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MAX1501ETE Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1501ETE Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 15 page General Description The MAX1501 intelligent, constant-current, constant- voltage (CCCV), temperature-regulated battery charger charges a single lithium-ion (Li+) cell or three-cell NiMH/NiCd batteries. The device integrates the current- sense resistor, PMOS pass element, and thermal- regulation circuitry, while eliminating the reverse- blocking Schottky diode to create the simplest charging solution for hand-held equipment. The MAX1501 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast charge, top-off, and charge termination for single-cell Li+ or three-cell NiMH/NiCd batteries. Alternatively, the MAX1501 collaborates with a host microprocessor to determine the best charging algorithm. Proprietary thermal-regulation circuitry limits the die temperature when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the charger. The MAX1501 continually supplies a regulated output voltage under no-battery conditions, allowing battery changing. The device achieves high flexibility by providing an adjustable fast-charge current, top-off current, safety timer, and thermal-regulation setpoint. Other features include input power detection ( ACOK) and input under-/ overvoltage protection. The MAX1501 provides active- low control inputs. The MAX1501 accepts a 4.5V to 13V supply, but disables charging when the input voltage exceeds 6.5V, preventing excessive power dissipation. The MAX1501 operates over the extended temperature range (-40°C to +85°C) and is available in a compact 16-pin thermally enhanced 5mm x 5mm thin QFN package with 0.8mm profile. Applications Cellular and Cordless Phones PDAs Digital Cameras and MP3 Players USB Appliances Charging Cradles and Docks Bluetooth™ Equipment Features o Stand-Alone or Microprocessor-Controlled (µP) Linear 1-Cell Li+ or 3-Cell NiMH/NiCd Battery Charger o No FET, Reverse-Blocking Diode, or Current- Sense Resistor Required o 1.4A (max) Programmable Fast-Charge Current o +95°C, +115°C, and +135°C Proprietary Programmable Die Temperature Regulation Control o 4.5V to 13V Input Voltage Range with Input Overvoltage (OVLO) Protection Above 6.5V o Programmable Top-Off Current Threshold: 10%, 20%, or 30% of the Fast-Charge Current o Charge-Current Monitor for Fuel Gauging o Programmable Safety Timer (3, 4.5, or 6 hours) o Input Power Detection Output (ACOK) and Charge Enable Input ( CHGEN) o Automatic Recharge o Digital Soft-Start Limits Inrush Current o Charge Status Outputs for LEDs or µP Interface Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-2800; Rev 0; 4/03 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. PART TEMP RANGE PIN-PACKAGE MAX1501ETE -40°C to +85°C 16 Thin QFN Pin Configuration appears at end of data sheet. MAX1501 1 µF INPUT 4.5V TO 13V 2.8k Ω IN INP TEMP TMAX SETI GND GLED RLED 10 µF 4.2V 1-CELL Li+ RPULLUP VLOGIC ( ≤ 5.5V) BATT FULLI VL SELV MODE CHGEN ACOK Typical Operating Circuit Bluetooth is a trademark of Ericsson. |
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