參數(shù)資料
型號(hào)： TPS62227DDC
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(zhuǎn)換器薄，SOT23封裝
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 709K
代理商： TPS62227DDC
www.ti.com
FEATURES
High-Efficiency Synchronous Step-Down
Converter With up to 95% Efficiency
2.5-V to 6-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 F
m
L1
4.7 H
m
C4
10 F
m
TPS62220
V
I
2.5Vto6V
V
O
1.5V/400mA
R1
360k
W
R2
180k
W
C1
22pF
C2
100pF
1
2
3
5
4
40
45
50
55
60
65
70
75
80
85
90
95
100
0.01
0.1
1
10
100
1000
V
O
=1.8V
,
L =4.7 H,
m
C
O
=22 F
m
Efficency
%
I
L
LoadCurrent
mA
V
I
=3.7V
T
ypical Application(AdjustibleOutputVoltageVersion)
V
I
=5V
V
I
=2.7V
TPS62220, TPS62221, TPS62222
TPS62223, TPS62224, TPS62227
TPS62228, TPS62229
SLVS491D–SEPTEMBER 2003–REVISED MARCH 2006
400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
With an output voltage range of 6 V down to 0.7 V
and up to 400-mA output current, the devices are
ideal for powering the low voltage TMS320 DSP
family 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
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
capacitors.
needs
only
three
small
input
and
output
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, TMS320 are trademarks 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 2003–2006, Texas Instruments Incorporated
相關(guān)PDF資料
PDF描述
TPS62229DDCR 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
TPS62229DDCRG4 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
TPS62229DDCT 400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
TPS62240DDC 2.25 MHz 300 mA Step Down Converter in 2x2SON/TSOT23 Package
TPS62240DRV 2.25 MHz 300 mA Step Down Converter in 2x2SON/TSOT23 Package
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62227DDCR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2V Out 400mA 95% Eff Step-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62227DDCRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2V Out 400mA 95% Eff Step-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62227DDCT 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2VOtp 400mA95%Eff Cnvrtr15uA ThinSOT23 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62227DDCTG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2V Out 400mA 95% Eff Step-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62228DDCR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.875V Out 400mA Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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