U2407B TEMIC Semiconductors, U2407B Datasheet
U2407B
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U2407B Summary of contents
Page 1
... Simple Controller for Fast Charge Systems Description The bipolar IC U2407B is a fast charge battery controller for drained NiCd/ NiMH batteries. Apart from phase control identical with U2405B, but has four LED outputs. The IC enables the designer to create an efficient and economic charge system. The U2407B incorporates ...
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... Battery 0.2 Pin Description Package: DIP16/ SO16 GND 1 2 LED2 LED3 max Sensor 10618 2 (16 2 2.2 k LED1 14 10 LED2 2 LED3 3 LED4 100 U2407B Batt Sensor Figure 2. Scheme for DC linear regulation Pin Symbol 1 GND 16 Output 2 LED2 3 LED3 15 LED4 max 7 Sensor V 13 Ref ...
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... General Description The integrated circuit, U2407B, is designed for charging Nickel-Cadmium (NiCd) and Nickel-Metal-Hydride (NiMH) batteries. Fast charging results in voltage lobes when fully charged (figure 3). It supplies two 2 2 identifications ( i. e V/dt , and – charge operation at the proper time. As compared to the existing charge concepts where the ...
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... U2407B Flow Chart Explanation, f (Figures 2, 3 and 4) Battery pack insertion disables the voltage lock at battery detection input Pin 9. All functions in the integrated circuit are reset. For further description, DIP-pinning is taken into consideration. D Battery Insertion and – V Monitoring After battery insertion fast charge I ...
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... V/dt monitoring activated yes Batt. inserted *) yes Batt temp range? no –dV disconnect LED2 on Trickle charge 1/256 I O yes yes Batt. inserted no *) Figure 4. Flow chart U2407B yes no t > 10 min ch LED3 off V/dt disconnect ? LED2 on LED4 on Top off charge 1 > 20 min ...
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... U2407B Battery Voltage Measurement The battery voltage measurement at Pin 9 (ADC- converter) has a range which means a battery pack containing two cells can be connected without a voltage divider. If the AD converter is overloaded (V Batt switch-off occurs. The fast charge cycle is terminated by automatically changing to trickle charge. Precaution should be taken that under specified charge ...
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... A second counter in the same configuration is operating in parallel with eight clock cycles delay, to reduce the total cut-off delay, from 16 test cycles to eight test cycles. Charge T= 20.48 s U2407B D V cutt-off is – slope). This counter is 94 8693 t ...
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... U2407B Temperature Control, Figure 7 When the battery temperature is not inside the specified temperature windows, the overal temperature control will not allow the charge process. Sensor short circuit or interruption also leads to switch-off (faulty mode). A permanent switch-off follows after a measurement period of 20. the temperature exceeds a specified level, which is denoted by a status of LED1 ...
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... S OFF V OFF S OFF Blinking 95 10672 LED1 (red) LED2 (green (LED1/ LED3) W OFF OFF Blinking 95 10673 U2407B Status > Batt Status OFF No battery (V > Batt Blinking Fast charge ON Top-off, trickle charge OFF All failure mode Status (LED2) OFF No battery (V > Batt OFF Fast charge ...
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... U2407B Top-off Charge Rate Reduction The current amplitude during top-off charge can be reduced as shown in figure 10. During top-off mode, both the LED4 output (Pin 15) and transistor T are on. The actual current amplitude is influenced with the help of resistor R , which is detected by the operational amplifier x input OP (Pin 5) ...
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... Pin 4 V 0.15 4 Pin Pin 4 –I 100 pause Pin Pin Pins 6 and Pins 6 and Pin 7 V 3.85 7 Pin 8 U2407B Value Unit 100 650 mW – +85 C 125 C – +125 C Maximum Unit 100 K/W Typ. Max. Unit 26 V 3.8 V 5.7 V 9.1 mA 6.5 6. ...
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... Pin Batt 3.85 v – 4.5 V Batt Batt V 4.8 Batt Batt Batt V hys Pin Pin osc V T(H) V T(L) I – 0 100 2 LED1 10 LED2 2 LED3 3 LED4 15 U2407B Output Batt 100 Sensor 4 510 Typ. Max. Unit 4 0.5 A 5.0 5 120 4 800 Hz " V 4.3 " GND ...
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... TELEFUNKEN Semiconductors Rev. A4, 05-Mar-97 Figure 13. Dual–slot charger U2407B 13 (16) ...
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... U2407B Package Information Package DIP16 (CEI) Dimensions in mm 1.60 0.58 0.64 0.38 Package DIP16 Dimensions in mm Alternative (16) 20.57 18.92 0.76 0.13 3.81 3.05 0.89 0.38 3.81 3.05 0.81 2.79 1.65 2.29 1.14 technical drawings according to DIN specifications 20.0 max 4.8 max 3 ...
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... Package Information Package SO16 Dimensions in mm 0.4 1. TELEFUNKEN Semiconductors Rev. A4, 05-Mar-97 10.0 9.85 1.4 0.25 0.10 6.15 8.89 5.85 9 technical drawings according to DIN specifications 8 U2407B 5.2 4.8 3.7 0.2 3.8 13036 15 (16) ...
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... U2407B Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic 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 ...