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Part Number: MAX1780
Description: The MAX1780 Advanced Battery Pack Controller is a smart battery pack supervisor that integrates a User...
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MAX1780
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DataSheet
General Description
MAX1780 General Description
The MAX1780 Advanced Battery Pack Controller is a smart battery pack supervisor that integrates a User programmable Microcontroller Core, Coulomb- Counter-based Fuel Gauge, a multi-channel Data Acquisition Unit, a high-speed SPI Interface, and a Master/Slave SMBus Interface. The 8-bit, RISC, Microcontroller core is user programmable, and provides battery pack designers with complete flexibility in developing fuel gauging and control algorithms. The Data Acquisition Unit can measure individual cell voltages to within 50mV, total battery stack voltage (up to 20.48V), and chip internal/external temperature.
The user adjustable overcurrent comparators, along with individual cell voltage measurements, allow the MAX1780 to eliminate a separate primary pack protection IC. The MAX1780 can be directly connected to 2 to 4 series Lithium Ion cells, and supplies itself through a fully integrated 3.4V low drop out linear regulator.
MAX1780 Maximum Ratings
| PIN | MIN | MAX | UNITS |
| HV[5:0], SHDN , BATT, B1P, B2P, B3P, B4P, SCL, SDA, and DETECT to GND | -0.3 | 30 | V |
| VAA, VDD, and MCLR to GND | -0.3 | 6 | V |
| OSC1, OSC2, OCI, ODI, BTEST, BTM[2:0], EXTCLK, IO[7:0] to GND | -0.3 | VDD+0.3 | V |
| CS+, AIN, and BN to GND | -2 | 6 | V |
| CS- to GND | -1 | 1 | V |
| AGND to GND, and VAA to VDD | -0.3 | 0.3 | V |
| DIS, CHG, HV[7:6] to GND | -0.3 | BATT+0.3 | V |
| B3P, B2P, B1P to GND | -0.3 | B4P +0.3 | V |
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other condi tions beyond those indicated in the operational sections of the specifications in not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
MAX1780 Features
` User Programmable Using an External EEPROM
` Accurate Fuel Gauge Uses V-to-F Method
- < 1V Input Offset Voltage
- No External Calibration Required
` Eliminates Separate Primary Protection IC
- 50mV Accurate Individual Cell Voltage Measurements
- Built in Protection MOSFET Gate Drivers
- Over Charge & Discharge Current Protection
` Fully Integrated LDO (VIN = 4V to 28V)
` 8-bit RISC Microcontroller Core
- On-board 1.5K ROM & 0.5K Program RAM
- 144 Bytes Data Memory
- Fast Start-up 3.5MHz Instruction Oscillator
- Watch Dog Timer
` Hardware SMBus with Master Capability
` GPIO Port and High Voltage LED Drivers
` Typical Operating Currents < 200A Achievable
` Typical Shutdown Current of 1nA
` Accurate Fuel Gauge Uses V-to-F Method
- < 1V Input Offset Voltage
- No External Calibration Required
` Eliminates Separate Primary Protection IC
- 50mV Accurate Individual Cell Voltage Measurements
- Built in Protection MOSFET Gate Drivers
- Over Charge & Discharge Current Protection
` Fully Integrated LDO (VIN = 4V to 28V)
` 8-bit RISC Microcontroller Core
- On-board 1.5K ROM & 0.5K Program RAM
- 144 Bytes Data Memory
- Fast Start-up 3.5MHz Instruction Oscillator
- Watch Dog Timer
` Hardware SMBus with Master Capability
` GPIO Port and High Voltage LED Drivers
` Typical Operating Currents < 200A Achievable
` Typical Shutdown Current of 1nA
MAX1780 Typical Application
·SMBus Battery Packs
·Proprietary Battery Packs
·Data Acquisition Systems
·Remote Data Logging
·Proprietary Battery Packs
·Data Acquisition Systems
·Remote Data Logging
MAX1780 Connection Diagram
MAX1780
PDF/DataSheet Download
- Datasheet: MAX1780
- File Size: 629617 KB
- Manufacturer: Maxim
- Click here to Download
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