LTC2941IDCB-1#TRPBF Linear Technology, LTC2941IDCB-1#TRPBF Datasheet
LTC2941IDCB-1#TRPBF
Specifications of LTC2941IDCB-1#TRPBF
Available stocks
Related parts for LTC2941IDCB-1#TRPBF
LTC2941IDCB-1#TRPBF Summary of contents
Page 1
... SMBus alert protocol or by setting a flag in the internal status register. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap, ThinSOT and Bat-Track are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
Page 2
... TAPE AND REEL (MINI) TAPE AND REEL LTC2941CDCB-1#TRMPBF LTC2941CDCB-1#TRPBF LTC2941IDCB-1#TRMPBF LTC2941IDCB-1#TRPBF TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on lead based finish parts. ...
Page 3
T SYMBOL PARAMETER Digital Inputs and Digital Outputs V Logic Input Threshold, AL/CC, SCL, ITH SDA V Low Level Output Voltage, AL/CC, SDA I = 3mA OL I Input Leakage, AL/CC, SCL, ...
Page 4
LTC2941-1 Typical perFormance characTerisTics Total Charge Error vs Sense Current 1.00 0.75 0.50 0.25 0 –0.25 –0.50 –0. 2.7V SENSE + V = 4.2V SENSE + –1. 100 1000 |I | (mA) SENSE 29411 G01 Supply ...
Page 5
FuncTions + SENSE (Pin 1): Positive Current Sense Input and Power Supply. Connect to the load and battery charger output. V operating range is 2.7V to 5.5V. SENSE + GND (Pin 2): Device Ground. Connect directly to the nega- ...
Page 6
LTC2941-1 block Diagram V SUPPLY R BOND + 12m SENSE SENSE BOND 50m – 12m SENSE 6 GND 2 ACCUMULATED BIDIRECTIONAL PRESCALER INTEGRATOR M REF CLK INTERNAL INTERNAL REFERENCE OSCILLATOR GENERATOR Figure 2. Block Diagram of ...
Page 7
Overview The LTC2941 battery gas gauge device designed for use with single Li-Ion cells and other battery types with terminal voltages from 2.7V to 5.5V. A precision coulomb counter integrates current through an internal sense resis- tor ...
Page 8
LTC2941-1 applicaTions inFormaTion 2 I C/SMBus Interface The LTC2941-1 communicates with a bus master using a 2 2-wire interface compatible with I C and SMBus. The 7-bit 2 hard-coded I C address of LTC2941-1 is 1100100. The LTC2941 ...
Page 9
Bit A[5] is set if the LTC2941-1’s accumulated charge over- flows or underflows the combined total in registers C and D. Note that the counting process does not roll over, but simply stops at FFFFh or 0000h until ...
Page 10
LTC2941-1 applicaTions inFormaTion The default value after power 128 = 2 = 111). The maximum battery capacity supported within the prescaler range is 5.5Ah with M = 128. See the section Extending Coulomb Counter Range if ...
Page 11
In addition to transmitters and receivers, devices can also be classified as masters or slaves when perform- ing data transfers. A master is the device which initiates a data transfer on the bus and generates the clock ...
Page 12
LTC2941-1 applicaTions inFormaTion SDA SCL ADDRESS START CONDITION Figure 5. Writing FCh to LTC2941-1 Control Register (B) Figure 6. Writing F001h to the LTC2941-1 Accumulated Charge Registers ( ADDRESS 1100100 S ...
Page 13
Internal Sense Resistor The internal sense resistor uses proprietary* tempera- ture compensation techniques to reduce the effective temperature coefficient to less than ±50ppm/K typically. The effective sense resistance as seen by the coulomb counter is factory trimmed to ...
Page 14
LTC2941-1 applicaTions inFormaTion where the factor 1.22 approximates the effect of sense resistor self-heating the maximum pad-to- PP(MAX) pad resistance at nominal temperature (27°C) and θ the thermal resistance from junction to ambient. The θ data given for ...
Page 15
... NOTE 6) 0.200 REF Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. DCB Package 6-Lead Plastic DFN (2mm × ...
Page 16
... Operation, 1.5A Max Charge Current, 180mΩ Ideal Diode with <50mΩ Option, 3.3V/25mA Always-On LDO, 4mm × 3mm DFN-14 Package www.linear.com ● LOAD 0.1µ SENSE 6 – SENSE + 1-CELL Li-Ion 2 2941 TA02 ≤ 24V, 500kHz Frequency IN LT 0710 • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2010 29411f ...