max2003cse Maxim Integrated Products, Inc., max2003cse Datasheet
max2003cse
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max2003cse Summary of contents
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... Trickle-Charge or Top-Off Charge Optional Discharge-Before-Charge Directly Drive Status LEDs Optional Top-Off Charge Ordering Information PART TEMP. RANGE MAX2003CPE 0°C to +70°C MAX2003CSE 0°C to +70°C MAX2003CWE 0°C to +70°C MAX2003C/D 0°C to +70°C MAX2003ACPE 0°C to +70°C MAX2003ACSE 0°C to +70°C MAX2003ACWE 0° ...
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NiCd/NiMH Battery Fast-Charge Controllers ABSOLUTE MAXIMUM RATINGS All Pins to V ...........................................................-0.3V, +6.0V SS Continuous Power Dissipation (T = +70°C) A Plastic DIP (derate 10.53mW/°C above +70°C) ...........842mW Narrow SO (derate 8.70mW/°C above +70°C) .............696mW Wide SO (derate 9.52mW/°C above ...
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ELECTRICAL CHARACTERISTICS (continued 4.5V to 5.5V, Figure 1, all measurements are with respect PARAMETER SYMBOL For DIS, TEMP and CHG, Logic-High Threshold V 0mA OH 0mA For DIS, TEMP and CHG, Logic-Low Threshold V 0mA ...
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NiCd/NiMH Battery Fast-Charge Controllers ______________________________________________________________Pin Description PIN NAME Charge-Enabled Mode Input—initiates fast-charge on a digital signal (see Detailed Description for operating 1 CCMD conditions). Discharge-Enable Mode Input—initiates discharge-before-charge on a digital signal (see Detailed 2 DCMD Description for operating conditions). ...
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Figure 1. Switched-Mode Operation for NiMH Batteries with T/ t Termination _______________________________________________________________________________________ NiCd/NiMH Battery Fast-Charge Controllers 5 ...
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NiCd/NiMH Battery Fast-Charge Controllers Detailed Description The MAX2003/MAX2003A is a fast-charge battery charg- er that uses several methods of charge termination. The device constantly monitors your choice of the following conditions to determine termination of fast-charge: • Negative Delta Voltage ...
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TM1 OSC TEMP DISPLAY CONTROL CHG CCMD CHARGE CONTROL DCMD STATE MACHINE DVEN DISCHARGE CONTROL DIS Figure 2. Block Diagram 2.0 1.8 1.6 1.4 1.2 1.0 0 CHARGE CAPACITY (% OF MAXIMUM) Figure 3. Voltage-Charge ...
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NiCd/NiMH Battery Fast-Charge Controllers Temperature Measurement The MAX2003/MAX2003A employs a negative tempera- ture-coefficient (NTC) thermistor to measure the bat- tery’s temperature. This temperature value can be used to determine start and termination of fast-charge. The two temperature conditions that can ...
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Table 2. Device Status on Power-Up if Battery is Already Present MAX2003/MAX2003A Status when CCMD DCMD Power is Applied • Fast-charge is initiated on power-up. Low Low • The device does not enter fast-charge immediately. Low High • Fast-charge is ...
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NiCd/NiMH Battery Fast-Charge Controllers operation, the SNS voltage ramps between 0.044V and 0.050V , which is 220mV and 250mV when (Figure 7). The average voltage at SNS, therefore, is 235mV, and can be used to calculate ...
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Negative Delta Voltage Termination The Negative Delta Voltage Termination (- V) method measures a negative delta voltage to determine termi- nation of fast-charge. After maximum charge is reached, the terminal voltage of NiCd batteries declines significantly, whereas the terminal voltage ...
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NiCd/NiMH Battery Fast-Charge Controllers Table 5. Charge Status Charge State CHG LED Status Battery Absent LED off LED on for 0.125sec, off for Charge Pending 1.375sec LED on for 1.375sec, off for Discharge-Before-Charge 0.125sec Fast-Charge LED on Charge Complete and ...
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Select Sense Resistor. The sense resistor deter- mines the rate at which the battery is fast-charged. The sense pin, SNS, has an average voltage of 235mV (see Detailed Description ) and, since the charge current ( known ...
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NiCd/NiMH Battery Fast-Charge Controllers From solving these simultaneous equations [( NTC10 NTC50 [( NTC10 CC TS10 T1 ...
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In order to provide high currents with minimum ripple, the device must function in the continuous-conduction mode. Figure 10 shows a current waveform of an inductor in the continuous-conduction mode (where the coil current never falls to zero). The average ...
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NiCd/NiMH Battery Fast-Charge Controllers Figure 11. Linear Mode to Charge NiCD Batteries with - V Termination 16 ______________________________________________________________________________________ ...
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Figure 12. Current-Limited Mode for NiMH Batteries with T/ t Termination ______________________________________________________________________________________ NiCd/NiMH Battery Fast-Charge Controllers 17 ...
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NiCd/NiMH Battery Fast-Charge Controllers current value must be sufficiently guardbanded to ensure the limiting factor is the SNS resistor, and not the transistor. In our example, the maximum current supplied by the Darlington will be guardbanded to 1.8A. Since the ...
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Chip Topography CCMD DIS DCMD V CC DVEN TM1 TM2 TS BAT SNS V TCO SS 0.086" (2.184mm) TRANSISTOR COUNT: 5514 SUBSTRATE CONNECTED ________________________________________________________Package Information ______________________________________________________________________________________ NiCd/NiMH Battery Fast-Charge Controllers MOD CHG 0.089" (2.261mm) TEMP MCV 19 ...
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NiCd/NiMH Battery Fast-Charge Controllers ___________________________________________Package Information (continued) 20 ______________________________________________________________________________________ ...