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參數資料
| 型號： | TPS62021DRC |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 600 mA/1.25 MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER |
| 中文描述： | 600 mA/1.25兆赫高效降壓型轉換器 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 425K |
| 代理商： | TPS62021DRC |
www.ti.com
FEATURES
Up to 95% Conversion Efficiency
Typical Quiescent Current: 18 μA
Load Current: 600 mA
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
Active-Low MODE pin on TPS62021
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
DESCRIPTION
The TPS62020 is a high efficiency synchronous
step-down dc-dc converter optimized for battery pow-
ered portable applications. This device is 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
device supports low voltage DSPs and processors in
PDAs, pocket PCs, as well as notebooks and
subnotebook computers. The TPS62020 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 device can be
forced into fixed frequency PWM mode by pulling the
MODE
pin
high.
The
TPS62020 and the TPS62021 is the logic level of the
MODE pin. The TPS62021 has an active-low MODE
pin. The TPS62020 supports up to 600-mA load
current.
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
VIN
VIN
EN
MODE
GND
SW
SW
FB
PGND
PGND
2
3
1
6
4
9
10
5
7
8
TPS62020
C1
R2
R1
C2
C3
10
μ
F
V
I
2.5 V to 6 V
L1
10
μ
H
C4
10
μ
F
V
O
0.7 V to V
I
/ 600 mA
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.01
0.10
1
1000
10
100
E
EFFICIENCY
vs
LOAD CURRENT
I
L
Load Current mA
V
O
= 1.8 V
V
= 3.6 V
Mode = High
Mode = Low
V
I
= 5 V
V
I
= 3.6 V
V
I
= 2.7 V
TPS62020, TPS62021
SLVS076B–JUNE 2003–REVISED APRIL 2004
600 mA/1.25 MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER
difference
between
the
Typical Application Circuit (600-mA Output Current)
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.
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
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS62021DRCR | 功能描述:直流/直流開關調節器 Adj 600mA 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 |
| TPS62021DRCRG4 | 功能描述:直流/直流開關調節器 Adj 600mA 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 |
| TPS62026DGQ | 功能描述:直流/直流開關調節器 3.3V Out 600mA 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 |
| TPS62026DGQG4 | 功能描述:直流/直流開關調節器 3.3V Out 600mA 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 |
| TPS62026DGQR | 功能描述:直流/直流開關調節器 3.3V Out 600mA 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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