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參數資料
| 型號： | TPS6205 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 800-mA SYNCHRONOUS STEP-DOWN CONVERTER |
| 中文描述： | 800毫安同步降壓轉換器 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 432K |
| 代理商： | TPS6205 |
www.ti.com
FB
PG
VIN
8
LBO
GND
3
SYNC
EN
LBI
PGND
10
TPS62052
SW
1
6
7
2
9
5
4
C
i
= 10
μ
F
C
o
= 22
μ
F
V
O
= 1.5 V / 800 mA
L1 = 10
μ
H
V
I
= 3.3 V to 10 V
TYPICAL APPLICATION CIRCUIT
I
O
– Output Current – mA
50
30
10
0.01
0.1
1
10
E
60
70
TPS62050
EFFICIENCY
vs
OUTPUT CURRENT
100
100
1 k
80
20
0
40
90
V
I
= 7.2 V,
V
= 5 V,
SYNC = L
TPS62050, TPS62051
TPS62052, TPS62054, TPS62056
SLVS432D–SEPTEMBER 2002–REVISED OCTOBER 2003
800-mA SYNCHRONOUS STEP-DOWN CONVERTER
FEATURES
High-Efficiency Synchronous Step-Down
Converter With up to 95% Efficiency
12-μA Quiescent Current (Typ)
2.7-V to 10-V Operating Input Voltage Range
Adjustable Output Voltage Range From 0.7 V
to 6 V
Fixed Output Voltage Options Available in
1.5 V, 1.8 V, and 3.3 V
Synchronizable to External Clock Signal up to
1.2 MHz
High Efficiency Over a Wide Load Current
Range in Power-Save Mode
100% Maximum Duty Cycle for Lowest
Dropout
Low Noise Operation in Forced Fixed
Frequency PWM Operation Mode
Internal Softstart
Overtemperature and Overcurrent Protected
Available in 10-Pin Microsmall Outline
Package MSOP
DESCRIPTION
The TPS6205x devices are a family of high-efficiency
synchronous step-down dc/dc converters ideally suited
for systems powered from a 1-cell or 2-cell Li-Ion
battery or from a 3-cell to 5-cell NiCd, NiMH, or alkaline
battery.
The TPS62050 is a synchronous PWM converter with
integrated N-channel and P-channel power MOSFET
switches. Synchronous rectification increases ef-
ficiency and reduces external component count. To
achieve highest efficiency over a wide load current
range,
the
converter
pulse-frequency modulation (PFM) mode at light load
currents. Operating frequency is typically 850 kHz,
allowing the use of small inductor and capacitor values.
The device can be synchronized to an external clock
signal in the range of 600 kHz to 1.2 MHz. For low noise
operation, the converter can be programmed into
forced-fixed frequency in PWM mode. In shutdown
mode, the current consumption is reduced to less than
2 μA. The TPS6205x is available in the 10-pin (DGS)
micro-small outline package (MSOP) and operates
over an free air temperature range of -40
°
C to 85
°
C.
enters
a
power-saving
APPLICATIONS
Cellular Phones
Organizers, PDAs, and Handheld PCs
Low Power DSP Supply
Digital Cameras and Hard Disks
MATHCAD is a trademark of Mathsoft Incorporated.
Pleasebeawarethatanimportantnoticeconcerningavailability, standard warranty, and use in critical applications of Texas Instruments
semiconductorproductsanddisclaimerstheretoappears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
ProductsconformtospecificationsperthetermsofTexasInstruments
standard warranty. Production processing does not necessarily in-
cludetestingofallparameters.
Copyright 2002–2003, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS62050DGS | 功能描述:直流/直流開關調節器 Adj 800mA 10V Vin 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 |
| TPS62050DGSG4 | 功能描述:直流/直流開關調節器 Adj 800mA 10V Vin 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 |
| TPS62050DGSR | 功能描述:直流/直流開關調節器 Adj 800mA 10V Vin 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 |
| TPS62050DGSR | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| TPS62050DGSRG4 | 功能描述:直流/直流開關轉換器 Adj 800mA 10V Vin Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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