LTC4010CFEPBF LINER [Linear Technology], LTC4010CFEPBF Datasheet
LTC4010CFEPBF
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LTC4010CFEPBF Summary of contents
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FeaTures Complete NiMH/NiCd Charger for Cells n No Microcontroller or Firmware Required n 550kHz PWM Current Source Controller n No Audible Noise with Ceramic Capacitors n Wide Input Voltage Range: 5.5V to 34V n Programmable Charge Current: ...
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LTC4010 absoluTe MaxiMuM raTings (Note 1) V (Input Supply) to GND ......................... –0.3V to 36V CC FAULT, CHRG SENSE, CELL CDIV BAT or READY to GND ..................... –0. SENSE to BAT ....................................................... ±0.3V CHEM, ...
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T SYMBOL PARAMETER PWM Current Source V BAT – SENSE Full-Scale Regulation FS Voltage (Fast Charge) V BAT – SENSE Precharge Regulation PC Voltage V BAT – SENSE Top-Off Charge TC Regulation ...
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LTC4010 elecTrical characTerisTics temperature range, otherwise specifications are at T SYMBOL PARAMETER Charger Timing ∆t Internal Time Base Error TIMER ∆t Programmable Timer Error MAX Status and Chemistry Select V Output Voltage Low (I OL LOAD I Output Leakage Current ...
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Typical perForMance characTerisTics NiMH Charge Cycle at 0.5C 1.60 4 SERIES NiMH 2100mAhr AA CELLS CHARGED AT 0.5C 1.55 SINGLE CELL VOLTAGE 1.50 1.45 BATTERY TEMPERATURE 1A 1.40 CHARGE CURRENT 1.45 0.5A TOP OFF 1. ...
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LTC4010 Typical perForMance characTerisTics Charger Efficiency 90 DCIN = 5. OUT 1.5 2 2.5 3.5 4 BATTERY VOLTAGE (V) 4010 G12 Fast Charge Current Line Regulation 3 BAT = 4.8V ...
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Typical perForMance characTerisTics Charge Enable Threshold Voltage (V – BAT) CC 600 550 500 450 400 –50 –30 – TEMPERATURE (°C) 4010 G21 INTV Voltage DD 5.5 NO LOAD 5.3 5.1 4.9 4.7 4.5 –50 –30 ...
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LTC4010 pin FuncTions GND (Pin 4): Ground. This pin provides a single-point ground for internal references and other critical analog circuits. V (Pin 5): Battery Temperature Input. An external 10k TEMP NTC thermistor may be connected between V GND to ...
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DiagraM FAULT 1 CHRG 2 4 GND CHEM 3 V TEMP 5 V CELL 6 TIMER 8 V CDIV 7 operaTion (Refer to Figure ADAPTER NO BATTERY OR V < 4.25V CC TOP-OFF CHARGE** (C/10) *t ...
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LTC4010 operaTion (Refer to Figure 1) Shutdown State The LTC4010 remains in micropower shutdown until V (Pin 15) is driven above BAT (Pin 10). In shutdown all status and PWM outputs and internally generated supply voltages are inactive. Current consumption ...
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Figure 1) Charge Termination Fast charge termination parameters are dependent upon the battery chemistry selected with the CHEM pin. Volt- age-based termination (–∆V) is always active after the initial voltage stabilization period external thermistor network ...
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LTC4010 operaTion (Refer to Figure 1) Status Outputs The LTC4010 open-drain status outputs provide valuable information about the IC’s operating state and can be used for a variety of purposes in applications. Table 1 summarizes the state of the three ...
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Figure 1) the average current through R SENSE the error amplifier is a scaled control current for the input of the PWM comparator CC. The I TH peak current threshold for CC such that the desired aver- ...
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LTC4010 applicaTions inForMaTion External DC Source The external DC power source should be connected to the charging system and the V pin through a power diode CC acting as an input rectifier. This prevents catastrophic system damage in the event ...
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Table 2. LTC4010 Charging Parameters CHEM BAT STATE PIN CHEMISTRY PC Both FC Open NiCd GND NiMH TOC GND NiMH AR Both PC: Precharge FC: Fast Charge (Initial –∆V Termination Hold Off of t TOC: Top-Off Charge (Only ...
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LTC4010 applicaTions inForMaTion formed by C1 and the parallel combination of R1 and R2 is recommended for rejecting PWM switching noise. The value of C1 should be chosen to yield a 1st order lowpass frequency of less than 500Hz. In ...
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Sample Applications Figures 6 through 8 detail sample charger applications of various complexities. Combined with the Typical Application on the first page of this data sheet, these figures demon- strate some of the proper configurations of the LTC4010. ...
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LTC4010 applicaTions inForMaTion FROM ADAPTER 12V D1 D2 FROM ADAPTER 28V PAUSE FROM MCU R1 10k 20µF 20k D3 LTC4010 V CC FAULT TGATE CHRG READY BGATE PGND TIMER 49.9k SENSE GND CHEM BAT 10k V CDIV V CELL ...
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Unlike all of the other applications discussed so far, the battery continues to power the system during charging. The MCU could be powered directly from the battery or from any type of post regulator operating from the bat- ...
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LTC4010 applicaTions inForMaTion When the precharge state timer expires, the LTC4010 begins fast charge greater than 900mV. The CELL PWM, charge timer and internal termination control are suspended if pause is asserted (V TEMP status outputs continue ...
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Input capacitors should be placed as close as possible to switching FET supply and ground connections with the shortest copper traces possible. The switching FETs must be on the same layer of copper as the input capacitors. ...
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LTC4010 package DescripTion 6.60 0.10 4.50 0.10 SEE NOTE 4 RECOMMENDED SOLDER PAD LAYOUT 4.30 – 4.50* (.169 – .177) 0.09 – 0.20 (.0035 – .0079) (.020 – .030) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. DIMENSIONS ARE IN 3. DRAWING ...
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Rev B) REV DATE DESCRIPTION B 01/10 Changes to Typical Application Updated Order Information Section Changes to Electrical Characteristics Changes to Pin Functions (V Changes to Operation Section Changes to Applications Information Changes to ...
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LTC4010 relaTeD parTs PART NUMBER DESCRIPTION LT 1510 Constant-Voltage/Constant-Current Battery Charger ® LT1511 3A Constant-Voltage/Constant-Current Battery Charger LT1513 SEPIC Constant- or Programmable-Current/Constant- Voltage Battery Charger LTC1760 Smart Battery System Manager LTC1960 Dual Battery Charger/Selector with SPI LTC4008 High Efficiency, Programmable ...