ltc4160 Linear Technology Corporation, ltc4160 Datasheet
ltc4160
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ltc4160 Summary of contents
Page 1
... USB On-The-Go And Overvoltage Protection DESCRIPTION The LTC ® 4160/LTC4160-1 are high effi ciency power man- agement and Li-Ion/Polymer battery charger ICs. They each include a bidirectional switching PowerPath™ controller with automatic load prioritization, a battery charger, and an ideal diode. The LTC4160/LTC4160-1’s bidirectional switching regulator ...
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... TAPE AND REEL LTC4160EPDC#PBF LTC4160EPDC#TRPBF LTC4160EPDC-1#PBF LTC4160EPDC-1#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 cations, go to: ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi ...
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... OUT VBUS PMOS Switch Off With 6.2k Series Resistor V < V OVSENS OVCUTOFF V > V OVSENS OVCUTOFF OVGATE C = 1nF LOAD LTC4160 l LTC4160 845Ω, 10x Mode R ≤ 2.49k PROG CLPROG 10x Mode PROG V > Suspend Mode, BUS UVLO I = 0μA VOUT ...
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... LTC4160/LTC4160-1 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T otherwise noted. SYMBOL PARAMETER V PROG Pin Servo Voltage PROG V PROG Pin Servo Voltage in Trickle Charge BAT < V PROG_TRKL V C/10 Threshold Voltage at PROG C/10 h Ratio PROG Pin Current PROG BAT I Trickle Charge Current ...
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... Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4160E/LTC4160E-1 are guaranteed to meet performance specifi cations from 0°C to 85°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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... LTC4160/LTC4160-1 TYPICAL PERFORMANCE CHARACTERISTICS Ideal Diode V-I Characteristics 1.0 INTERNAL IDEAL DIODE WITH SUPPLEMENTAL EXTERNAL VISHAY 0.8 Si2333 PMOS 0.6 INTERNAL IDEAL DIODE ONLY 0.4 0 BUS 0 0 0.04 0.08 0.12 0.16 FORWARD VOLTAGE (V) 41601 G07 Battery Charge Current vs V OUT Voltage 600 R = 3.01k CLPROG PROG 500 5x MODE 400 ...
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... TEMPERATURE (°C) V Quiescent Current in BUS Suspend vs Temperature BUS –40 – TEMPERATURE (°C) LTC4160/LTC4160 25°C, unless otherwise noted Current vs Load Current in BUS Suspend 0 BUS BAT = 3. 3.01k CLPROG 0.4 0.3 0.2 0.1 0 0.5 0 0.1 0.2 0.3 LOAD CURRENT (mA) 41601 G17 ...
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... LTC4160/LTC4160-1 TYPICAL PERFORMANCE CHARACTERISTICS OTG Boost Quiescent Current vs Battery Voltage 3 BAT OUT 2.5 2.0 1.5 1.0 0.5 2.7 3.9 3.0 3.3 3.6 BATTERY VOLTAGE (V) 41601 G25 OTG Boost Effi ciency vs Battery Voltage 100 V = BAT OUT 95 500mA LOAD 100mA LOAD 75 70 2.7 3.9 3.0 3.3 3.6 BATTERY VOLTAGE (V) 41601 G28 OTG Boost Transient Response V BUS 50mV/DIV ...
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... TO 10V STEP 5V/DIV 500μs/DIV OVSENS Quiescent Current vs Temperature OVSENS –40 – TEMPERATURE (°C) LTC4160/LTC4160 25°C, unless otherwise noted. A Oscillator Frequency vs Temperature 2.30 2.25 2.20 2.15 2.10 41601 G35 2.05 –40 – TEMPERATURE (°C) Rising OVP Threshold vs Temperature 6.47 6.46 6 ...
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... BUS Voltage of the Battery Charger. The majority of the portable product should be powered from V LTC4160-1 will partition the available power between the external load on V Priority is given to the external load and any extra power is used to charge the battery. An ideal diode from BAT to ...
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... NTC to ground. To disable NTC operation, connect NTC to GND and leave NTCBIAS open. Exposed Pad (Pin 21): Ground. The Exposed Pad should be connected to a continuous ground plane on the second layer of the printed circuit board by several vias directly under the LTC4160/LTC4160-1. LTC4160/LTC4160 may be used for light loads OUT . ...
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... LTC4160/LTC4160-1 BLOCK DIAGRAM 12 41601f ...
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... When acting as a step-down converter, the LTC4160/ LTC4160-1’s bidirectional switching regulator takes power from USB, wall adapters, or other 5V sources and provides power to the end product application and effi ciently charges the battery using Bat-Track ...
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... V VOLTAGE OUT CONTROLLER is the quiescent current of the LTC4160/ is the CLPROG servo voltage in CLPROG is the value of the programming CLPROG is the ratio of the measured cur- CLPROG to the sample current delivered to CLPROG. and I . Given worst-case circuit CLPROG VBUSQ is 3.01k or greater. ...
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... V be suffi cient negative slope on the inductor current when the PMOS switch balance the rise in the inductor OUT Burst Mode is a registered trademark of Linear Technology Corporation. LTC4160/LTC4160-1 and is capable of delivering at least 500mA. and prevents OUT rises above 2.8V. To prevent ...
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... ENOTG grounded, must be cycled high and then low. Ideal Diode(s) from BAT to V OUT The LTC4160/LTC4160-1 each have an internal ideal diode as well as a controller for an external ideal diode. Both the internal and the external ideal diodes are always on and will respond quickly whenever V ...
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... BAT. Capable of driving a 1nF load, the IDGATE pin can control an external P-channel MOSFET having an on-resistance of 30mΩ or lower. Suspend LDO If the LTC4160/LTC4160-1 is confi gured for USB suspend mode, the bidirectional switching regulator is disabled and the suspend LDO provides power to the V suming there is power available at V prevent the battery from running down when the portable product has access to a suspended USB port ...
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... BUS charge current has dropped to one tenth of the programmed is removed and then value, the CHRG pin goes high. The CHRG pin does not respond to the C/10 threshold if the LTC4160/LTC4160 BUS charge indications due to insuffi cient power available to the battery charger. ...
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... PAUSE EVENT TIMER RUN EVENT TIMER TIMER > 4 HOURS YES STOP CHARGING YES BAT RISING CHRG Hi-Z THROUGH V RECHRG NO BAT FALLING YES THROUGH BAT < V RECHRG V RECHRG YES NO LTC4160/LTC4160-1 INHIBIT CHARGING PAUSE EVENT TIMER < C/10 BAT YES CHRG Hi-Z NO 41601 FLOW 41601f 19 ...
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... The benefi the LTC4160/ LTC4160-1 thermal regulation loop is that charge current can be set according to actual conditions rather than ...
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... Bidirectional PowerPath Switching Regulator V and V Bypass Capacitor Selection OUT The type and value of capacitors used with the LTC4160/ LTC4160-1 determine several important parameters such input current as regulator control-loop stability and input voltage ripple. BUS Because the LTC4160/LTC4160-1 use a bidirectional ...
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... SOT-23 Battery Charger Over Programming SOT-23 The USB high power specifi cation allows for up to 2.5W SOT- drawn from the USB port. The LTC4160/LTC4160-1’s WDFN6 bidirectional switching regulator in step-down mode con- verts the voltage while limiting power to less than the amount pro- OUT grammed at CLPROG ...
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... Battery Charger Stability Considerations The LTC4160/LTC4160-1’s battery charger contains both a constant-voltage and a constant-current control loop. The constant-voltage loop is stable without any compensation when a battery is connected with low impedance leads. ...
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... R – r • NOM HOT 3 266 0 4368 . – • 100 k 104 714 . LTC4160/LTC4160-1 3 NTC BLOCK 0.765 • NTCBIAS – TOO_COLD + 4 – TOO_HOT 0.349 • NTCBIAS + + NTC_ENABLE – 0.1V Figure 7. Standard NTC Confi guration is 1.436 k 41601 F07 41601f ...
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... V observe voltage overshoot on V BUS LTC4160/LTC4160 lab supply if the overvoltage protection circuit is not used. This overshoot is caused by the inductance of the long leads from the supply to V Twisting the wires together from the supply to V ...
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... N-channel MOSFET switch. Furthermore, due to its high frequency switching circuitry imperative that the input capacitor, inductor, and output capacitor be as close to the LTC4160/LTC4160-1 as pos- sible and that there be an unbroken ground plane under the LTC4160/LTC4160-1 and all of its external high frequency components ...
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... FOR STANDARD HOST – Figure 10. LTC4160/LTC4160-1 as the B Device When laying out the printed circuit board, the following checklist should be used to ensure proper operation of the LTC4160/LTC4160-1: 1. The Exposed Pad of the package (Pin 21) should connect directly to a large ground plane to minimize thermal and electrical impedance ...
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... ID 19 NTCBIAS NTC CLPROG PROG 0.1μF 3.01k 1k 0402 USB 13 V BUS C1 1 10μF OVGATE 0805 2 OVSENS 15 I LIM0 16 I LIM1 LTC4160/LTC4160-1 6 ENOTG 7 ENCHARGER NTCBIAS NTC CLPROG PROG 3.01k 1k 0.1μF 0402 L1 3.3μH 14 SYSTEM SW LOAD 12 V OUT C3 10 IDGATE 22μ ...
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... OVSENS 15 I GND LIM0 16 LTC4160/LTC4160-1 I LIM1 6 ENOTG 7 ENCHARGER VBUSGD 5 CHRG ID 19 FAULT NTCBIAS LDO3V3 NTC CLPROG PROG 0.1μF 3.01k 1k 0402 LTC4160/LTC4160-1 L1 3.3μ 22μ 0805 + Li-Ion RTC 1μF 41601 TA04 SYSTEM LOAD 41601f 29 ...
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... TO μC C1, C3: TAYIO YUDEN JMK212BJ226MG L1: COILCRAFT LPS4018-332LM M1: SILICONIX Si2333DS M2: FAIRCHILD FDN372S R1: 1/10 WATT RESISTOR R2: VISHAY CURVE 1 30 USB 13 V BUS C1 22μF 0805 1 OVGATE 2 OVSENS 15 I LIM0 16 LTC4160/LTC4160-1 I LIM1 6 ENOTG 7 ENCHARGER NTCBIAS 100k NTC CLPROG PROG 3.01k 1k T 0.1μF ...
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... Plastic UTQFN (3mm × 4mm) (Reference LTC DWG # 05-08-1752 Rev Ø) 0.70 ±0.05 2.65 ± 0.05 PACKAGE OUTLINE 2.50 REF 3.10 ± 0.05 4.50 ± 0.05 0.55 ± 0. 0.05 TYP 3.00 ± 0.10 2.50 REF 0.127 REF 0.00 – 0.05 LTC4160/LTC4160-1 PIN 1 NOTCH R = 0.20 OR 0.25 45° CHAMFER 1.50 REF 19 20 0.40 ± 0. 2.65 ± 0.10 1.65 ± 0.10 (PDC20) UTQFN 0407 REV Ø 0.25 ± 0. 0.115 ...
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... Linear Technology Corporation 32 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● BUS V OUT IDGATE 1 OVGATE BAT 2 OVSENS 15 I LIM0 GND 16 LTC4160/LTC4160-1 I LIM1 ENCHARGER VBUSGD 6 CHRG ENOTG 19 FAULT NTCBIAS LDO3V3 NTC CLPROG PROG 0.1μF 3.01k ...