DS2770 Datasheet | Dallas Semiconducotr

FEATURES - - - Integrated charge controller supporting both rechargeable lithium and Ni MH battery technologies Available in two configurations: - Internal 25m W current-sense resistor - External user-selectable sense resistor Current measurement: - 15-bit bidirectional measurement - Internal sense resistor configuration: 62.5m A LSB and ±2A dynamic range - External sense resistor configuration: 1.56m V LSB and ±51.2m V dynamic range Current accumulation - Internal sense resistor: 0.25m Ah LSB - External sense resistor: 6.25m Vh LSB Voltage measurement with 4.88m V resolution Temperature measurement using integrated sensor with 0.125°C resolution 40 bytes of lockable EEPROM 16 bytes of general-purpose SRAM 42-day timer Dallas 1-Wireâ interface with 64-bit ID 1.8V logic levels Low power consumption: - Active current: 80m A typical - Sleep current: 0.5m A typical PIN ASSIGNMENT UV CC VCH SNS SNS SNS NC IS2 1 2 3 2 4 5 6 7 8 16 15 14 13 12 11 10 9 VDD VIN DQ VSS VSS VSS NC IS1 DS2770 16-Pin TSSOP - - - - - - - - - PIN DESCRIPTION UV CC VCH SNS IS2 IS1 VSS DQ VIN VDD NC - Battery Undervoltage Detect Output - Charge Control Output - Charge Supply Input - Sense Resistor Connection - Current-Sense Input - Current-Sense Input - Device Ground - Data Input/Output - Voltage Sense Input - Power Supply Input - No Connect ORDERING INFORMATION ORDERING NUMBER DS2770AE DS2770BE DS2770AE/T&R DS2770BE/T&R DS2770AE-025 DS2770BE-025 DS2770AE-025/T&R DS2770BE-025/T&R MARKING D2770EA D2770EB D2770EA D2770EB 2770EAR 2770EBR 2770EAR 2770EBR DESCRIPTION TSSOP, Ext. Sense Res., 4.1V Charge Voltage TSSOP, Ext. Sense Res., 4.2V Charge Voltage DS2770AE on Tape & Reel DS2770BE on Tape & Reel TSSOP, 25m W Sense Res., 4.1V Charge Voltage TSSOP, 25m W Sense Res., 4.2V Charge Voltage DS2770AE-025 on Tape & Reel DS2770BE-025 on Tape & Reel 1-Wire is a registered trademark of Dallas Semiconductor. 1 of 27 DESCRIPTION The DS2770 battery monitor and charge controller performs several...