OMAP is a trademark of Texas Instruments.
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 2003–2004, Texas Instruments Incorporated
相關PDF資料 |
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|---|---|
| TPS6222 | 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23 |
| TPS62228DDC | 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23 |
| TPS62304DRC | 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS62223DDCR | 功能描述:直流/直流開關調節器 2.3V Out 400mA 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 |
| TPS62223DDCRG4 | 功能描述:直流/直流開關調節器 2.3V Out 400mA 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 |
| TPS62223DDCT | 功能描述:直流/直流開關調節器 2.3V Out 400mA 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 |
| TPS62223DDCTG4 | 功能描述:直流/直流開關調節器 2.3V Out 400mA 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 |
| TPS62224DDCR | 功能描述:直流/直流開關調節器 1.6V Out 400mA 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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