LTC4053-4.2 LINER [Linear Technology], LTC4053-4.2 Datasheet
LTC4053-4.2
Related parts for LTC4053-4.2
LTC4053-4.2 Summary of contents
Page 1
... LTC and LT are registered trademarks of Linear Technology Corporation. Protected by U.S. Patents including 6522118, 6700364. 9 SYSTEM LOAD + Li-Ion BATTERY 8 SUSPEND USB CONTROL 3.74k µC 100mA/ 500mA 4053TA01 LTC4053-4.2 USB Compatible U 4053 is a standalone linear charger for lithium- Charge Current vs Input Voltage 600 T = 25° PROG V = 3.95V BAT 500 ...
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... LTC4053-4 ABSOLUTE AXI U RATI GS Input Supply Voltage (V ) ....................................... 7V CC BAT ........................................................................... 7V NTC, SHDN, TIMER, PROG ............ –0. CHRG, FAULT, ACPR .................................. –0. BAT Short-Circuit Duration .......................... Continuous BAT Current (Note 2) ............................................. 1.3A PROG Current (Note 2) ....................................... 1.3mA U PACKAGE/ORDER I FOR ATIO TOP VIEW 10 CHRG 1 ACPR V BAT ...
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... Note 4: Failure to solder the exposed backside of the package to the PC board will result in a thermal resistance much higher than 40°C/W. Note 5: Supply current includes PROG pin current (approximately 50µA) but does not include any current delivered to the battery through the BAT pin (approximately 50mA). LTC4053-4.2 MIN TYP MAX UNITS 1 ...
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... LTC4053-4 TYPICAL PERFOR A CE CHARACTERISTICS Battery Regulation Voltage vs Battery Charge Current 4. 25° PROG 4.20 4.19 4.18 4.17 4. 100 150 200 250 300 350 400 450 500 I (mA) BAT 4053 G01 Charge Current vs Input Voltage 600 T = 25° PROG V = 3.95V ...
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... LTC1323 • TPC05 Timer Error –1 –2 –3 –4 –5 50 125 75 100 4 LTC1323 • TPC05 LTC4053-4.2 PROG Pin Voltage vs Temperature Constant Current Mode 1.515 BAT 1.510 PROG 1.505 1.500 1.495 1.490 1.485 7 –50 – ...
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... LTC4053-4 CTIO S CHRG: Open-Drain Charge Status Output. When the battery is being charged, the CHRG pin is pulled low by an internal N-channel MOSFET. When the charge current drops to 10% of the full-scale current, the N-channel MOSFET latches off and a 30µA current source is con- nected from the CHRG pin to ground ...
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... LOGIC 10 ACPR ACPR C/10 3 FAULT FAULT CHARGE COUNTER OSCILLATOR 2.485V 4 TIMER C TIMER × – – 2.485V REF R3 1.5V R4 0.15V + C2 R5 – – TO BAT 7 PROG R PROG Figure 1 LTC4053-4 ×1000 BAT 9 30µ – 8 SHDN 5 GND 4053 BD 4053fa 7 ...
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... LTC4053-4.2 U OPERATIO The LTC4053 is a linear battery charger designed primarily for charging single cell lithium-ion batteries. Featuring an internal P-channel power MOSFET, the charger uses a constant-current/constant-voltage charge algorithm with programmable current and a programmable timer for charge termination. Charge current can be programmed up to 1.25A with a final float voltage accuracy of ±1%. No ...
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... MOSFET, MN1 and an extra 3k program resistor can be used to increase the charge current to 1A when the = 25µA) by pulling the wall adapter is present. 5V WALL ADAPTER 1A I USB POWER 500mA I Figure 2. Combining Wall Adapter and USB Power LTC4053-4.2 = 1500V/0.5A = 3kΩ • 1000 PROG PROG I LTC4053 CHG CHG 9 ...
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... LTC4053-4 APPLICATIO S I FOR ATIO Programming The Timer The programmable timer is used to terminate the charge cycle. The timer duration is programmed by an external capacitor at the TIMER pin. The total charge time is: Time (Hours Hours) • (C TIMER C = 0.1µF • Time (Hours)/3 (Hours) ...
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... NTC thermistor to the battery and not to the LTC4053. . For HOT Furthermore essential that the made according to standard Kelvin sense tech- HOT niques. Since essential to minimize voltage drops between the V input pin and the top of R LTC4053-4.2 – 7 TOO COLD + + 1 TOO HOT – ...
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... LTC4053-4 APPLICATIO S I FOR ATIO NTC Trip Point Errors When a 1% resistor is used for R HOT the 50°C trip point is determined by the tolerance of the NTC thermistor. A typical 10k NTC thermistor has a ±10% tolerance. By looking up the temperature coefficient of the thermistor at 50°C, the tolerance error can be calculated in degrees centigrade ...
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... GND is recommended at the BAT pin to keep ripple voltage low when the battery is disconnected. ° the constant-current mode it is the PROG pin that ° the feedback loop and not the battery. The constant current mode stability is affected by the impedance at the LTC4053-4.2 2 double- 4053fa 13 ...
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... LTC4053-4 APPLICATIO S I FOR ATIO PROG pin. With no additional capacitance on the PROG pin, stability is acceptable with program resistor values as high as 50k. However, additional capacitance on this node reduces the maximum allowed program resistor. The pole frequency at the PROG pin should be kept above 500kHz. ...
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... TYP 0.53 ± 0.01 (.021 ± .006) DETAIL “A” SEATING PLANE 0.17 – 0.27 (.007 – .011) TYP LTC4053-4.2 BOTTOM VIEW OF EXPOSED PAD OPTION 2.06 ± 0.102 (.081 ± .004) 1 1.83 ± 0.102 (.072 ± .004) 10 0.497 ± 0.076 (.0196 ± .003) ...
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... Full Featured Single Cell Li-Ion Charger SHDN ACPR CHRG FAULT I = 500mA 4.7µF LTC4053-4.2 BAT 6 9 NTC BAT 1µ TIMER PROG Li-Ion NTC 10k CELL GND 3k 1Ω 0.1µF 4053 F08 LT/LT 0705 REV A • PRINTED IN USA © ...