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What is ADP1110?

This electronic component, produced by the manufacturer "Analog Devices", performs the same function as "Micropower/ Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.3 V/ 5 V/ 12 V".


ADP1110 Datasheet PDF - Analog Devices

Part Number ADP1110
Description Micropower/ Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.3 V/ 5 V/ 12 V
Manufacturers Analog Devices 
Logo Analog Devices Logo 


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Micropower, Step-Up/Step-Down Switching
a Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V
ADP1110
FEATURES
Operates at Supply Voltages From 1.0 V to 30 V
Step-Up or Step-Down Mode
Minimal External Components Required
Low-Battery Detector
User-Adjustable Current Limiting
Fixed or Adjustable Output Voltage Versions
8-Pin DIP or SO-8 Package
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
FUNCTIONAL BLOCK DIAGRAMS
SET
ADP1110
A2
VIN
GAIN BLOCK/
ERROR AMP
220mV
REFERENCE
A1 OSCILLATOR
A0
ILIM
SW1
Q1
COMPARATOR
R2
R1 300k
DRIVER
GND
SENSE
SW2
ADP1110 Block Diagram—Fixed Output Version
SET
ADP1110
GENERAL DESCRIPTION
The ADP1110 is part of a family of step-up/step-down switch-
ing regulators that operate from an input voltage supply as little
as 1.0 V. This very low input voltage allows the ADP1110 to be
used in applications that use a single cell as the primary power
source.
The ADP1110 can be configured to operate in either step-up or
step-down mode, but for input voltages greater than 3 V, the
ADP1111 would be a more effective solution.
An auxiliary gain amplifier can serve as a low battery detector or
as a linear regulator.
The quiescent current of 300 µA makes the ADP1110 useful in
remote or battery powered applications.
A2
VIN
GAIN BLOCK/
ERROR AMP
220mV
REFERENCE
A1 OSCILLATOR
A0
ILIM
SW1
Q1
COMPARATOR
DRIVER
GND
FB
SW2
ADP1110 Block Diagram—Adjustable Output Version
The 70 kHz frequency operation also allows for the use of
surface-mount external capacitors and inductors.
Battery protection circuitry limits the effect of reverse current to
safe levels at reverse voltages up to 1.6 V.
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.
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., 1996

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ADP1110 equivalent
78
76
74
72
OSCILLATOR FREQUENCY
70
68
66
64
0 25 70
TEMPERATURE – ؇C
Figure 8. Oscillator Frequency vs. Temperature
9.0
8.9
8.8
8.7
8.6
8.5
8.4
8.3
8.2
0
SWITCH ON TIME
25
TEMPERATURE – ؇C
70
Figure 9. Switch ON Time vs. Temperature
66
65
64
63
DUTY CYCLE
62
61
60
59
0 25 70
TEMPERATURE – ؇C
Figure 10. Duty Cycle vs. Temperature
ADP1110
0.54
0.53
0.52
0.51
0.5
0.49
0.48
0.47
0
VIN = +1.5 @ ISWITCH = +0.5A
25
TEMPERATURE – ؇C
70
Figure 11. Switch ON Voltage Step-Down vs. Temperature
350
300
QUIESCENT CURRENT
250
200
150
100
50
0
0 25
TEMPERATURE – ؇C
70
Figure 12. Quiescent Current vs. Temperature
160
155
150
145
140
135
130
125
120
0
BIAS CURRENT
25
TEMPERATURE – ؇C
70
Figure 13. FB Pin Bias Current vs. Temperature
REV. 0
–5–


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Featured Datasheets

Part NumberDescriptionMFRS
ADP1110The function is Micropower/ Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.3 V/ 5 V/ 12 V. Analog DevicesAnalog Devices
ADP1110ANThe function is Micropower/ Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.3 V/ 5 V/ 12 V. Analog DevicesAnalog Devices
ADP1110AN-12The function is Micropower/ Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.3 V/ 5 V/ 12 V. Analog DevicesAnalog Devices

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