ltc4069edc-4.4 Linear Technology Corporation, ltc4069edc-4.4 Datasheet
ltc4069edc-4.4
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ltc4069edc-4.4 Summary of contents
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... U APPLICATIO S ■ Wireless PDAs ■ Cellular Phones ■ Portable Electronics , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6522118, 6700364. U TYPICAL APPLICATIO Standalone Li-Ion Battery Charger ...
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... U PACKAGE/ORDER I FOR ATIO + 0.3V CC ORDER PART NUMBER LTC4069EDC-4.4 Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. CONDITIONS ...
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ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are 5V 3.8V unless otherwise specified. (Note 2) CC BAT NTC SYMBOL PARAMETER V PROG Shutdown ...
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LTC4069-4 TYPICAL PERFOR A CE CHARACTERISTICS Battery Regulation (Float) Voltage vs Charge Current 4. 25° PROG 4.42 4.40 4.38 4.36 0 100 200 400 500 300 I (mA) ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Undervoltage Lockout Threshold Voltage vs Temperature 4.00 3.75 RISE 3.50 3.25 FALL 3.00 2.75 2.50 –50 – 100 TEMPERATURE (°C) 4069 G16 CHRG Pin Output Low Voltage vs Temperature ...
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LTC4069-4 CTIO S GND (Pin 1): Ground. CHRG (Pin 2): Open-Drain Charge Status Output. The charge status indicator pin has three states: pull-down, pulse at 2Hz and high impedance state. This output can be used ...
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W SI PLIFIED BLOCK DIAGRA – TOO COLD NOM + NTC 5 C2 TOO – HOT R NTC R9 + NTC_EN C3 – R10 PROG 0.1V + – C/10 CHRG 2 ...
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LTC4069-4.4 U OPERATIO peratures for a given application with the assurance that the charger will automatically reduce the current in worst- case conditions. The charge cycle begins when the voltage at the V rises above 3.5V and approximately 80mV above ...
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U OPERATIO age does not exceed the recharge threshold voltage when the timer ends, the timer resets and a 2.25 hour recharge cycle begins. The CHRG output assumes a strong pull- down state during recharge cycles until C/10 is reached ...
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LTC4069-4.4 U OPERATIO POWER ON TRICKLE CHARGE MODE 1/10 FULL CHARGE CURRENT CHRG STRONG PULL-DOWN 1/4 CHARGE CYCLE (1.125 HOURS) DEFECTIVE BATTERY IS V < 2.9V? BAT BAD BATTERY MODE NO CHARGE CURRENT CHRG PULSES (2Hz) V < ...
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U OPERATIO U U APPLICATIO S I FOR ATIO Undervoltage Charge Current Limiting (UVCL) The LTC4069-4.4 includes undervoltage charge (∆V current limiting that prevents full charge current until the input supply voltage exceeds approximately 220mV above the battery voltage. This ...
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LTC4069-4 APPLICATIO S I FOR ATIO tain a programmed current higher than 600mA. Since the LTC4069-4.4 will demand a charge current higher than the current limit of the input supply, the supply voltage will drop to the battery ...
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U U APPLICATIO S I FOR ATIO filter can be used on the PROG pin to measure the average battery current as shown in Figure 5. A 10K resistor has been added between the PROG pin and the filter capacitor ...
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LTC4069-4 APPLICATIO S I FOR ATIO NOM 8.87k – 0.76 • NTC + 6 R1 604Ω – R NTC 10k + 0.35 • – 0.016 • Figure 6. ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. W ...
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... OUT DC/DC Converter LTC3440 600mA (I ), 2MHz, Synchronous Buck-Boost OUT DC/DC Converter LTC4413 Dual Ideal Diode in DFN ThinSOT and PowerPath are trademarks of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● COMMENTS TM Simple ThinSOT Charger, No Blocking Diode, No Sense Resistor Needed Low Current Version of LTC1734, 50mA ≤ ...