General Description AS1101/AS1102/AS1103/AS1104 drivers designed
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Low-Dropout Drivers
General Description
AS1101/AS1102/AS1103/AS1104 drivers designed match current source bias color LED, including white blue. devices drive high-current LEDs, current programmable using external resistor (RSET). AS1101 currents ISET (per LED, typ) cathode voltage (VSAT) 150mV ISET (typ) VSAT where ISET current through RSET connected CTRL. AS1102, AS1103, AS1104 currents ISET (per LED, typ) VSAT 150mV ISET (typ) VSAT AS1101, AS1102, AS1104 incorporate chipenable feature When devices disabled, supply current drops less than 1µA. AS1101, AS1102, AS1103 available 6-pin SC70 package; AS1104 available 8-pin MSOP package.
Features
Drivers Parallel-Connected LEDs Ultra-Low Voltage Drop: Less Than 150mV (for Liion Battery Support) Analog Brightness Control 80mA (AS1101) 40mA (AS1102, AS1103, AS1104) Electromagnetic Interference, SwitchingNoise Current-Matching Requires External Components Active-Low Shutdown Mode (AS1101, AS1102, AS1103) Shutdown-Current: Less Than SC70-6 Package (AS1101, AS1102, AS1103) MSOP-8 Package (AS1104)
Applications
AS110x devices ideal displays keyboard backlights, well lighting management units battery powered audio devices such players, mobile cordless phones, PDAs, portable players, consumer electronics.
Diode Control with Enable
Figure Typical Application Diagrams
Diode Control with Enable
I1/I2 VSAT ISET VSET (3V) RSET CTRL
I3/I4 ISET VSET (3V)
VSAT
AS1101
RSET CTRL
AS1102
ENABLE
ENABLE
Diode Control
Diode Control with Enable
VSAT ISET VSET (3V) RSET CTRL
ISET VSET (3V)
VSAT
AS1103
RSET CTRL
AS1104
ENABLE
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Pinout
Assignments
Figure Assignments (Top View)
CTRL
CTRL
CTRL
I1/I2
AS1101
I3/I4
AS1102
AS1103
6-Pin SC70
CTRL
AS1104
8-Pin MSOP
Descriptions
Table Descriptions Number Name CTRL (see Figure Connect cathode LED. Connect cathode LED. Connect cathode LED. Connect cathode LED. Ground Device Enable Input. Description Sets current; connect external resistor.
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Absolute Maximum Ratings
Stresses beyond those listed Table cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those listed Electrical Characteristics page implied. Exposure absolute maximum rating conditions extended periods affect device reliability. Table Absolute Maximum Ratings Parameter VI1, VI2, VI3, VI4, CTRL Voltage Power Dissipated Device TAMB 85°C Steady State Current Package Body Temperature Junction Temperature Storage Temperature Electrostatic Discharge Protection (ESD) Level
-0.3
Unit
Comment
SC70-6 MSOP-8
Human Body Model; Norm: MIL-STD883E 3015 methods.
reflow peak soldering temperature (body temperature) specified according IPC/JEDEC J-STD-020C "Moisture/Reflow Sensitivity Classification Non-Hermetic Solid State Surface Mount Devices".
Operating Conditions
Table Recommended Operating Conditions Parameter Cathode Voltage Enable Voltage Mode Enable Voltage Mode Ambient Temperature
0.15
Unit
Comments
applicable AS1103.
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Electrical Characteristics
AS1101 Electrical Characteristics
TAMB 25°C (unless otherwise noted). Table Electrical Characteristics AS1101 Parameter ISET Range Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio LED-to-LED Current Matching ISET Mode Symbol ISET OCMR OCMR OCMR OCMR OCMR OCMR OCMR OCMR OCMR Match ISET,OFF Conditions ISET 25µA, VSAT 150mV, ISET 40µA, VSAT 150mV, ISET 75µA, VSAT 150mV, ISET 25µA, VSAT 600mV, ISET 40µA, VSAT 600mV, ISET 75µA, VSAT 600mV, ISET 25µA, VSAT 1000mV, ISET 40µA, VSAT 1000mV, ISET 75µA, VSAT 1000mV, VCTRL VSAT VCTRL VSAT TAMB VCTRL VSAT Peak Efficiency
Units
Mode
IIN,OFF
Efficiency (VIN VSAT)/VIN. Information parameter, guaranteed design.
AS1102, AS1103, AS1104 Electrical Characteristics
TAMB 25°C (unless otherwise noted). Table Electrical Characteristics AS1102, AS1103, AS1104 Parameter ISET Range Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio Output Current Multiplication Ratio www.austriamicrosystems.com Symbol ISET OCMR OCMR OCMR OCMR OCMR OCMR OCMR OCMR OCMR Conditions ISET 25µA, VSAT 150mV, ISET 40µA, VSAT 150mV, ISET 75µA, VSAT 150mV, ISET 25µA, VSAT 600mV, ISET 40µA, VSAT 600mV, ISET 75µA, VSAT 600mV, ISET 25µA, VSAT 1000mV, ISET 40µA, VSAT 1000mV, ISET 75µA, VSAT 1000mV, Revision Units
AS1101/AS1102/AS1103/AS1104 Data Sheet
Table Electrical Characteristics AS1102, AS1103, AS1104 Parameter LED-to-LED Current Matching ISET Mode
Symbol Match ISET,OFF
Conditions VCTRL VSAT VCTRL VSAT TAMB 25°C VCTRL VSAT
Units
Mode
IIN,OFF
Peak Efficiency
applicable AS1103. Efficiency (VIN VSAT) VIN. Information parameter, guaranteed design.
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Typical Performance Characteristics
Figure Current VCTRL
Figure Current vs.VSET; RSET
ISET (µA)
ISET (µA)
VCTRL Figure AS1101 ILED VSAT
ISET 50µA
VSET Figure AS1102, AS1103, AS1104 ILED VSAT
ISET 100µA
ILED (mA)
ILED (mA)
ISET 25µA
ISET 50µA
ISET 25µA
VSAT Figure AS1101 OMCR ISET
VSAT Figure AS1102, AS1103, AS1104 OMCR ISET
OCMR
OCMR
ISET (µA)
ISET (µA)
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Figure AS1102, AS1103, AS1104 ILED RSET, VSET
VSAT 0.5V VSAT 0.5V VSAT 0.6V VSAT 0.6V
Figure AS1102, AS1103, AS1104 ILED RSET; VSET
VSAT
VSAT 0.6V
ILED (mA)
VSAT 0.4V VSAT 0.4V
VSAT 0.3V VSAT 0.3V
ILED (mA)
VSAT 0.3V
VSAT 0.15V
RSET
Figure AS1101 ILED RSET; VSET
VSAT 0.15V VSAT 0.30V VSAT 0.25V
RSET
Figure ILED Temp; VLED -0.25V, ISET 50µA
12.5
ILED (mA)
VSAT 0.10V VSAT 0.05V
ILED (mA)
VSAT 0.20V
11.5
RSET
Figure AS1101 ILED ISET
Temperature (°C)
Figure AS1102, AS1103, AS1104 ILED ISET
ILED (mA)
ILED (mA)
ISET (µA)
ISET (µA)
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Figure AS1101 RSET
AS11011
Figure AS1102, AS1103, AS1104 ILED
Type Type
ILED (mA)
RSET
ILED (mA)
Figure Control Voltage Transient Response
Figure Enable Voltage Transient Response
Current
Current
10mA/Div
Enable Voltage
CTRL Voltage
2V/Div
1µs/Div
1µs/Div
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2V/Div
10mA/Div
AS1101/AS1102/AS1103/AS1104 Data Sheet
Application Information
Figure Typical Application Diagrams
Diode Control with Enable Diode Control with Enable
I1/I2 VSAT ISET VSET (3V) RSET CTRL
I3/I4 ISET VSET (3V)
VSAT
AS1101
RSET CTRL
AS1102
ENABLE
ENABLE
Diode Control
Diode Control with Enable
VSAT ISET VSET (3V) RSET CTRL
ISET VSET (3V)
VSAT
AS1103
RSET CTRL
AS1104
ENABLE
Setting Current
current going into LEDs approximately OCMR times greater then current ISET. current controlled VSET RSET (see Figure according formula:
ILED OCMR (VSET VCTRL)/RSET
VSET specific current, value RSET determined using graphs shown Figure Figure Figure page other option, value ISET determined using graph Figure page
Note: brightness also adjusted driving ENABLE CTRL with signal.
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Package Drawings Markings
Figure SC70-6 Package
Notes:
dimensions millimeters. Dimensions inclusive plating. Dimensions exclusive mold flash metal burrs. specifications comply with JEITA SC88 JEDEC-MO-203.
Symbol
1.80 0.15 1.15 1.80 0.10 0.80 0.00 0.80 0.10 0.10 0.26
0.65 2.20 0.30 1.35 2.40 0.40 1.00 0.10 1.10 0.18 0.30 0.46
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Figure MSOP-8 Package
Symbol
Millimeters
Tolerance
Symbol
Millimeters
Tolerance
Notes:
1.10 0.10 0.86 3.00 2.95 4.90 3.00 2.95 0.51 0.51 0.15 0.15 0.31 0.41
±0.05 ±0.08 ±0.10 ±0.10 ±0.15 ±0.10 ±0.10 ±0.13 ±0.13 +0.15 -0.08 +0.15 -0.08 ±0.08 ±0.08
0.33 0.30 0.18 0.15 0.55 0.95 0.10 0.08 0.25 .525
+0.07 -0.08 ±0.05 ±0.05 +0.03 -0.02 ±0.15
dimensions millimeters (angle degrees), unless otherwise specified. Datums determined datum plane Dimensions determined datum plane Dimensions package bottom package. Cross section determined 0.13 0.25mm from lead tip. Dimensions include mold flash, protrusion, gate burrs. Dimension include interlead flash protrusion.
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Ordering Information
Part Number Marking Description Package Type Delivery Form
AS1101-T AS1102-T AS1103-T AS1104-T AS1104
Dual driver with enable. Triple driver with enable. Quad driver. Quad driver with enable. MSOP-8 Tape Reel Tubes SC70-6 Tape Reel
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AS1101/AS1102/AS1103/AS1104 Data Sheet
Copyrights
Copyright 1997-2007, austriamicrosystems Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered rights reserved. material herein reproduced, adapted, merged, translated, stored, used without prior written consent copyright owner. products companies mentioned trademarks registered trademarks their respective companies.
Disclaimer
Devices sold austriamicrosystems covered warranty patent indemnification provisions appearing Term Sale. austriamicrosystems makes warranty, express, statutory, implied, description regarding information forth herein regarding freedom described devices from patent infringement. austriamicrosystems reserves right change specifications prices time without notice. Therefore, prior designing this product into system, necessary check with austriamicrosystems current information. This product intended normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, high reliability applications, such military, medical life-support lifesustaining equipment specifically recommended without additional processing austriamicrosystems each application. shipments less than parts manufacturing flow might show deviations from standard production flow, such test flow test location. information furnished here austriamicrosystems believed correct accurate. However, austriamicrosystems shall liable recipient third party damages, including limited personal injury, property damage, loss profits, loss use, interruption business indirect, special, incidental consequential damages, kind, connection with arising furnishing, performance technical data herein. obligation liability recipient third party shall arise flow austriamicrosystems rendering technical other services.
Contact Information
Headquarters austriamicrosystems A-8141 Schloss Premstaetten, Austria
Tel: 3136 Fax: 3136
Sales Offices, Distributors Representatives, please visit:
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