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參數(shù)資料
| 型號： | ADP3088ARM |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 MHz, 750 mA Buck Regulator |
| 中文描述： | 1.4 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 623K |
| 代理商： | ADP3088ARM |
Preliminary Technical Data
ADP3088
a
REV. PrK
3/28/02
Information furnished by Analog Devices is believed to be accurate and reli-
able. 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.
One Technology Way, PO. 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., 2002
1 MHz, 750 mA Buck Regulator
PRELIMINARY TECHNICAL DATA
FEATURES
1 MHz PWM Frequency
Automatic PWM to Power Saving Mode at Light Load
Fully Integrated 1 A Power Switch
3% Output Regulation Accuracy over Temperature,
Line, and Load
100% Duty Cycle Operation
Simple Compensation
Output Voltage: 1.25 V to 10.5 V
Small Inductor and MLC Capacitors
Low Quiescent Current while Pulse Skipping
Thermal Shutdown
Fully Integrated Soft Start
Cycle-by-cycle Current Limit
APPLICATONS
PDAs and Palmtop Computers
Notebook Computers
PCMCIA Cards
Bus Products
Portable Instruments
GENERAL DESCRIPTION
The ADP3088 is a high frequency, non-synchronous PWM
step-down DC-DC regulator with an integrated 1A power
switch in a space-saving MSOP8 package. It provides high
efficiency, excellent dynamic response, and is very simple
to use.
The ADP3088’s 1 MHz switching frequency allows for
small, inexpensive external components, and the current
mode control loop is simple to compensate and eases noise
filtering. It operates in PWM current mode under heavy
loads and saves energy at lighter loads by switching auto-
matically into Power Saving mode. Soft start is integrated
completely on chip, as is the cycle-by-cycle current limit.
Capable of operating from 2.5 V to 11 V input, it is ideal for
many applications, including portable, battery power appli-
cations, where local point-of-use power regulation is re-
quired. Supporting output voltages down to 1.25 V, the
ADP3088 is ideal to generate low voltage rails, providing
the optimal solution in its class for delivering power effi-
ciently, responsively, and simply with minimal printed cir-
cuit board area.
The device is specified over the industrial temperature
range of -40 °C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. Typical Application
SW
DRV
FB
IN
GND
COMP
ADP3088
VOUT
1.8V
3.3
μ
H
10.0k
22.4k
20k
4.7pF
1N5817
IN
GND
10μF
0.1μF
10μF
220pF
SW
FB
COMP
GND
IN
DRV
CURRENT
SENSE
AMP
PWM
COMPARATOR
REF
1.245V
ERROR
AMP
gm
SOFT-START
TIMER
+
R
S Q
RUN/STOP
COMPARATORS
1MHz
PROTECTION
LOGIC
(ILIM, OT)
IN
GND
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3088ARM-REEL | 制造商:Analog Devices 功能描述:Conv DC-DC Single Step Down 2.5V to 11V 8-Pin MSOP T/R 制造商:Analog Devices 功能描述:CONV DC-DC SGL-OUT STEP DOWN 8MSOP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:05.A BUCK REGULATOR - Tape and Reel |
| ADP3088ARM-REEL7 | 功能描述:IC REG BUCK ADJ 0.75A 8MSOP 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:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| ADP3088ARMZ-REEL7 | 制造商:Analog Devices 功能描述:CONV DC-DC SGL-OUT STEP DOWN 8MSOP - Tape and Reel |
| ADP3089 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1 MHz, 1 A Buck Regulator |
| ADP3089ACP | 制造商:AD 制造商全稱:Analog Devices 功能描述:1 MHz, 1 A Buck Regulator |
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