MAX712CSE-T Maxim Integrated Products, MAX712CSE-T Datasheet
MAX712CSE-T
Specifications of MAX712CSE-T
Related parts for MAX712CSE-T
MAX712CSE-T Summary of contents
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... Automatically Switch from Fast to Trickle Charge ♦ Linear Mode Power Control ♦ 5µA (max) Drain on Battery when Not Charging ♦ 5V Shunt Regulator Powers External Logic PART MAX712CPE MAX712CSE MAX712C/D MAX712EPE MAX712ESE MAX712MJE Ordering Information continued at end of data sheet. *Contact factory for dice specifications. ...
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NiCd/NiMH Battery Fast-Charge Controllers ABSOLUTE MAXIMUM RATINGS V+ to BATT- .................................................................-0.3V, +7V BATT- to GND ........................................................................±1V BATT+ to BATT- Power Not Applied............................................................±20V With Power Applied ................................The higher of ±20V or ±2V x (programmed cells) DRV to GND ..............................................................-0.3V, +20V FASTCHG ...
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ELECTRICAL CHARACTERISTICS (continued 10mA unless otherwise noted. Refer to the Typical Operating Circuit. All measurements are with respect MIN MAX BATT-, not GND.) PARAMETER FASTCHG Low Current FASTCHG ...
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NiCd/NiMH Battery Fast-Charge Controllers (T = +25°C, unless otherwise noted.) A MAX713 NiCd BATTERY CHARGING CHARACTERISTICS AT C RATE 1.55 ΔV CUTOFF V 1.50 Δt T 1.45 1. CHARGE TIME (MINUTES) MAX713 NiCd BATTERY-CHARGING CHARACTERISTICS AT C/2 ...
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PIN NAME Sets the maximum cell voltage. The battery terminal voltage (BATT+ - BATT-) will not exceed VLIMIT x 1 VLIMIT (number of cells). Do not allow VLIMIT to exceed 2.5V. Connect VLIMIT to VREF for normal operation. 2 BATT+ ...
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NiCd/NiMH Battery Fast-Charge Controllers Getting Started The MAX712/MAX713 are simple to use. A complete linear-mode fast-charge circuit can be designed in a few easy steps. A linear-mode design uses the fewest components and supplies a load while charging. 1) Follow ...
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Table 2. Programming the Number of Cells NUMBER PGM1 OF CELLS CONNECTION Open 3 REF 4 BATT Open 7 REF 8 BATT Open 11 REF 12 BATT Open ...
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NiCd/NiMH Battery Fast-Charge Controllers Detailed Description The MAX712/MAX713 fast charge NiMH or NiCd batter- ies by forcing a constant current into the battery. The MAX712/MAX713 are always in one of two states: fast charge or trickle charge. During fast charge, ...
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The MAX712/MAX713 can be configured so that voltage slope and/or battery temperature detects full charge. Figure 4 shows a charging event in which a battery is inserted into an already powered-up MAX712/MAX713. During time 1, the charger’s output voltage is ...
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NiCd/NiMH Battery Fast-Charge Controllers REF DRV VLIMIT D1 CELL_VOLTAGE GND CURRENT-SENSE AMPLIFIER PGM3 FAST_CHARGE 512 OPEN 0 256 REF 0 128 BATT BATT- R SENSE BATT- GND 1.25V BATT- ...
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Table 5. Trickle-Charge Current Determination from PGM3 FAST-CHARGE PGM3 RATE V+ 4C OPEN 2C REF C BATT- C/2 Nonstandard Trickle-Charge Configuration: Typical Operating Circuit 2 x Panasonic P-50AA 500mAh AA NiCd batteries C/3 fast-charge rate 264-minute timeout Negative voltage-slope cutoff ...
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NiCd/NiMH Battery Fast-Charge Controllers The voltage loop is stabilized by the output filter capacitor. A large filter capacitor is required only if the load is going to be supplied by the MAX712/MAX713 in the absence of a battery. In this ...
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REF R3 THI HOT R4 0.022μF TEMP +2.0V COLD TLO MAX712 MAX713 BATT- AMBIENT TEMPERATURE NOTE: FOR ABSOLUTE TEMPERATURE CHARGE CUTOFF, T2 AND T3 CAN BE REPLACED BY STANDARD RESISTORS. Figure 9a. Temperature Comparators TEMPERATURE REF T2 THI HOT +2.0V ...
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NiCd/NiMH Battery Fast-Charge Controllers Linear-Mode, High Series Cell Count The absolute maximum voltage rating for the BATT+ pin is higher when the MAX712/MAX713 are powered on. If more than 11 cells are used in the battery, the BATT+ input voltage ...
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150Ω 33kΩ 500Ω DRV BATT+ MAX712 MAX713 Figure 15. Cascoding to Accommodate High Cell Counts for Linear-Mode Circuits D1 100kΩ MAX712 MAX713 * 100kΩ V+ GND Figure 16. Shunting R for Efficiency Improvement SENSE ______________________________________________________________________________________ ...
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NiCd/NiMH Battery Fast-Charge Controllers Ordering Information (continued) PART TEMP RANGE MAX713CPE 0°C to +70°C MAX713CSE 0°C to +70°C MAX713C/D 0°C to +70°C MAX713EPE -40°C to +85°C MAX713ESE -40°C to +85°C MAX713MJE -55°C to +125°C *Contact factory for dice specifications. **Contact ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2008 Maxim Integrated Products ...