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ADP1073 データシート(PDF) 1 Page - Analog Devices

部品番号 ADP1073
部品情報  Micropower DC-DC Converter Adjustable and Fixed 5 V, 12 V
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

ADP1073 データシート(HTML) 1 Page - Analog Devices

  ADP1073_15 Datasheet HTML 1Page - Analog Devices ADP1073_15 Datasheet HTML 2Page - Analog Devices  
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To obtain the most recent version or complete data sheet, call our fax retrieval system at 1-800-446-6212 or visit our World Wide Web site at http://www.analog.com.
1
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Analog Devices assumes no obligation regarding future manufacture unless otherwise agreed to in writing.
PRELIMINAR
Y
TECHNICAL
DA
TA
a
ADP1073
Micropower DC-DC Converter
Adjustable and Fixed 5 V, 12 V
GENERAL DESCRIPTION
The ADP1073 is part of a family of step-up/step-down switch-
ing regulators which operates from an input supply voltage of as
little as 1.0 V. This extremely low input voltage allows the
ADP1073 to be used in applications that require using a single
cell battery as the primary power source.
The ADP1073 can be configured to operate in either step-up or
step-down mode; but for input voltages greater than 3 V, the
ADP1173 is recommended.
An auxiliary gain amplifier can serve as a low-battery detector or
linear regulator. Quiescent current on the ADP1073-5 is only
135
µA unloaded, making it ideal for systems where long battery
life is required.
The ADP1073 can deliver 40 mA at 5 V from an input voltage
range as low as 1.25 V, or 10 mA at 5 V from a 1.0 V input.
Current limiting is available by adding an external resistor. Bat-
tery protection circuitry keeps reverse currents to safe levels at
reverse supply voltages of up to 1.6 V.
FEATURES
Operates at Supply Voltages from 1.0 V to 30 V
Ground Current: 95
A
Works in Step-Up or Step-Down Mode
Very Few External Components Required
Low-Battery Detector On Chip
User-Adjustable Current Limit
Internal 1 A Power Switch
Fixed and Adjustable Output Voltage Versions
8-Pin DIP or SO-8 Package
APPLICATIONS
Single-Cell to 5 V Converters
Laptop and Palmtop Computers
Pagers
Cameras
Battery Backup Supplies
Cellular Telephones
Portable Instruments
4 mA–20 mA Loop Powered Instruments
Hand-Held Inventory Computers
Battery-Powered
,
,
Particle Detectors
FUNCTIONAL BLOCK DIAGRAM
DRIVER
ILIM
SW1
SW2
VIN
GND
SET
AO
GAIN BLOCK/
ERROR AMP
COMPARATOR
A1
A2
FB
1.245V
REFERENCE
OSCILLATOR
ADP1073
ORDERING GUIDE
Output
Package
Package
Model
Voltage
Description
Option*
ADP1073AN
ADJ
PDIP
N-8
ADP1073AR
ADJ
SOIC
SO-8
ADP1073AN-5
5 V
PDIP
N-8
ADP1073AR-5
5 V
SOIC
SO-8
ADP1073AN-12
12 V
PDIP
N-8
ADP1073AR-12
12 V
SOIC
SO-8
*For outline information see Package Information section.
Small Outline Package
(SO-8)
AO
ILIM
SW1
GND
VIN
SW2
*FIXED VERSIONS
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
ADP1073
FB (SENSE)*
SET
Plastic DIP Package
(N-8)
AO
ILIM
SW1
GND
VIN
SW2
*FIXED VERSIONS
1
2
3
4
8
7
6
5
ADP1073
TOP VIEW
(Not to Scale)
FB (SENSE)*
SET
PIN CONFIGURATIONS
REV. 0
OBSOLETE


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