ADP3041ARU-REEL Analog Devices Inc, ADP3041ARU-REEL Datasheet

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ADP3041ARU-REEL

Manufacturer Part Number
ADP3041ARU-REEL
Description
IC PWM BOOST SWITCH-REG 20-TSSOP
Manufacturer
Analog Devices Inc
Type
Step-Up (Boost)r
Datasheet

Specifications of ADP3041ARU-REEL

Rohs Status
RoHS non-compliant
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
4.5 ~ 12 V
Current - Output
1.5A
Frequency - Switching
600kHz
Voltage - Input
2.5 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Power - Output
-
Other names
ADP3041ARU-REELTR
GENERAL DESCRIPTION
The ADP3041 is a fixed frequency, PWM step-up dc-to-dc
switching regulator with five buffers capable of 12 V boosted
output voltage in a TSSOP 20-lead package. It provides high
efficiency, low noise operation, and excellent dynamic response,
and is easy to use. The high switching frequency allows for small,
cost-saving, external inductive and capacitive components. The
ADP3041 operates in PWM current mode. The current limit
and the power switch are integrated completely on-chip.
Capable of operating from 2.5 V to 5.5 V input, the ADP3041
is ideal for thin-film transistor (TFT) liquid crystal display
(LCD) module applications, where local point-of-use power
regulation is required. Supporting output voltages down to 4.5 V,
the ADP3041 is ideal to generate today’s low voltage rails, pro-
viding the optimal solution in its class for delivering power
efficiently, responsively, and simply with minimal printed circuit
board area.
The ADP3041 integrates five buffers. Each buffer can deliver
35 mA output current and has rail-to-rail input and output
capability.
REV. D
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
FEATURES
600 kHz PWM Frequency
Fully Integrated 1.5 A Power Switch
3% Output Regulation Accuracy
Simple Compensation
Small Inductor and MLC Capacitors
300 A Quiescent Supply Current
90% Efficiency
Undervoltage Lockout
5 Buffers
TSSOP 20-Lead Package
Pb-Free Part
APPLICATIONS
TFT LCD Bias Supplies
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
AVCC
VCMI
G1I
G2I
G3I
G4I
NC
SD
FB
SS
TFT LCD Panel Power Module
REF
RAMP
SOFT START
GEN
OSC
FUNCTIONAL BLOCK DIAGRAM
g m
ERROR
AMP
© 2003 Analog Devices, Inc. All rights reserved.
COMP
COMPARATOR
AGND
R
F/F
S
Q
BIAS
ADP3041
IN
AMPLIFIER
CURRENT
SENSE
DRIVER
ADP3041
www.analog.com
SW
PGND
VCMO
G1O
G2O
G3O
G4O

Related parts for ADP3041ARU-REEL

ADP3041ARU-REEL Summary of contents

Page 1

FEATURES 600 kHz PWM Frequency Fully Integrated 1.5 A Power Switch 3% Output Regulation Accuracy Simple Compensation Small Inductor and MLC Capacitors 300 A Quiescent Supply Current 90% Efficiency Undervoltage Lockout 5 Buffers TSSOP 20-Lead Package Pb-Free Part APPLICATIONS TFT ...

Page 2

ADP3041–SPECIFICATIONS Parameter SUPPLY Input Voltage 2 Operating Current Quiescent Current Shutdown Current ERROR AMPLIFIER Feedback Voltage Accuracy Line Regulation FB Bias Current Overall Regulation OUTPUT SWITCH On Resistance Output Load Current Leakage Current Efficiency OSCILLATOR Oscillator Frequency Maximum Duty Cycle ...

Page 3

Parameter Symbol BUFFER INPUT CHARACTERISTICS Offset Voltage V Offset Voltage Drift Input Bias Current I Input Voltage Range Input Impedance Z Input Capacitance C OUTPUT CHARACTERISTICS Output Voltage High V Output Voltage Low V Continuous Output Current I Peak Output ...

Page 4

... Exposure to absolute maximum ratings for extended periods may affect device reliability. ORDERING GUIDE Temperature Model Range ADP3041ARU –40°C to +85°C 4 TSSOP-20 ADP3041ARUZ* –40°C to +85°C 4 TSSOP- Pb-free part PGND ADP3041 V IN ...

Page 5

4.5V < V < 16V –12 –9 –6 –3 0 INPUT OFFSET VOLTAGE (mV) TPC 1. Input Offset Voltage Distribution 300 250 200 ...

Page 6

ADP3041 150 135 120 105 4. TEMPERATURE ( C) TPC 7. Output Voltage Swing vs. Temperature (Small Signal) 0.9999 0.9997 0.9995 25 40 TEMPERATURE ( C) TPC 8. ...

Page 7

– 50mV rms IN –15 560 C = 40pF –20 –25 –30 –35 –40 100k 1M FREQUENCY (Hz) TPC 13. ...

Page 8

ADP3041 4.5V ≤ V ≤ 16V S 100 100 FREQUENCY (Hz) TPC 19. Voltage Noise Density vs. Frequency 4.5V < V < 16V S ...

Page 9

TIME (2 s/DIV) TPC 25. Large Signal Transient Response TIME (1 ...

Page 10

ADP3041 THEORY OF OPERATION Switching Regulator The ADP3041 is a boost converter driver that stores energy from an input voltage in an inductor and delivers that energy, augmented by the input load at a higher output voltage. It ...

Page 11

COMP is allowed to rise slowly until the control loop limits the voltage to that required for regulation. SS continues to rise and no longer affects COMP once soft start is complete. When SD goes low, an internal switch discharges ...

Page 12

ADP3041 As a rule, powdered iron cores saturate softly, whereas ferrite cores saturate abruptly. Open drum core inductors tend to saturate gradually and are low cost and small in size, making these types of inductors attractive in many applications. However, ...

Page 13

ERROR AMP COMP REF Figure 2. Compensation Components The boost regulator introduces a right half plane (RHP) zero. This zero behaves like a zero with respect to the gain but behaves like a pole with respect to ...

Page 14

ADP3041 the high frequency gain. Increasing C C tion zero frequency, which increases the stability but slows the transient response. Shutdown The ADP3041 shuts down to reduce the supply current µA maximum when the shutdown pin is ...

Page 15

Thin Shrink Small Outline Package [TSSOP] 0.15 0.05 COPLANARITY 0.10 REV. D OUTLINE DIMENSIONS (RU-20) Dimensions shown in millimeters 6.60 6.50 6. 4.50 4.40 4.30 6.40 BSC 1 10 PIN 1 0.65 1.20 BSC MAX 0.20 0.09 ...

Page 16

ADP3041 Revision History Location 12/03—Data Sheet changed from REV REV. D. Updated ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . ...

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