|Category||Semiconductors => Power Management => Battery Management Products => Battery Charger IC|
|Part family||BQ2054 Switch-mode Li-Ion Battery Charger in PDIP or SOIC Package|
|Description||Switch-mode Li-Ion Battery Charger in PDIP or SOIC Package 16-PDIP -20 to 70|
|Company||Texas Instruments, Inc.|
|Datasheet||Download BQ2054 datasheet
|Cross ref.||Similar parts: MAX1259CPE+, MAX1259EPE+, MAX1259MJE+, LTC1558CS-5, LTC1559CS-5, AIC1781ACNTB, MAX2003ACPE, MAX2003ACSE, MAX2003CPE, MAX2003CSE|
|Absolute Vin (safety rating)(Max)((V))||7|
|Approx. Price (US$)||3.05 | 1ku|
|Battery Charge Voltage(Min)(V)||0|
|Control Interface||Standalone (RC-Settable)|
|Features||Temp Monitoring (Thermistor Pin)|
|Battery Charge Voltage(Max)(V)||20|
|Control Topology||Switch-Mode Buck|
|Number of Series Cells||2,3,4|
|Pin nb||Package type||Ind std||JEDEC code||Package qty||Carrier||Device mark||Width (mm)||Length (mm)||Thick (mm)||Pitch (mm)|
Safe charge of Lithium Ion battery packs Voltage-regulated currentlimited charging Fast charge terminated by selectable minimum current; safety backup termination on maximum time Charging continuously qualified by temperature and voltage limits Pulse-width modulation control ideal for high-efficiency switchmode power conversion Direct LED control outputs display charge status and fault conditions
The bq2054 Lithium Ion FastCharge IC is designed to optimize charging of lithium ion (Li-Ion) chemistry batteries. A flexible pulse-width modulation regulator allows the bq2054 to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum. The bq2054 measures battery temperature using an external thermistor for charge qualification. Charging begins when power is applied or on battery insertion. For safety, the bq2054 inhibits charging until the battery voltage and temperature are within con-
figured limits. If the battery voltage is less than the low-voltage threshold, the bq2054 provides low-current conditioning of the battery. A constant current-charging phase replenishes 70% of the charge capacity, and a voltage-regulated phase returns the battery to full. The charge cycle terminates when the charging current falls below a user-selectable current limit. For safety, charging terminates after maximum time and is suspended if the temperature is outside the preconfigured limits. The bq2054 provides status indications of all charger states and faults for accurate determination of the battery and charge system conditions.
TM ICTL Time-out programming input Inrush current control output Battery voltage input Voltage loop comp input Current loop comp input Minimum current termination select input Sense resistor input Temperature sense input TPWM LED3 Regulator timebase input Charge status output 3 Common LED output System ground 5.0V± 10% power Modulation control output Charge status output 1 Charge status output 2/ Display select input
TM Time-out programming input This input sets the maximum charge time. The resistor and capacitor values are determined using Equation 5. Figure 7 shows the resistor/capacitor connection. ICTL Inrush current control output ICTL is driven low during the fault or charge-complete states of the chip. It is used to disconnect the capacitor across the battery pack terminals, preventing inrush currents from tripping overcurrent protection features in the pack when a new battery is inserted. BAT Battery voltage input BAT is the battery voltage sense input. This potential is generally developed using a high-impedance resistor divider network connected between the positive and the negative terminals of the battery. See Figure 4 and Equation 1. VCOMP Voltage loop compensation input This input uses an external R-C network for voltage loop stability. ITERM Minimum current termination select This three-state input is used to set IMIN for fast charge termination. See Table 2. ICOMP Current loop compensation input This input uses an external R-C network for current loop stability. SNS Charging current sense input Battery current is sensed via the voltage developed on this pin by an external sense resistor, RSNS, connected in series with the negative terminal of the battery pack. See Equation 6. VSS VCC DSEL LED3 TS Temperature sense input This input is used to monitor battery temperature. An external resistor divider network sets the lower and upper temperature thresholds. See Figure 6 and Equations 3 and 4. TPWM Regulation timebase input This input uses an external timing capacitor to ground to set the pulse-width modulation (PWM) frequency. See Equation 7. LCOM Common LED output Common output for LED13. This output in a high-impedance state during initializ programming input on DSEL. MOD Current-switching control output MOD is a pulse-width modulated push/pull output that is used to control the charging current to the battery. MOD switches high to enable current flow and low to inhibit current flow. Charger display status 13 outputs These charger status output drivers are for the direct drive of the LED display. Display modes are shown in Table 1. These outputs are tri-stated during initialization so that DSEL can be read. Display select input This three-level input controls the LED13 charge display modes. See Table 1. VCC supply ± 10% power Ground
The bq2054 uses a two-phase fast charge algorithm. In phase 1, the bq2054 regulates constant current (ISNS = IMAX) until VCELL VBAT - VSNS) rises to VREG. The bq2054 then transitions to phase 2 and regulates constant voltage (VCELL = VREG) until the charging current falls below the programmed IMIN threshold. The charging current must remain below IMIN for ± 40ms before a valid fast charge termination is detected. Fast charge then terminates, and the bq2054 enters the Charge Complete state. See Figures 1 and 2. Thermal monitoring continues throughout the charge cycle, and the bq2054 enters the Charge Pending state when the temperature out of range. (There is one exception; if the is in the Fault state--see below--the out-of-range temperature is not recognized until the bq2054 leaves the Fault state.) All timers are suspended (but not reset) while the is in Charge Pending. When the temperature comes back into range, the bq2054 returns to the point in the charge cycle where the out-of-range temperature was detected. When the temperature is valid, the bq2054 then regulates current to ICOND (=IMAX/5). After an initial holdoff period tHO (which prevents the chip from reacting to transient voltage spikes that may occur when charge current is first applied), the chip begins monitoring VCELL. If VCELL does not rise to at least VMIN before the expiration of time-out limit tMTO (e.g. the cell has failed short), the bq2054 enters the Fault state. If VMIN is achieved before expiration of the time limit, the chip begins fast charging. Once in the Fault state, the bq2054 waits until VCC is cycled or a new battery insertion is detected. It then starts a new charge cycle and begins the qualification process again.
The bq2054 starts a charge cycle when power is applied while a battery is present or when a battery is inserted. Figure 2 shows the state diagram for pre-charge qualification and temperature monitoring. The bq2054 first checks that the battery temperature is within the allowed, user-configurable range. If the temperature is out of range, the bq2054 enters the Charge Pending state and waits until the battery temperature is within the allowed range. Charge Pending is enunciated by LED3 flashing.
|Some Part number from the same manufacture Texas Instruments, Inc.|
|BQ2054PN ti BQ2054, Li-ion Switchmode Charge Management ic|
|BQ2056 Low-dropout Li-ion Charge-control Ics With Autocomp(tm) Charge-rate Compensation|
|BQ2056CSN Advanced Li-ion Linear Charge Management ic|
|BQ2056PN ti BQ2056, Li-ion Low-dropout Linear Charge Management ic With Autocomptm|
|BQ2056T Low-dropout Li-ion Charge-control Ics With Autocomp(tm) Charge-rate Compensation|
|BQ2056TPN ti BQ2056T, Li-ion Low-dropout Linear Charge Management ic With Autocomptm|
|BQ2056TS Advanced Li-ion Linear Charge Management ic|
|BQ2056TSN ti BQ2056T, Li-ion Low-dropout Linear Charge Management ic With Autocomptm|
|BQ2056TTS Advanced Li-ion Linear Charge Management ic|
|BQ2056V Low-dropout Li-ion Charge-control Ics With Autocomp(tm) Charge-rate Compensation|
|BQ2056VPN ti BQ2056V, Li-ion Low-dropout Linear Charge Management ic With Autocomptm|
|BQ2056WSN Advanced Li-ion Linear Charge Management ic|
|BQ2057CDGK ti BQ2057C, Li-ion Low-dropout Linear (4.2V) Charge Management ic For One-cell Applications With Autocomptm|
|BQ2057CSN ti BQ2057C, Li-ion Low-dropout Linear (4.2V) Charge Management ic For One-cell Applications With Autocomptm|
|BQ2057DGK ti BQ2057, Li-ion Low-dropout Linear (4.1V) Charge Management ic For One-cell Applications With Autocomptm|
|BQ2057PN-C1 Advanced Li-ion Linear Charge Management ic|
|BQ2057SN ti BQ2057, Li-ion Low-dropout Linear (4.1V) Charge Management ic For One-cell Applications With Autocomptm|
LP311PWLE : ti LP311, Single, Low-Power, Strobed Differential Comparator With Open Collector And Emitter Outputs
SN74LVC245PWLE : Standard Transceivers ti SN74LVC245, Octal Bus Transceiver With 3-State Outputs
UC3625N : Motion/Motor Control ti UC3625, Brushless DC Motor Controller
TPS728185315DRVRG4 : Dual Switchable Voltage Level LDO with VSET Pin The TPS728xx series of low-dropout linear regulators (LDOs), with a selectable dual-voltage level output, is designed specially for applications that require two levels of output voltage regulation. Programming fuses and memory cards, reducing leakage
TPS54073PWP : 2.2 ? 4 -V, 14-A Synchronous BUCK Converter WITH Disabled Sinking During Start-up
TPS75215-Q1 : Reset Output, Tps754xxq with Power Good Output Fast-transient-response 2-A Low-dropout Voltage Regulators
TLV1117-25 : Adjustable AND Fixed Low-dropout Voltage Regulator
OPA454AIDDAG4 : High Voltage (100V), High-Current (50mA) OPERATIONAL AMPLIFIERS, G=1 Stable The OPA454 is a low-cost operational amplifier with high voltage (100V) and relatively high current drive (25mA). It is unity-gain stable and has a gain-bandwidth product of 2.5MHz. The OPA454 is internally protected aga
TS321QDBVRQ1 : Linear - Amplifier - Instrumentation, Op Amps, Buffer Amp Integrated Circuit (ics) General Purpose Tape & Reel (TR) 600µA 3 V ~ 30 V, ±1.5 V ~ 15 V; IC OPAMP GP 800KHZ SGL SOT23-5 Specifications: Packaging: Tape & Reel (TR) ; Amplifier Type: General Purpose ; Number of Circuits: 1 ; Package / Case: SC-74A, SOT-753 ; Slew Rate: 0.4 V/µs ; Gain Bandwidth Product: 800kHz ; Current - Supply: 600µA ; Current - Output / Channel: 40mA ; Voltage - Supply, Single/Dual (±): 3 V ~ 3
TL852CNE4 : Rf Misc Ic And Module Rf/if And Rfid; IC SONAR RANGING RECEIVER 16-DIP Specifications: Function: Sonar Ranging Receiver ; Secondary Attributes: - ; Frequency: 20kHz ~ 90kHz ; RF Type: Sonar Control ; Package / Case: 16-DIP (0.300", 7.62mm) ; Packaging: Tube ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant
54AC520D : 8-bit Identity Comparator. The 'AC/'ACT520 are expandable 8-bit comparators. They compare two words up to eight bits each and provide a LOW output when the two words match bit for bit. The expansion input = B also serves as an active LOW enable input. Expandable to any word length 20-pin package Outputs source/sink mA 'ACT520 has TTL-compatible inputs Standard Microcircuit Drawing.
5962-9089503M2A : ti TLC2652A, Advanced LinCMOS(TM) Precision Chopper-stabilized Operational Amplifier.
5962-9470801MPA : CLC428 - Dual Wideband, Low Noise, Voltage Feedback op Amp, Package: Cerdip, Pin Nb=8.
AD8061-EB : Low-cost, 300 MHZ Rail-to-rail Amplifiers. Low Cost Single (AD8061), Dual (AD8062) Single with Disable (AD8063) Rail-to-Rail Output Swing V OS High Speed 300 MHz, 3 dB Bandwidth V/ s Slew Rate 8.5 nV/ 35 ns Settling Time to 0.1% with 1 V Step Operates 8 V Supplies Input Voltage Range +3.2 V with = 5 Excellent Video Specs (RL = 2) Gain Flatness to 30 MHz 0.01% Differential Gain Error 0.04 Differential.
DBL339 : Quad Voltage Comparator.
INA2331AIPWR : ti INA2331, Low-Power, Single Supply, CMOS, Instumentation Amplifier. DESIGNED FOR LOW COST HIGH GAIN ACCURACY: 0.02%, 2ppm/°C GAIN SET WITH EXT. RESISTORS FOR > 5V/V LOW OFFSET VOLTAGE: ±250µV HIGH CMRR: 94dB DC, at 45kHz LOW BIAS CURRENT: 0.5pA BANDWIDTH, SLEW RATE: 2.0MHz, 5V/µs RAIL-TO-RAIL OUTPUT SWING: (V+) 0.02V WIDE TEMPERATURE RANGE: to +125°C LOW QUIESCENT CURRENT: 490µA max/chan SHUT DOWN: 0.01µA MSOP-8.
LB1710 : Low-active, 7-unit, Darlington Transistor Array. Applications Relay drivers, printer drivers, lamp drivers. Input : Low-active type, Output : Sink type High breakdown voltage VCEO=50V. High-current drive IC max=400mA. On-chip input diodes. s Parameter Maximum supply voltage Collector-to-emitter voltage Collector current Input voltage Allowable power dissipation Operating temperature Storage temperature.
LM211 : Highly Flexible Voltage Comparator. The ability to operate from a single power supply $15 V split supplies, as commonly used with operational amplifiers, makes the LM211/LM311 a truly versatile comparator. Moreover, the inputs of the device can be isolated from system ground while the output can drive loads referenced either to ground, the VCC or the VEE supply. This flexibility makes.
LM224ADB : Quadruple Operational Amplifiers. Wide Range of Supply Voltages: Single Supply. V (LM2902 and to 26 V), or Dual Supplies Low Supply Current Drain Independent of Supply Voltage. 0.8 mA Typ Common-Mode Input Voltage Range Includes Ground Allowing Direct Sensing Near Ground Low Input Bias and Offset Parameters: Input Offset Voltage. 3 mV Typ A Versions. 2 mV Typ Input Offset Current. 2 nA Typ Input.
LT6552 : 3.3V Single Supply Video Difference Amplifierthe LT 6552 is a Video Difference Amplifier Optimized For Low Voltage Single Supply Operation. This Versatile Amplifier Uncommitted High Input Impedance (+) And ( ) Inputs And CAN be Used in Differential or Single-ended Configurations..
MPC100 : . q BANDWIDTH: (1.4Vp-p) q LOW INTERCHANNEL CROSSTALK: 60dB (30MHz, DIP); 70dB (30MHz, SO) q LOW SWITCHING TRANSIENTS: +2.5/1.2mV q LOW DIFFERENTIAL GAIN/PHASE ERRORS: 0.01° q LOW QUIESCENT CURRENT: One Channel Selected: ±4.6mA No Channel Selected: ±230µA The MPC100 consists of four identical monolithic integrated open-loop buffer amplifiers, which are connected.
NJM4559V : Dual Operational Amplifier.
OPA2658E/250 : ti OPA2658, Dual Wideband, Low Power, Current Feedback Operational Amplifier.
SG2544 : Power. Low-voltage Supervisory Circuit. This device was designed to provide all the operational of the SG1543/ 2543/3543 devices but with the added advantage of uncommitted inputs to the voltage sensing comparators. This allows monitoring of voltage levels less than 2.5 volts by dividing down the internal reference supply. In all other respects, the SG1544 series is identical to the SG1543.
SL1914A : = Satellite Tuner Front End Lna With Agc ;; Package Type = Sop / Soic ;; No. Of Pins = 8.
TLV2304ID : ti TLV2304, op Amp (2) + Open Collector Comparator (2) Combo ic. TLV2302, TLV2304 FAMILY OF NANOPOWER OPERATIONAL AMPLIFIERS AND OPEN DRAIN COMPARATORS Micro-Power Operation. 1.4 µA Input Common-Mode Range Exceeds the Rails. V to VCC 5 V Supply Voltage Range. 16 V Rail-to-Rail Input/Output (Amplifier) Reverse Battery Protection 18 V Gain Bandwidth Product. 5.5 kHz (Amplifier) Open-Drain CMOS Output Stage (Comparator).
TLV2780CDBV : Family of 1.8 V High-speed Rail-to-rail Input/output Operational Amplifiers With Shutdown.
TPA0222 : Stereo 2-w Audio Power Amplifier With Four Selectable Gain Settings And Mux Control.
AD5273 : 64-Position OTP Digital Potentiometer The AD5273 is a 64-position, one-time programmable (OTP) digital potentiometer that employs fuse link technology to achieve permanent program setting. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. It allows unlimited adjustments before permanently.