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ADP1111ARZ-3.3

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
REV. 0
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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
ADP1111
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
Micropower, Step-Up/Step-Down SW
Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V
FUNCTIONAL BLOCK DIAGRAMS
DRIVER
I
LIM
SW1
SW2
V
IN
GND
SET
A0
GAIN BLOCK/
ERROR AMP
COMPARATOR
A1
A2
FB
1.25V
REFERENCE
OSCILLATOR
ADP1111
DRIVER
I
LIM
SW1
SW2
V
IN
GND
SET
A0
GAIN BLOCK/
ERROR AMP
COMPARATOR
A1
A2
SENSE
1.25V
REFERENCE
OSCILLATOR
ADP1111-5
ADP1111-12
R1 R2 220k
FEATURES
Operates from 2 V to 30 V Input Voltage Range
72 kHz Frequency Operation
Utilizes Surface Mount Inductors
Very Few External Components Required
Operates in Step-Up/Step-Down or Inverting Mode
Low Battery Detector
User Adjustable Current Limit
Internal 1 A Power Switch
Fixed or Adjustable Output Voltage
8-Pin DIP or SO-8 Package
APPLICATIONS
3 V to 5 V, 5 V to 12 V Step-Up Converters
9 V to 5 V, 12 V to 5 V Step-Down Converters
Laptop and Palmtop Computers
Cellular Telephones
Flash Memory VPP Generators
Remote Controls
Peripherals and Add-On Cards
Battery Backup Supplies
Uninterruptible Supplies
Portable Instruments
GENERAL DESCRIPTION
The ADP1111 is part of a family of step-up/step-down switch-
ing regulators that operates from an input voltage supply of 2 V
to 12 V in step-up mode and up to 30 V in step-down mode.
The ADP1111 can be programmed to operate in step-up/step-
down or inverting applications with only 3 external components.
The fixed outputs are 3.3 V, 5 V and 12 V; and an adjustable
version is also available. The ADP1111 can deliver 100 mA at
5 V from a 3 V input in step-up mode, or it can deliver 200 mA
at 5 V from a 12 V input in step-down mode.
Maximum switch current can be programmed with a single
resistor, and an open collector gain block can be arranged in
multiple configuration for low battery detection, as a post linear
regulator, undervoltage lockout, or as an error amplifier.
If input voltages are lower than 2 V, see the ADP1110.
REV. A
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©1996–2009 Analog Devices, Inc. All rights reserved.
ADP1111* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
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DOCUMENTATION
Data Sheet
• ADP1111: Micropower, Step-Up/Step-Down SW
Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V Data Sheet
Product Highlight
• DC-to-DC Switching Regulator IC Solutions (10/06)
TOOLS AND SIMULATIONS
• ADIsimPower™ Voltage Regulator Design Tool
DESIGN RESOURCES
• ADP1111 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
DISCUSSIONS
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SAMPLE AND BUY
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TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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–2–
REV. 0
ADP1111–SPECIFICATIONS
Parameter Conditions V
S
Min Typ Max Units
QUIESCENT CURRENT Switch Off I
Q
300 500 μA
INPUT VOLTAGE Step-Up Mode V
IN
2.0 12.6 V
Step-Down Mode 30.0 V
COMPARATOR TRIP POINT
VOLTAGE ADP1111
1
1.20 1.25 1.30 V
OUTPUT SENSE VOLTAGE ADP1111-3.3 V
OUT
3.13 3.30 3.47 V
ADP1111-5
2
4.75 5.00 5.25 V
ADP1111-12
2
11.40 12.00 12.60 V
COMPARATOR HYSTERESIS ADP1111 8 12.5 mV
OUTPUT HYSTERESIS ADP1111-3.3 21 50 mV
ADP1111-5 32 50 mV
ADP1111-12 75 120 mV
OSCILLATOR FREQUENCY f
OSC
54 72 88 kHz
DUTY CYCLE Full Load DC 43 50 65 %
SWITCH ON TIME I
LIM
Tied to V
IN
t
ON
57 9 μs
SW SATURATION VOLTAGE T
A
= +25°C
STEP-UP MODE V
IN
= 3.0 V, I
SW
= 650 mA V
SAT
0.5 0.65 V
V
IN
= 5.0 V, I
SW
= 1 A 0.8 1.0 V
STEP-DOWN MODE V
IN
= 12 V, I
SW
= 650 mA 1.1 1.5 V
FEEDBACK PIN BIAS CURRENT ADP1111 V
FB
= 0 V I
FB
160 300 nA
SET PIN BIAS CURRENT V
SET
= V
REF
I
SET
270 400 nA
GAIN BLOCK OUTPUT LOW I
SINK
= 300 μA
V
SET
= 1.00 V V
OL
0.15 0.4 V
REFERENCE LINE REGULATION 5 V ≤ V
IN
≤ 30 V 0.02 0.075 %/V
2 V ≤ V
IN
≤ 5 V 0.4 %/V
GAIN BLOCK GAIN R
L
= 100 kΩ
3
A
V
1000 6000 V/V
CURRENT LIMIT T
A
= +25°C
220 Ω from I
LIM
to V
IN
I
LIM
400 mA
CURRENT LIMIT TEMPERATURE
COEFFICIENT –0.3 %/°C
SWITCH OFF LEAKAGE CURRENT T
A
= +25°C
Measured at SW1 Pin
V
SW1
= 12 V 1 10 μA
MAXIMUM EXCURSION BELOW GND T
A
= +25°C
I
SW1
≤ 10 μA, Switch Off –400 –350 mV
NOTES
1
This specification guarantees that both the high and low trip points of the comparator fall within the 1.20 V to 1.30 V range.
2
The output voltage waveform will exhibit a sawtooth shape due to the comparator hysteresis. The output voltage on the fixed output versions will always be within
the specified range.
3
100 kΩ resistor connected between a 5 V source and the AO pin.
4
All limits at temperature extremes are guaranteed via correlation using standard statistical methods.
Specifications subject to change without notice.
(0ⴗC ≤ T
A
≤ +70ⴗC, V
IN
= 3 V unless otherwise noted)
REV. A
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADP1111ARZ-3.3

Mfr. #:
Buy ADP1111ARZ-3.3
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Micropwr Adj & Fixed 3.3V
Lifecycle:
New from this manufacturer.
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