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參數資料
| 型號： | ADP1108AR-5 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Circular Connector; No. of Contacts:128; Series:LJT06R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-35 |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 25 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 234K |
| 代理商： | ADP1108AR-5 |
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
Mcropower DC-DC Converter
Adjustable and Fixed 3.3 V 5 V 12 V
ADP1108
FUNCT IONAL BLOCK DIAGRAMS
SET
V
IN
GAIN BLOCK/
ERROR AMP
COMPARATOR
SW2
FB
GND
SW1
AO
I
LIM
OSCILLATOR
DRIVER
A1
A2
1.245V
REFERENCE
ADP1108
SET
V
IN
GAIN BLOCK/
ERROR AMP
COMPARATOR
SW2
SENSE
GND
SW1
AO
I
LIM
OSCILLATOR
DRIVER
A1
A2
1.245V
REFERENCE
ADP1108-3.3
ADP1108-5
ADP1108-12
R2
753k
R1
ADP1108-3.3: R1 = 456k
ADP1108-5: R1 = 250k
ADP1108-12: R1 = 87.4k
GE NE RAL DE SCRIPT ION
T he ADP1108 is a highly versatile micropower switch-mode
dc-dc converter that operates from an input voltage supply as
low as 2.0 V and typically starts up from 1.8 V.
T he ADP1108 can be programmed into a step-up or step-down
dc-to-dc converter with only three external components. T he
fixed outputs are 3.3 V, 5 V and 12 V. An adjustable version is
also available. In step-up mode, supply voltage range is 2.0 V to
12 V, and 30 V in step-down mode. T he ADP1108 can deliver
150 mA at 5 V from a 2 AA cell input and 300 mA at 5 V from
a 9 V input in step-down mode. Switch current limit can be
programmed with a single resistor.
For battery operated and power conscious applications, the
ADP1108 offers a very low power consumption of less than
110
μ
A.
T he auxiliary gain block available in ADP1108 can be used
as a low battery detector, linear post regulator, under voltage
lockout circuit or error amplifier.
FEATURES
Operates at Supply Voltages From 2.0 V to 30 V
Consumes Only 110
m
A Supply Current
Step-Up or Step-Down Mode Operation
Minimum External Components Required
Low Battery Detector Comparator On-Chip
User-Adjustable Current Limit
Internal 1 A Power Switch
Fixed or Adjustable Output Voltage Versions
8-Pin DIP or SO-8 Package
APPLICATIONS
Notebook/Palm Top Computers
3 V to 5 V, 5 V to 12 V Converters
9 V to 5 V, 12 V to 5 V Converters
LCD Bias Generators
Peripherals and Add-On Cards
Battery Backup Supplies
Cellular Telephones
Portable Instruments
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
相關PDF資料 |
PDF描述 |
|---|---|
| ADP1109AAN-12 | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:7; Connector Shell Size:16S; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight |
| ADP1109AAN-33 | Micropower Low Cost Fixed 3.3 V, 5 V, 12 V and Adjustable DC-to-DC Converter |
| ADP1109AAN-5 | Micropower Low Cost Fixed 3.3 V, 5 V, 12 V and Adjustable DC-to-DC Converter |
| ADP1109AAR-12 | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:85; Connector Shell Size:40; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight |
| ADP1109AAR-33 | GT 54C 54#16 SKT RECP |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADP1109 | 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 |
| ADP1109A | 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 |
| ADP1109AAN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADP1109AAN-12 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADP1109AAN-3.3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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