DS2764 High-Precision Li+ Battery Monitor th 2-Wire Interface wi www.maxim-ic.com GENERAL DESCRIPTION FEATURES The DS2764 high-precision Li+ battery monitor is a Li+ Safety Circuit data-acquisition, information-storage, and safety- Overvoltage Protection protection device tailored for cost-sensitive battery Overcurrent/Short-Circuit Protection pack applications. This low-power device integrates Undervoltage Protection precise temperature, voltage, and current 0V Battery Recovery Charge measurement, nonvolatile (NV) data storage, and Li+ Available in Two Configurations: protection into the small footprint of either a TSSOP Internal 25m Sense Resistor package or flip-chip package. The DS2764 is a key External User-Selectable Sense Resistor component in applications requiring remaining Current Measurement capacity estimation, safety monitoring, and battery- 12-Bit Bidirectional Measurement specific data storage. Internal Sense Resistor Configuration: 0.625mA LSB and 1.9A Dynamic Range PIN CONFIGURATIONS External Sense Resistor Configuration: 15.625 V LSB and 64mV Dynamic Range TOP VIEW Current Accumulation: CC 1 1 16 V IN Internal Sense Resistor: 0.25mAhr LSB PLS 2 2 15 V DD External Sense Resistor: 6.25 Vhr LSB 3 2 14 SCL DC Voltage Measurement with 4.88mV Resolution SNS 4 13 V SS Temperature Measurement Using Integrated SNS 5 12 V Sensor with 0.125C Resolution SS SNS 6 11 V 40 Bytes of Lockable EEPROM SS PS 7 10 SDA Option for Unique 64-bit ID IS2 8 9 IS1 Industry 2-Wire Interface with Programmable Slave Address TSSOP Low-Power Consumption: Active Current: 60 A typ, 90 A max 1 2 3 4 Sleep Current: 1 A typ, 2 A max A SNS APPLICATIONS B PLS DC IS2 PDAs Cell Phones/Smartphones C SNS CC PS Digital Cameras PROBE D V V SS IS1 IN PROBE ORDERING INFORMATION E PART TEMP RANGE PIN-PACKAGE V SCL SDA DD F DS2764BE+ -20C to +70C 16 TSSOP V SS FLIP CHIP +Denotes a lead(Pb)-free/RoHS-compliant package. (TOP VIEW BUMPS ON BOTTOM) Selector Guide appears at end of data sheet, for additional options. Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata. 1 of 20 011806 DS2764 High-Precision Li+ Battery Monitor with 2-Wire Interface ABSOLUTE MAXIMUM RATINGS Voltage Range on PLS and CC Pins, Relative to V -0.3V to +18V SS Voltage Range on Any Other Pin, Relative to V -0.3V to +6V SS Continuous Internal Sense Resistor Current 2.5A Pulsed Internal Sense Resistor Current 50A for <100s/s, <1000 pulses Operating Temperature Range -40C to +85C Storage Temperature Range -55C to +125C Soldering Temperature See IPC/JEDEC J-STD-020A Specification 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 conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device. RECOMMENDED DC OPERATING CONDITIONS (2.5V V 5.5V, T = -20C to +70C.) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V (Note 1) 2.5 5.5 V DD Voltage Sense Input V (Note 1) -0.3 V + 0.3 V IN DD Serial Interface Pins SCL, SDA (Note 1) -0.3 +5.5 V DC ELECTRICAL CHARACTERISTICS (2.5V V 5.5V, T = -20C to +70C.) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SCL = SDA = V , normal DD Active Current I 60 90 A ACTIVE operation SCL = SDA = 0V, no activity, PS Sleep Mode Current I 1 2 A SLEEP floating Input Logic High: SCL, SDA V (Note 1) 1.5 V IH Input Logic High: PS V (Note 1) 0.7 x V V IH DD Input Logic Low: SCL, SDA V (Note 1) 0.4 V IL Input Logic Low: PS V (Note 1) 0.3 x V V IL DD V I = -0.1mA (Note 1) V - 0.4 V Output Logic High: CC OH OH PLS Output Logic High: DC V I = -0.1mA (Note 1) V - 0.4 V OH OH DD V I = 0.1mA (Note 1) 0.4 V Output Logic Low: CC OL CC OL Output Logic Low: DC V I = 0.5A (Note 1) 0.4 V OL DC OL Output Logic Low: SDA V I = 4mA (Note 1) 0.4 V OL OL Pulldown Current: SCL, SDA I 1 A PD Input Resistance: V R 5 M IN IN Internal Current-Sense Resistor R+25C 20 25 30 m SNS Bus Low to Sleep time t 2.1 s SLEEP 2 of 20