AS1343 austriamicrosystems AG, AS1343 Datasheet
AS1343
Related parts for AS1343
AS1343 Summary of contents
Page 1
... During shutdown an output disconnect switch separates the input from the output. The AS1343 is ideal for LCD or OLED panels with low current requirements and can also be used in a wide range of other applications. The device is available in a low-profile TDFN-10 3x3mm package ...
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... Shutdown Disconnect Switch Out. Disconnects the input from the output during 7 SWOUT shutdown. Ground 8 GND +5.5 to +42V Output Voltage. This pin also powers the AS1343 after startup. 9 VOUT Bypass this pin to GND with a ≥4.7µF capacitor. Feedback Pin. Feedback input to the g tap to this pin. The output voltage can be adjusted from 5.5V to 42V by: 10 ...
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... AS1343 Datasheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional operation of the device at these or any other conditions beyond those indicated in istics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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... AS1343 Datasheet - Electrical Characteristics 3.6V -40 to +85ºC (unless otherwise specified). Typ values are AMB Table 3. Electrical Characteristics Symbol Parameter Minimum Start-Up Voltage V Supply Voltage CC V Output Voltage Range ...
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... AS1343 Datasheet - Typical Operating Characteristics Parts used for measurments: 6.8µH (MOS6020-682) Inductor, 10µF (GRM21BR60J106KE19) C (GRM32ER71H475KA88) C (PMEG4010BEA) D OUT, Figure 3. Efficiency vs. Output Current ...
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... AS1343 Datasheet - Figure 9. Output Voltage vs. Temperature; V =18V OUT 18.2 18.1 18 17.9 17.8 -45 -30 - Temperature (°C) Figure 11. Output Voltage vs. Load Current; V =12V, V =1.5V, (load regualtion) OUT IN 12.5 12.4 12.3 12.2 12.1 12 11.9 11.8 11.7 11.6 11 Output Current (mA) Figure 13 ...
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... AS1343 Datasheet - Figure 15. Shutdown Current vs 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 0.9 1.2 1.5 1.8 2.1 2.4 2.7 Input Voltage (V) Figure 17. Switching Frequency vs. Temperature 1.1 1.05 1 0.95 0.9 -45 -30 - Temperature (°C) Figure 19. Quiescent Current vs 21.5 21 20.5 20 0.9 1.2 1.5 1.8 2.1 2.4 2.7 Input Voltage (V) www ...
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... AS1343 Datasheet - Figure 21. Transient Line Regulation 18V 1mA OUT LOAD 500µs/Div Figure 23. Output Voltage Ripple 18V 1mA OUT OUT 1.5V IN 1µs/Div Figure 25. Load Transient Response ON ...
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... Datasheet - Detailed Description The AS1343 features a current limiting circuitry, a fixed-frequency PWM architecture, power-OK circuitry, thermal pro- tection, and an automatic powersave mode in a tiny package, and maintains high efficiency at light loads. Figure 27. AS1343 - Block Diagram with Shutdown Disconnect Switch Input Voltage 0 ...
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... Application Information Shutdown and Output Discharge A logic low on the EN pin shuts down the AS1343 and a logic high on the EN pin powers on the device. In shutdown mode the supply current drops to below 3µA and the POK pin is set to high impedance to maximize battery life. When the battery disconnect switch is used, the battery is disconnected from the output and the output is discharged down to 0V ...
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... AS1343 Datasheet - LED Power Supply Application The AS1343 can also be used for driving LEDs. Just simply connect the LEDs between the pins V Figure 29). Figure 29. LED Supply Application ...
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... AS1343 Datasheet - Inductor Selection For the external inductor, a 4.7µH or 6.8µH inductor will usually suffice. Minimum inductor size is dependant on the desired efficiency and output current. Inductors with low core losses and small DCR at 1MHz are recommended. It’s also recommendet to choose an inductor which can handle at least 1 ...
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... AS1343 Datasheet - Capacitor Selection A 10µF capacitor is recommend for C IN mended. X5R and X7R ceramic capacitors are recommend as they retain capacitance over wide ranges of voltages and temperatures. Output Capacitor Selection Low ESR capacitors should be used to minimize V they have extremely low ESR and are available in small footprints. A 4.7 to 10µ ...
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... AS1343 Datasheet - Diode Selection A Schottky diode must be used to carry the output current into the Cout and load during the NMOS switch-off time. Note: Do not use ordinary rectifier diodes, since the slow recovery times will compromise efficiency. ...
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... AS1343 Datasheet - Package Drawings and Markings The devices are available in a TDFN-10 3x3mm package. Figure 34. TDFN-10 3x3mm Package D PIN 1 INDEX AREA aaa C 2x (D/2 xE/2) TOP VIEW e DETAIL B ODD TERMINAL SIDE ...
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... Ordering Information The device is available as the standard products shown in Table 8. Ordering Information Model Marking AS1343A-BTDT-10 ASQN Converter, Automatic Power Save, 1MHz Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at www ...
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... AS1343 Datasheet Copyrights Copyright © 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...