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| 型号： | TPS62225DDCT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.4 A SWITCHING REGULATOR, 1850 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | GREEN, PLASTIC, TSOT-23, 5 PIN |
| 文件页数： | 1/24页 |
| 文件大小： | 676K |
| 代理商： | TPS62225DDCT |
1
FEATURES
DESCRIPTION
APPLICATIONS
VI
GND
EN
SW
FB
C3
4.7 F
m
L1
4.7 H
m
C4
10 F
m
TPS62220
VI
2.5Vto6V
VO
1.5V/400mA
R1
360kW
R2
180kW
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
VO =1.8V,
L =4.7 H,
m
CO =22 F
m
Efficency
%
IL LoadCurrent mA
VI =3.7V
Typical Application(AdjustibleOutputVoltageVersion)
VI =5V
VI =2.7V
www.ti.com....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
2
High-Efficiency Synchronous Step-Down
Converter With up to 95% Efficiency
The TPS6222x devices are a family of high-efficiency,
synchronous step-down converters ideally suited for
2.5-V to 6-V Input Voltage Range
portable systems powered by 1-cell Li-Ion or 3-cell
Adjustable Output Voltage Range From 0.7 V
NiMH/NiCd batteries. The devices are also suitable to
to VI
operate from a standard 3.3-V or 5-V voltage rail.
Fixed Output Voltage Options Available
With an output voltage range of 6 V down to 0.7 V
Up to 400-mA Output Current
and up to 400-mA output current, the devices are
1.25-MHz Fixed Frequency PWM Operation
ideal for powering the low voltage TMS320 DSP
family and processors used in PDAs, pocket PCs,
Highest Efficiency Over Wide Load Current
and smart phones. Under nominal load current, the
Range Due to Power-Save Mode
devices operate with a fixed switching frequency of
15 A Typical Quiescent Current
typically 1.25 MHz. At light load currents, the part
Soft Start
enters the power-save mode operation; the switching
frequency is reduced and the quiescent current is
100% Duty Cycle Low-Dropout Operation
typically only 15
A; therefore, the device achieves
Dynamic Output-Voltage Positioning
the highest efficiency over the entire load current
Available in TSOT23 Package
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
PDAs and Pocket PC
control scheme achieves superior line and load
Cellular Phones, Smart Phones
regulation with small ceramic input and output
OMAP and Low Power DSP Supply
capacitors.
Digital Cameras
Portable Media Players
Portable Equipment
WLAN PC Cards
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
OMAP, TMS320 are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2003–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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| TPS62227DDCR | 功能描述:直流/直流开关调节器 1.2V Out 400mA 95% Eff Step-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62227DDCRG4 | 功能描述:直流/直流开关调节器 1.2V Out 400mA 95% Eff Step-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62227DDCT | 功能描述:直流/直流开关调节器 1.2VOtp 400mA95%Eff Cnvrtr15uA ThinSOT23 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62227DDCTG4 | 功能描述:直流/直流开关调节器 1.2V Out 400mA 95% Eff Step-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62228DDCR | 功能描述:直流/直流开关调节器 1.875V Out 400mA Step-Down Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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