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參數(shù)資料
| 型號(hào)： | ADP3050AR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 200 kHz, 1 A High-Voltage Step-Down Switching Regulator |
| 中文描述： | 2.1 A SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MS-012AA, SOIC-8 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 191K |
| 代理商： | ADP3050AR |
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Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
ADP3050
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
200 kHz, 1 A High-Voltage
Step-Down Switching Regulator
FUNCTIONAL BLOCK DIAGRAM
200kHz
OSCILLATOR
FREQUENCY
AND CURRENT LIMIT
FOLDBACK
2.5V
REGULATOR
CURRENT SENSE
AMPLIFIER
BOOST
FB
SD
GND
BIAS
CURRENT
LIMIT
g
m
1.2V
CMP
R
S
Q
DRIVER
SWITCH
IN
COMP
+
ADP3050
FEATURES
Wide Input Voltage Range: 3.6 V to 30 V
Adjustable and Fixed (3.3 V, 5 V) Output Options
Integrated 1 A Power Switch
Uses Small Surface-Mount Components
Cycle-By-Cycle Current Limiting
Peak Input Voltage (100 ms): 60 V
Thermally Enhanced 8-Lead SOIC Package
Configurable as a Buck, Buck-Boost and SEPIC
Regulator
APPLICATIONS
Industrial Power Systems
PC Peripheral Power Systems
Preregulator for Linear Regulators
Distributed Power Systems
Automotive Systems
Battery Chargers
GENERAL DESCRIPTION
The ADP3050 is a current-mode monolithic buck (step-down)
PWM switching regulator that contains a high current 1 A power
switch and all control, logic, and protection functions. It uses a
unique compensation scheme that allows the use of any type of
output capacitor (tantalum, ceramic, electrolytic, OS-CON).
Unlike some buck regulators, the design is not restricted to using
a specific type of output capacitor or ESR value.
A special boosted drive stage is used to saturate the NPN power
switch, providing a system efficiency higher than conventional
bipolar buck switchers. Further efficiency improvements are ob-
tained by using the low voltage regulated output to provide the
device's internal operating current. A high switching frequency
allows the use of small external surface-mount components. A
wide variety of standard off-the-shelf devices can be used, pro-
viding a great deal of design flexibility. A complete regulator
design requires only a few external components.
The ADP3050 includes a shutdown input that places the device
in a low-power mode, reducing the total supply current to under
20
μ
A. Internal protection features include thermal shutdown
circuitry and a cycle-by-cycle current-limit for the power switch
to provide complete device protection under fault conditions.
The ADP3050 provides excellent line and load regulation,
maintaining typically less than
±
3% output voltage accuracy
over temperature and under all input voltage and output current
conditions.
The ADP3050 is specified over the industrial temperature range of
–40
°
C to +85
°
C and is available in a thermally enhanced 8-lead
SOIC package.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3050AR3.3 | 制造商:Analog Devices 功能描述:IC ((NS)) |
| ADP3050AR-3.3 | 功能描述:IC REG BUCK 3.3V 1A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| ADP3050AR-3.3-REEL | 制造商:Analog Devices 功能描述:Conv DC-DC Single Step Down 3.6V to 30V 8-Pin SOIC N T/R |
| ADP3050AR-3.3-RL7 | 功能描述:IC REG BUCK 3.3V 1A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| ADP3050AR-33 | 制造商:AD 制造商全稱:Analog Devices 功能描述:200 kHz, 1 A High-Voltage Step-Down Switching Regulator |
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