U2403B-MFPG3
U2403B-MFPG3 Datasheet
Charge Timer IC U2403B
| Part | Datasheet |
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U2403B-MFPG3 |
U2403B-MFPG3 (pdf) |
| Related Parts | Information |
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U2403B-MFP |
U2403B-MFP |
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U2403B-M |
U2403B-M |
| PDF Datasheet Preview |
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| • Constant Charge Current • 3 h - 24 h Charge Time Programmable • Low-cost DC Regulator • Overtemperature Protection • Charge-mode Indication • Operation Starts at the Moment of Battery Insertion • Fast Charge-time Test Mode • Cordless Telephones • Low-cost Battery-charge Timers • Entertainment Equipment Charge Timer IC U2403B The U2403B is a monolithic integrated bipolar circuit which can be used in applications where time-controlled, constant current charge is required. The selection of the charge current versus timing is carried out by using the external circuit at pins 2, 3 and For high current requirements, an external transistor is recommended in series with the battery. To protect the IC against high power loss typically > 140°C , the oscillator will be shut down when the reference voltage is switched off 0 V . The latter also takes place when there is a saturation caused by collector voltage at pin When the overtemperature has disappeared and the collector voltage at pin 1 has exceeded the supply voltage V1 > VS , charge time operation continues see flow chart in Figure 4 on page Figure Block Diagram with External Circuit Power supply AC/DC Battery inserted LED2 Charge R5 LED LED1 Ready Charge mode indicator Power supply VS = to 12 V Test mode 5 STM 140°C 2 Shunt Timer and control logic VRef = V/0.1 V/0 V VRef + - RC oscillator Sense 2 U2403B Pin Configuration Figure Pinning DIP8/SO8 8 LED V2 2 SENSE 3 U2403B 7 GND 6 VS OSC 4 5 STM U2403B Pin Description Function Collector terminal Shunt emitter terminal Amplifier sense input Oscillator input Test-mode switch Supply voltage Reference point, GND Charge-mode indicator Pin 1, Collector Voltage V1 Pin 1 is an open-collector output. When V1 3 V, the charge cycle will be switched off until it has reached a value higher than the supply voltage, as shown in Figure 6 on page Pin 2, Shunt Emitter Pin 3, Amplifier Sense Input Inverted The constant current source is supplied by the internal operational amplifier. The voltage across R3 is determined via the internal reference source. Ich = V3/R3 V3 = Vsense The voltage-regulated current source has a closed loop at pin 2, pin 3, and resistor R3. Pin 4, Oscillator Input R4, The selection of the current charge versus timing is carried out by using the external cir- cuit at pins 2, 3, and Typical values are given in Table 1 on page Pin 5, Test-mode Switch for Charging Time Ordering Information Extended Type Number U2403B-x U2403B-xFP U2403B-xFPG3 Package DIP8 SO8 Remarks Tube Taped and reeled Package Information Package DIP8 Dimensions in mm technical drawings according to DIN specifications U2403B Package SO8 Dimensions in mm technical drawings according to DIN specifications 16 U2403B Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel 44 1355-803-000 Fax 44 1355-242-743 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel 49 71-31-67-0 Fax 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel 33 4-76-58-30-00 Fax 33 4-76-58-34-80 Literature Requests Disclaimer Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. Atmel Corporation All rights reserved. and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be the trademarks of others. Printed on recycled paper. |
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