Details, datasheet, quote on part number: BQ2092SN-A309
CategoryPower Management => Battery Management => Gas Gauges
TitleGas Gauges
Descriptionti BQ2092, Multi-chemistry SBS 0.95 Compliant Gas Gauge With 4 Led Drivers
CompanyTexas Instruments, Inc.
DatasheetDownload BQ2092SN-A309 datasheet
Find where to buy


Features, Applications

Provides accurate measurement of available charge in NiCd, NiMH, and Li-Ion rechargeable batteries Supports SBData charge control commands for Li-Ion, NiMH, and NiCd chemistries Designed for battery pack integration

The bq2092 Gas Gauge IC With SMBus-Like Interface is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The bq2092 directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries. The bq2092 uses the SMBus protocol that supports many of the Smart Battery Data (SBData) commands. The bq2092 also supports SBData charge control. Battery state-ofcharge, capacity remaining, remaining time and chemistry are available over the serial link. Battery-charge state can be directly indicated using a four-segment LED display to graphically depict battery full-toempty in 25% increments.

The bq2092 estimates battery selfdischarge based on an internal timer and temperature sensor and user-programmable rate information stored in external EEPROM. The bq2092 also automatically recalibrates or "learns" battery capacity in the full course of a discharge cycle from full to empty. The bq2092 may operate directly from three nickel chemistry cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC for other battery cell configurations. An external EEPROM is used to program initial values into the bq2092 and is necessary for proper operation.

120µA typical operating current Small size enables implementations in as little as 3 square inch of PCB 4 Two-wire SMBus-like interface Measurements compensated for current and temperature Programmable self-discharge and charge compensation 16-pin narrow SOIC

VCC 3.0­5.5V Serial memory clock Serial memory data LED segment 1 LED segment 2 LED segment 3 LED segment 4 System ground VOUT EEPROM supply output REF SR DISP SB SCD SCC Sense resistor input Display control input Battery sense input Serial communication data input/output Serial communication clock Voltage reference output

VCC SCL Supply voltage input Serial memory clock This output is used to clock the data transfer between the bq2092 and the external nonvolatile configuration memory. SDA Serial memory data and address This bi-directional pin is used to transfer address and data to and from the bq2092 and the external configuration memory. SEG1­ SEG4 LED display segment outputs Each output may activate an external LED to sink the current sourced from VCC. VSS SR Ground Sense resistor input The voltage drop (VSR) across pins SR and VSS is monitored and integrated over time to interpret charge and discharge activity. The SR input is connected to the sense resistor and the negative terminal of the battery. VSR < VSS indicates discharge, and VSR > VSS indicates charge. The effective voltage drop, VSRO, as seen by the bq2092 is VSR + VOS (see Table 3). DISP Display control input DISP high disables the LED display. DISP floating allows the LED display to be active during charge if the rate is greater than 100mA. DISP low activates the display for 4 seconds. REF NC SCD SB Secondary battery input This input monitors the cell pack voltage as a single-cell potential through a highimpedance resistor divider network. The cell pack voltage is reported in the SBD register function Voltage (0x09) and is compared to end-of-discharge voltage and charging voltage parameters. No connect Serial communication data This open-drain bidirectional pin is used to transfer address and data to and from the bq2092. SCC Serial communication clock This open-drain bidirectional pin is used to clock the data transfer to and from the bq2092. Reference output for regulator REF provides a reference output for an optional micro-regulator. VOUT Supply output This output supplies power to the external EEPROM configuration memory.

The bq2092 determines battery capacity by monitoring the amount of charge input to or removed from a rechargeable battery. The bq2092 measures discharge and charge currents, estimates self-discharge, and monitors the battery for low-battery voltage thresholds. The charge measurement is made by monitoring the voltage across a small-value series sense resistor between the battery's negative terminal and ground. The available battery charge is determined by monitoring this voltage over time and correcting the measurement for the environmental and operating conditions. Figure 1 shows a typical battery pack application of the bq2092 using the LED capacity display, the serial port, and an external EEPROM for battery pack programming information. The bq2092 must be configured and calibrated for the battery-specific information to ensure proper operation. Table 1 outlines the externally programmable functions available in the bq2092. Refer to the Programming the bq2092 section for further details. An internal temperature sensor eliminates the need for an external thermistor--reducing cost and components. An internal, temperature-compensated timebase eliminates the need for an external resonator, further reducing cost and components. The entire circuit in Figure 1 can occupy less than 3 4 square inch of board space.

Figure 1. Battery Pack Application Diagram--LED Display


Related products with the same datasheet
Some Part number from the same manufacture Texas Instruments, Inc.
BQ2092SN-A309TR ti BQ2092, Multi-chemistry SBS 0.95 Compliant Gas Gauge With 4 Led Drivers
bq20z80 SBS 1.1-COMPLIANT Gas Gauge Enabled With Impedancetrack Technology<<<>>>for Use With The Bq29312<<<>>><<<>>><<<>>>The Bq20z80 Sbs-compliant Gas Gauge ic Incorporand<<<>>>ating Impedancetrack Technology
BQ2110B-009 Gas Gauge Module With Leds And Switch (L-VERSION) BQ2010 Based
BQ2110LB Nicd or Nimh Gas Gauge Module
BQ2110LB-001 Gas Gauge Module With Leds And Switch (L-VERSION) BQ2010 Based
BQ2110LBKT Nicd or Nimh Gas Gauge Module
BQ2110LMODULE ti BQ2110, Gas Gauge Module With Leds And Switch (L-version) BQ2010 Based
BQ2110MODULE Gas Gauge Module With Leds And Switch (L-VERSION) BQ2010 Based
BQ2111L Nicd Gas Gauge Module With Leds For High Discharge Rates
BQ2111LB-KT Gas Gauge Module With Leds And Switch, BQ2011 Based
BQ2111LMODULE ti BQ2111L, Gas Gauge Module With Leds And Switch, BQ2011 Based

PT4582N : Plug-in Power Solutions->Isolated->Single Output ti PT4582, 5Vout 30W 18V to 60V Input ISOlated DC-DC Converter

SE370C758AFZT : TMS370 8-bit ti SE370C758A, 8-Bit Microcontroller

SN75LP196PWR : ti SN75LP196, Low-power Multiple RS-232 Drivers And Receivers

TMS320C30-33 : TMS320 Family Digital Signal Processor

TPS40222DRPTG4 : 1.6A, 1.25-MHz Buck Converter in a 3 mm SON Package The TPS40222 is a fixed-frequency, current-mode, non-synchronous buck converter optimized for applications powered by a 5-V distributed source. With internally determined operating frequency, soft-start time, and control loop compensation, the TP

MAX232EINSR : DUAL Rs-232 Driver/receiver WITH Iec61000-4-2 Protection

74LVCZ16245ADGGRE4 : 16-bit BUS Transceiver WITH 3-state Outputs

CAHCT126QPWRG4Q1 : Logic - Buffers, Drivers, Receivers, Transceiver Integrated Circuit (ics) Buffer/Line Driver, Non-Inverting Tape & Reel (TR) 8mA, 8mA 4.5 V ~ 5.5 V; IC BUS BUFF/DVR QD N-INV 14TSSOP Specifications: Logic Type: Buffer/Line Driver, Non-Inverting ; Package / Case: 14-TSSOP (0.173", 4.40mm Width) ; Packaging: Tape & Reel (TR) ; Mounting Type: Surface Mount ; Number of Bits per Element: 1 ; Number of Elements: 4 ; Operating Temperature: -40°C ~ 125°C ; Voltage - Supply: 4.5 V ~

TLV2731CDBVTG4 : ti TLV2731, Single LinCMOS(TM) Rail-to-rail Low-power Operational Amplifier

TPS650250QRHBRQ1 : Pmic - Battery Management Integrated Circuit (ics) Tape & Reel (TR) 2.5 V ~ 6 V; IC PWR MGMT LI-ION SYSTEMS 32QFN Specifications: Battery Chemistry: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol) ; Function: Power Management ; Package / Case: 32-VFQFN Exposed Pad ; Packaging: Tape & Reel (TR) ; Operating Temperature: -40°C ~ 125°C ; Voltage - Supply: 2.5 V ~ 6 V ; Lead Free Status: Lead Free ; RoHS Status:

CD74HCT14M : HCT SERIES, 9-BIT ENCODER, PDSO16 Specifications: Number of Bits: 9 ; Supply Voltage: 5V ; Package Type: TSSOP, PLASTIC, TSSOP-16 ; Logic Family: CMOS ; Number of Pins: 16 ; Propagation Delay: 53 ns ; Operating Temperature: -55 to 125 C (-67 to 257 F)

UCC24630EVM-636 : Power Management IC Development Tools UC24630 65W AC/DC Adapter Texas Instruments UCC24630 Synchronous Rectifier Controller is a high-performance controller and driver for N-channel MOSFET power devices used for secondary-side synchronous rectification (SR). The combination of a controller and MOSFET emulates a near-ideal diode rectifier. This solution direct

Same catergory

78SR112 : Non-Isolated DC-DC Converters. Very Small Footprint High Efficiency > 85% Self-Contained Inductor Internal Short-Circuit Protection Over-Temperature Protection Wide Input Range The is a series of wide input voltage, 3-terminal Integrated Switching Regulators (ISRs). These ISRs have a maximum output current of 1.5A and an output voltage that is laser trimmed to a variety of industry.

GS09AC-FRC : Openframe Power Supply->Modules. Open Frame Power Supply For Set Top Box.

MAX705 : General Purpose. Low-Cost, P Supervisory Circuits. The MAX705-MAX708/MAX813L microprocessor (µP) supervisory circuits reduce the complexity and number of components required to monitor power-supply and battery functions in µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX705/MAX706/MAX813L provide four functions:.

MC33566D2T-001 : 400mA, 3.3V Output, Low Dropout Regulator With External P-FET, Package: D2PAK, Pins=5.

MODELPCWDT : Watchdog. PC Watchdog Timer Card PC Watchdog Timer Card. B&B Electronics' PC Watchdog Timer Card, Model PCWDT, is a hardware device designed to overcome the dangers or annoyances associated with a PC "locking up." The PCWDT is periodically reset by your software or an external hardware trigger. If the watchdog doesn't receive the reset trigger within a software selectable timeout period, the PCWDT will "push".

PD01 : High Current Pulse Driver. WIDE SUPPLY TO 100A PULSE SOURCE THERMAL SHUTDOWN SOA SENTRYTM APPLICATIONS The is a precision pulse current source which can sink currents to 100 amps and work off supply voltages to 200V. The output current can be controlled by an analog input voltage or analog input and gate signal combination. By gating the analog input voltage it is possible to simultaneously.

S-8241 : Lithium-Ion Rechargeable Battery Protection. Function = For 1-cell ;; Overcharge Detection Voltage (Accuracy) = 3.9-4.4 V (±25 MV) ;; Overdischarge Detection Voltage (Accuracy) = 2.0-3.0 V (±80 MV) ;; Overcurrent Detection Voltage 1 (Accuracy) = 0.05-0.3 V (±20 MV) ;; Overcharge Detection Delay Time = 1.0s, 0.125s ;; Package (Power Dissipation).

SLA3002M : Multi-Output Regulator. 3-Output Type Regulator. 3 regulator ICs combined in 1 package Insulated single inline package Can be used with dropper type and switching type 3 independent circuits for input and output respectively. Internal dissipation can be reduced since different input voltages can be applied. Dropper type regulator IC is low-dropout voltage type with input/output voltage difference.

TC05B : Low Power, Bandgap Voltage References. s Temperature Coefficient. 50ppm/°C Wide Operating Current Range to 20mA Dynamic Impedance. 1 Output Tolerance. Typ. 2% Output Voltage Option 2.5V TO-92 Plastic Package 8-Pin Plastic Narrow Body SOIC Package The TC04 (1.25V output) and TC05 (2.5V output) bipolar, two-terminal, bandgap voltage references offer precision performance without premium price.

UC3906DW : ti UC3906, Lead-acid Linear Charge Management ic. Optimum Control for Maximum Battery Capacity and Life Internal State Logic Provides Three Charge States Precision Reference Tracks Battery Requirements Over Temperature Controls Both Voltage and Current at Charger Output System Interface Functions Typical Standby Supply Current of only 1.6mA The UC2906 series of battery charger controllers contains.

UCC384-ADJ : Low Dropout 0.5a Negative Linear Regulator. Regulation 0.2 V Dropout 0.5 A Wide Input Voltage Range ­15 V Low Quiescent Current Irrespective of Load Simple Logic Shutdown Interfacing ­12 V, and Adjustable Output 2.5% Duty Cycle Short Circuit Protection The UCC384-x family of negative linear-series pass regulators is tailored for low-dropout applications where low-quiescent power is important.

VGO55 : Single Phase Rectifier Bridge. VKF 55 Symbol IdAV x IdAVM x IFRMS, ITRMS IFSM, ITSM Test Conditions = 85°C, module per leg TVJ 0 V TVJ = TVJM V I2t TVJ 0 V TVJ = TVJM 0 V (di/dt)cr ms (50 Hz), sine ms (60 Hz), sine ms (50 Hz), sine ms (60 Hz), sine ms (50 Hz), sine ms (60 Hz), sine ms (50 Hz), sine ms (60 Hz), sine VKO 55 Maximum Ratings A2s A/ms V/ms V~ Nm g Package with.

AAT3153 : The AAT3153 is a low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications. The AAT3153 is capable of driving six LED channels from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel.

TPS40192 : TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors,.

LTC3406A : 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT The LTC®3406A is a high effi ciency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20μA, dropping to ≤1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3406A ideally suited for single.

SC623A : LED Light Management Unit with I2C Interface The SC623A is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLife™ technology. Performance is optimized for use in single-cell Li-ion battery applications..

QUS40-096 : Quarter-Brick Converter Enables Cost And Space Savings In Intermediate Bus Architecture Applications Murata Power Solutions has introduced a new isolated DC/DC Converter that provides a cost and space saving solution for Intermediate Bus Architecture applications in computer and telecommunications equipment. The QUS40-096 has an unregulated output,.

LTC3606B : 800mA Synchronous Step-Down DC/DC With Average Input Current Limit The LTC3606B is an 800mA monolithic synchronous buck regulator using a constant frequency current mode architecture. The input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications. 100% duty cycle capability provides low dropout operation, extending.

MAX8903B : 2A, 1-Cell Li+ DC-DC Charger For USB And Adapter Power The MAX8903B is integrated 1-cell Li+ chargers and Smart Power Selector™ with dual (AC adapter and USB) power inputs. The switch mode charger uses a high switching frequency to eliminate heat and allow tiny external components. It can operate with either separate inputs for USB and AC adapter power,.

HT7L2102 : Anti-EMI, High Efficiency Dimmable LED Lighting Driver With Green Mode And Integrated Protections The HT7L2102 is an advanced, highly integrated LED Lighting driver using an AC-DC isolation topology. The device provides many protection functions and uses ultra low power circuit design, and is optimized to restrict EMI. By integrating a Non-Audible Noise.

0-C     D-L     M-R     S-Z