LTC4066 LINER [Linear Technology], LTC4066 Datasheet
LTC4066
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LTC4066 Summary of contents
Page 1
... NTC thermistor input used to monitor bat- tery temperature while charging. The LTC4066/LTC4066-1 are available in a 24-pin thin profi le (0.75mm) 4mm × 4mm QFN package. The LTC4066 is also available in a 24-pin ultrathin profi le (0.55mm) 4mm × 4mm UTQFN package. ...
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... TAPE AND REEL LTC4066EUF#PBF LTC4066EUF#TRPBF LTC4066EUF-1#PBF LTC4066EUF-1#TRPBF LTC4066EPF#PBF LTC4066EPF#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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... BAT PROG (V – High to Low OUT BAT BAT (V – Low to High OUT BAT BAT V – V FLOAT RECHRG V = 4.2V (4.1V for LTC4066-1) BAT Percent of Total Charge Time Percent of Total Charge Time, V < 2.8V BAT = 100k, PROG MIN TYP MAX UNITS l 4. 0.5 1.2 ...
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... Continuous operation above the specifi ed maximum operating junction temperature may impair device reliability. Note 6: The LTC4066/LTC4066-1 are guaranteed to meet performance . specifi cations from 0°C to 70°C. Specifi cations over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... TEMPERATURE (°C) 4066 G05 Battery Regulation (Float) Voltage vs Temperature 4.220 4.200 LTC4066 4.180 4.160 4.140 4.120 LTC4066-1 4.100 4.080 1250 1500 –50 – TEMPERATURE (°C) 4066 G08 50 75 100 4066 G03 50 75 100 4066 G06 50 75 ...
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... V (mV) FWD Battery Current and Voltage vs Time (LTC4066) 600 500 400 300 200 400mAhr CELL 100 T = 25° 105k PROG 0 100 0 50 100 TIME (MINUTES) 4066 G11 ...
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... WALL Disconnect Waveforms WALL 5V/DIV V OUT 5V/DIV I WALL 0.5A/DIV I BAT 0.5A/DIV V = 3.85V 1ms/DIV BAT I = 100mA OUT R = 71.5k PROG LTC4066/LTC4066-1 I Pin Current vs Battery STAT Current (Low Currents) IDEAL DIODE CHARGING 4.2V BAT 25° –10 –8 –6 –4 – ...
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... LTC4066/LTC4066-1 TYPICAL PERFORMANCE CHARACTERISTICS WALL Connect Waveforms WALL 5V/DIV I IN 0.5A/DIV I WALL 0.5A/DIV I BAT 0.5A/DIV V = 3.85V 1ms/DIV BAT I = 100mA OUT R = 71.5k PROG PIN FUNCTIONS OUT (Pins 1, 3, 8): Voltage Output. This pin is used to provide controlled power to a USB device from either USB V ...
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... There is approximately 3°C of temperature hysteresis associated with each of the input comparators. Connect the NTC pin to ground to disable this feature. This will disable all of the LTC4066/LTC4066-1 NTC functions. V (Pin 15): Output Bias Voltage for NTC. A resistor from NTC this pin to the NTC pin will bias the NTC thermistor ...
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... LTC4066/LTC4066-1 PIN FUNCTIONS CLPROG (Pin 22): Current Limit Program and Input Cur- rent Monitor. Connecting a resistor, R programs the input to output current limit. The current limit is programmed as follows: 1000 CLPROG In USB applications the resistor less than 2.1k. The voltage on the CLPROG pin is always proportional to the current fl ...
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... I GND SHDN SUSP STAT LTC4066/LTC4066-1 2,4,5 BAT + – IDEAL 25mV DIODE CHARGER CC/CV REGULATOR BAT ENABLE – – 0.25V + 2.9V BAT UV BATTERY UVLO – 4.1V RECHARGE + (4.0V LTC4066-1) – TIMER OSCILLATOR CHRG CLK STOP COUNTER + 0.1V | EOC – POL 4066 BD 4066fc 11 ...
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... Wall adapter power can be con- nected to the output (load side) of the LTC4066/LTC4066-1 through an external device such as a power Schottky or FET, as shown in Figure 1. The LTC4066/LTC4066-1 have the unique ability to use the output, which is powered by the wall adapter path to charge the battery while providing power to the load. A wall adapter comparator on the LTC4066/LTC4066-1 can be confi ...
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... I OUT CL CHG BAT OUT CL BAT I > OUT CL BAT I < OUT CL BAT I > OUT CL BAT LTC4066/LTC4066-1 V > 100mV) CURRENT LIMIT ENABLED IN BAT CHARGER ENABLED DIODE ENABLED ...
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... LTC4066/LTC4066-1 OPERATION 14 4066fc ...
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... APPLICATIONS INFORMATION USB Current Limit and Charge Current Control The current limit and charger control circuits of the LTC4066/LTC4066-1 are designed to limit input current as well as control battery charge current as a function of I The programmed input current limit, I ⎛ ⎞ 1000 = ⎟ ⎜ ...
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... BAT and OUT pins. The I MAX I FWD 0 Figure 3. LTC4066/LTC4066-1 vs Schottky Diode Forward Voltage Drop 16 ideal diode circuit (along with the recommended 4.7μF CLPROG capacitor on the OUT pin) allows the LTC4066/LTC4066-1 to handle large transient loads and wall adapter or USB ...
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... No blocking diode or sense resistor is required when powering the IN pin. The CHRG open-drain status output provides information regarding the charging status of the LTC4066/LTC4066-1 at all times. An NTC input provides the option of charge qualifi cation using battery temperature. An internal thermal limit reduces the programmed charge current if the die temperature attempts to rise above a preset value of approximately 105° ...
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... The LTC4066/LTC4066-1 have a feature that extends charge time automatically. Charge time is extended if the charge current in constant-current mode is reduced due to load current or thermal regulation ...
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... Therefore, the termination timer will automatically slow down by a factor of fi ve until the charger reaches constant voltage mode (i.e., V 4.1V for LTC4066-1) or HPWR is returned to a logic high. The charge cycle is automatically lengthened to account for the reduced charge current. The exact time of the charge ...
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... As the temperature drops, the resistance of the NTC thermistor rises. The LTC4066/ LTC4066-1 are designed to go into hold mode when the value of the NTC thermistor increases to 2.82 times the V NTC 15 0.74 • ...
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... BAT and OUT (typically 50mΩ) allows users to connect all of their loads to the OUT pin. Such a confi guration puts the LTC4066/LTC4066 unique position whereby it can monitor all of the current that fl ows into and out of the battery. Two output pins, I enable users to monitor and integrate the battery current for a true gas gauge function ...
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... LTC4066/LTC4066-1 APPLICATIONS INFORMATION Any time a battery is connected to the BAT pin and the SHDN pin is low, the BAT pin current can be monitored with the following equation: V ISTAT = I • 1000 BAT R ISTAT where | the absolute value of the BAT pin current, BAT V is the voltage on the I ...
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... All power paths are put in a high impedance state. Suspend The LTC4066/LTC4066-1 can be put in suspend mode by forcing the SUSP pin greater than 1.2V. In suspend mode the ideal diode function from BAT to OUT is kept alive. If power is applied to the OUT pin externally (i.e., a wall adapter is present) then charging will be unaffected. Current drawn from the IN pin is reduced to 50μ ...
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... T = 105°C – (5V – 3V) • 0.8A • 37°C 105°C – 1.6W • 37°C/W = 105°C – 59°C = 46°C A The LTC4066/LTC4066-1 can be used above 46°C, but the ⎞ charge current will be reduced below 0.8A. The charge ⎟ ≈ 110 1 . ...
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... Exposed Pad on the backside of the package and the copper board will result in thermal resistances far greater than 37°C/ example, a correctly soldered LTC4066/LTC4066-1 can deliver over battery from a 5V supply at room temperature. Without a backside thermal connection, this number could drop to less than 500mA. Furthermore, Pins 6 and 7 are “ ...
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... LTC4066/LTC4066-1 PACKAGE DESCRIPTION 4.50 0.05 2.45 0.05 (4 SIDES) 3.10 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 4.00 0.10 (4 SIDES) PIN 1 TOP MARK (NOTE 6) NOTE: 1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGD-X)—TO BE APPROVED 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH ...
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... PF Package 24-Lead Plastic UTQFN (4mm × 4mm) (Reference LTC DWG # 05-08-1748 Rev Ø) 0.70 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC 0.55 0. 0.05 TYP 2.50 REF 0.125 REF 0.00 – 0.05 LTC4066/LTC4066-1 BOTTOM VIEW—EXPOSED PAD PIN 1 NOTCH R = 0.20 TYP OR 0. 0.115 CHAMFER TYP 23 24 0.40 0. 2.45 0.10 2 ...
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... FAX: (408) 434-0507 ● 4.7μF 10k 510Ω 510Ω IN OUT CHRG BAT R1 26.7k ACPR V NTC WALL NTC R2 10k LTC4066 SHUTDOWN SHDN SUSPEND USB POWER SUSP POL 500mA/100mA SELECT HPWR I STAT INPUT CURRENT CLDIS TIMER LIMIT DISABLE PROG CLPROG GND R R *SERIES 1Ω RESISTOR ONLY ...