U2403B ATMEL Corporation, U2403B Datasheet
U2403B
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U2403B Summary of contents
Page 1
... Charge Timer Description The U2403B is a monolithic, integrated-bipolar circuit which can be used in applications for time-controlled, constant-current charge. Selection of charge current versus timing is carried out by using the external circuit at Pins 2, 3 and 4. For high current requirement, an external transistor is recommended in series with the battery ...
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... Ordering Information Extended Type Number U2403B-x U2403B-xFP U2403B-xFPG3 Pin Description U2403B Sense 3 6 Osc 4 5 Figure 2. Pinning Pin 1, Collector Voltage V 1 Pin open collector output. When V charge cycle is switched off until it is above the supply voltage, as shown in figure 6. Pin 2, Shunt Emitter The constant current source is supplied by the internal operational amplifier ...
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... U2403B (supply current Frequency C (pF) f (Hz) 4 osc 270 6213 330 470 330 4660 470 680 470 ...
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... U2403B (12) start Battery inserted Turn on V > LED “ON” 2 Timer start Test V GND Open S mode Divider yes T > max no yes V < 3 Interrupt charging LED Interrupt Continuous charging LED Continuous timing End of timing yes LED “OFF” 2 LED “ON” 1 Trickle charge mode ...
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... Pin 3 Pin 4 Pin 5 Pin 8 Voltages Pins and 8 Pin 2 Pin 4 Junction temperature Ambient temperature Storage temperature range Thermal Resistance Parameters Junction ambient DIP8 SO8 on PC-board SO8 on ceramic SO8 on ceramic with thermal compound Rev. A3, 08-Nov-99 U2403B Symbol Value 100 s I 300 1 – I 310 ...
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... U2403B Electrical Characteristics = reference point Pin 7 (GND), unless otherwise specified amb Parameters Test Conditions / Pins Supply voltage limitation Supply current Voltage monitoring Turn-on threshold Turn-off threshold Charge-mode indicator (LED) LED current LED saturation voltage Leakage current Collector terminal, figure 6 Open collector current ...
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... The advantage of the system is that if sags of short duration appear on the mains voltage or if the trans- formers used are too small, the charge duration is increased, but the charge capacity remains the same, see figure Counting timer –V 1 Counting timer Figure 6. Charge duration – U2403B (12) ...
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... (12) Basic Equations Nominal Charge Current Trickle Current Typical values are 100 mV 6 supply 8 9 390 2.2 nF Figure 7. Standard application – 20 mA) ch where V = 1.48 V (typ 4 READY LED Charge U2403B LED Rev. A3, 08-Nov-99 ...
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... As the 5 W temperature cannot be monitored in this case a heat sink 6 with a resonable size should be used for safe operation. Test mode switch S tion check. U2403B – – 0. BYW52 READY LED U2403B Charge R C LED LED can be used for accelerated produc (12) ...
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... = 100 F nF 330 f(temp.) depends on number of cells 11 Figure 9. U2403B for higher supply voltage with integrated temperature monitoring No of Cells (12) can be reached, the transistor, T Smax switched on and there is current flow into Pin 5, normal charge is terminated green R TLHG5400 2 LED2 ...
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... DIN specifications 4 5.2 4.8 5.00 4.85 3.7 1.4 0.25 3.8 0.10 6.15 3.81 5.85 5 technical drawings according to DIN specifications 4 U2403B 0.2 11 (12) ...
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... U2403B Ozone Depleting Substances Policy Statement It is the policy of TEMIC Semiconductor GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment ...