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參數資料
| 型號： | ADP1109AR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Micropower Low Cost Fixed 3.3 V, 5 V, 12 V and Adjustable DC-to-DC Converter |
| 中文描述： | 1.2 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 131K |
| 代理商： | ADP1109AR |
REV. 0
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
ADP1109
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., 1998
Mcropower LowCost
Fixed 3.3 V, 5 V 12 V and Adjustable
DC-to-DC Converter
FUNCT IONAL BLOCK DIAGRAMS
DRIVER
SW
V
IN
GND
COMPARATOR
A1
R1
SENSE
R2
250k
V
SHUTDOWN
+
ADP1109-3.3: R1 = 152k
V
ADP1109-5: R1 = 83k
V
ADP1109-12: R1 = 29k
V
Q1
120kHz
OSCILLATOR
1.25V
REFERENCE
Fixed Output
DRIVER
SW
V
IN
GND
COMPARATOR
+
A1
FB
SHUTDOWN
ADP1109
Q1
120kHz
OSCILLATOR
1.25V
REFERENCE
Adjustable Output
FEATURES
Operates at Supply Voltages 2 V to 12 V
Fixed 3.3 V, 5 V, 12 V and Adjustable Output
Minimum External Components Required
Ground Current: 320
m
A
Oscillator Frequency: 120 kHz
Logic Shutdown
8-Lead DIP and SO-8 Packages
APPLICATIONS
Cellular Telephones
Single-Cell to 5 V Converters
Laptop and Palmtop Computers
Pagers
Cameras
Battery Backup Supplies
Portable Instruments
Laser Diode Drivers
Hand-Held Inventory Computers
GE NE RAL DE SCRIPT ION
T he ADP1109 is a versatile step-up switching regulator. T he
device requires only minimal external components to operate as
a complete switching regulator.
T he ADP1109-5 can deliver 100 mA at 5 V from a 3 V input
and the ADP1109-12 can deliver 60 mA at 12 V from a 5 V
input. T he device also features a logic controlled shutdown
capability that, when a logic low is applied, will shut down the
oscillator.
T he 120 kHz operating frequency allows for the use of small
surface mount components. T he gated oscillator capability
eliminates the need for frequency compensation.
T YPICAL APPLICAT ION
SW
GND
ADP1109-12
+
D1
C1
22
m
F
16V
SENSE
L1
33
m
H
V
IN
5V
V
IN
SHUTDOWN
SHUTDOWN/PROGRAM
V
OUT
12V
60mA
Flash Memory VPP Generator
相關PDF資料 |
PDF描述 |
|---|---|
| ADP1109AN-3.3 | Voltage-Mode SMPS Controller |
| ADP1109AR-3.3 | Voltage-Mode SMPS Controller |
| ADP1109AR-12 | CIR 55C 55#16 PIN RECP WALL |
| ADP1109AR-33 | Micropower Low Cost Fixed 3.3 V, 5 V, 12 V and Adjustable DC-to-DC Converter |
| ADP1109AR-5 | Micropower Low Cost Fixed 3.3 V, 5 V, 12 V and Adjustable DC-to-DC Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADP1109AR-12 | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER-STEP UP DC-DC CONVERTER 12V - Bulk |
| ADP1109AR-3.3 | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER-STEP UP DC-DC CONVERTER 3V - Bulk |
| ADP1109AR-33 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Micropower Low Cost Fixed 3.3 V, 5 V, 12 V and Adjustable DC-to-DC Converter |
| ADP1109AR-5 | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER-STEP UP DC-DC CONVERTER 5V - Bulk |
| ADP1109AR-5-REEL | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER-STEP UP DC-DC CONVERTER 5V - Tape and Reel |
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