LTC2942IDCB-1#PBF Linear Technology, LTC2942IDCB-1#PBF Datasheet
LTC2942IDCB-1#PBF
Specifications of LTC2942IDCB-1#PBF
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LTC2942IDCB-1#PBF Summary of contents
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... The LTC2942 requires only a single low value sense resis- tor to set the measured current range. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency ∆Σ, ThinSOT and Bat-Track are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
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... TAPE AND REEL LTC2942CDCB#TRMPBF LTC2942CDCB#TRPBF LTC2942IDCB#TRMPBF LTC2942IDCB#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. For more information on lead free part marking, go to: ...
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T SYMBOL PARAMETER q Charge LSB (Note 4) LSB TCE Total Charge Error (Note 5) Voltage Measurement ADC Resolution (No Missing Codes) V Full-Scale Voltage FS ∆V Quantization Step of 14-Bit LSB ...
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LTC2942 elecTrical characTerisTics temperature range, otherwise specifications are at T SYMBOL PARAMETER t Data Hold Time Output HD,DATO t Data Output Fall Time OF Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the ...
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Typical perFormance characTerisTics Total Charge Error vs Differential Sense Voltage –1 – 2.7V SENSE + V = 4.2V SENSE + –3 0 (mV) SENSE 2942 G01 Supply Current vs Supply Voltage ...
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LTC2942 pin FuncTions + SENSE (Pin 1): Positive Current Sense Input and Power Supply. Connect to the load/charger side of the sense resistor. V operating range is 2.7V to 5.5V. SENSE + GND (Pin 2): Device Ground. Connect directly to ...
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Overview The LTC2942 is a battery gas gauge device designed for use with single Li-Ion cells and other battery types with a terminal voltage at 2.7V to 5.5V. It measures battery charge and discharge, battery voltage and chip temperature. ...
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LTC2942 operaTion Power-Up Sequence + When SENSE rises above a threshold of approximately 2.5V, the LTC2942 generates an internal power-on reset (POR) signal and sets all registers to their default state. In the default state, the coulomb counter is active ...
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Status Register (A) The status of the charge, voltage and temperature alerts is reported in the status register shown in Table 2. Table 2. Status Register A (Read only) BIT NAME OPERATION A[7] Chip Identification 0: LTC2942 1: ...
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LTC2942 applicaTions inFormaTion Alert/Charge Complete Configuration B[2:1] The AL/CC pin is a dual function pin configured by the control register. By setting bits B[2:1] to [10] (default) the AL/CC pin is configured as an alert pin following the SMBus protocol. ...
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Choosing Coulomb Counter Prescaler M B[5:3] If the battery capacity ( very small compared to BAT the maximum current ( MAX BAT the prescaler value M should be changed from its default value (128). ...
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LTC2942 applicaTions inFormaTion Accumulated Charge Register (C, D) The coulomb counter of the LTC2942 integrates current through the sense resistor. The result of this charge inte- gration is stored in the 16-bit accumulated charge register (registers C, D). As the ...
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The LTC2942 always acts as a slave. Figure 3 shows an overview of the data transmission for 2 fast and standard mode on the I C bus. START and STOP Conditions When the ...
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LTC2942 applicaTions inFormaTion Read Protocol The master begins a read operation with a START condition followed by the seven bit slave address 1100100 and the R/W bit set to zero, as shown in Figure 6. The LTC2942 acknowledges and then ...
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The master initiates the ARA procedure with a START con- dition and the special 7-bit ARA bus address (0001100) followed by the read bit ( the LTC2942 is asserting the AL/CC pin in alert mode, ...
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LTC2942 package DescripTion 1.65 0.05 3.55 0.05 (2 SIDES) 2.15 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 BAR TOP MARK (SEE NOTE 6) 0.200 REF DCB Package 6-Lead Plastic DFN (2mm × 3mm) (Reference LTC DWG # ...
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... Revised Exposed Pad description in the Pin Configuration and Pin Functions sections. 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. ...
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... 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 R SENSE 100m 6 – SENSE + 1-CELL Li-Ion 2 2942 TA02 ≤ 24V, 500kHz Frequency IN LT 0810 REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2010 2942fa ...