ltc4075hvx Linear Technology Corporation, ltc4075hvx Datasheet
ltc4075hvx
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ltc4075hvx Summary of contents
Page 1
... No external sense resistor or blocking diode is required for charging due to the internal MOSFET architecture. The LTC4075HVX features a maximum 22V rating for both wall adapter and USB inputs although charging stops if the selected power source exceeds the overvoltage limit. ...
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... T JMAX EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER PART NUMBER LTC4075HVXEDD 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 specifi ed with wider operating temperature ranges. ...
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... Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4075HVX is guaranteed to meet the 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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... LTC4075HVX TYPICAL PERFORMANCE CHARACTERISTICS Regulated Output (Float) Voltage vs Charge Current 4. DCIN USBIN 4.24 4.22 4. 1.24k IDC 4. IDC IUSB 4.16 4.14 4.12 4.10 0 100 200 300 400 500 600 700 800 I (mA) BAT 4075hvx G01 IUSB Pin Voltage vs Temperature (Constant-Current Mode) 1.008 USBIN 1.006 1.004 1 ...
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... DCIN Shutdown Current vs Temperature ENABLE DCIN 4.3V DCIN –50 – TEMPERATURE (°C) LTC4075HVX T = 25°C unless otherwise noted. A Charge Current vs Battery Voltage 1000 800 600 400 200 = 1.24V DCIN USBIN = 1.25V IDC = 30°C/W θ = 30°C 7.5 8 ...
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... LTC4075HVX TYPICAL PERFORMANCE CHARACTERISTICS Undervoltage Lockout Threshold vs Temperature 4.25 4.20 DCIN UVLO 4.15 4.10 4.05 4.00 USBIN UVLO 3.95 3.90 3.85 – TEMPERATURE (°C) Recharge Threshold Voltage vs Temperature 4. DCIN USBIN 4.09 4.07 4.05 4.03 – TEMPERATURE (°C) 6 6.10 6.05 6.00 5.95 5.90 5.85 5. 4075hvx G19 9.0 8.5 8.0 7.5 7.0 6.5 6 4075hvx G21 T = 25°C unless otherwise noted. A Overvoltage Lockout Threshold ...
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... LED (see Table 1 for more detail). ⎯ C ⎯ H ⎯ R ⎯ G (Pin 5): Open-Drain Charge Status Output. When the LTC4075HVX is charging, the ⎯ C ⎯ H ⎯ R ⎯ G pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, ⎯ C ⎯ H ⎯ R ⎯ G becomes high impedance. This output is capable of driving an LED ...
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... LTC4075HVX BLOCK DIAGRAM DCIN 10 PWR 4 + – 4.15V DCIN UVLO + – BAT + – 6V DCIN OVLO + 6 ENABLE 2M – 0.9V + 4.075V – BAT RECHARGE – 0.1V CHRG 5 + TERMINATION 8 BAT 9 CC/CV REGULATOR DC_ENABLE USB_ENABLE CHARGER CONTROL I /1000 I /1000 I /1000 BAT BAT BAT GND ITERM IDC IUSB ...
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... BAT pin. In this state, any load IDC on the BAT pin must be supplied by the battery. 1000 IUSB *Any external sources that hold the ITERM pin above 100mV will prevent the LTC4075HVX from terminating a charge cycle. LTC4075HVX V IDC • 1000 , ( arg ...
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... The charge status open drain output ( ⎯ C ⎯ H ⎯ R ⎯ has two states: pull-down and high impedance. The pull-down state indicates that the LTC4075HVX charge cycle. Once the charge cycle has terminated or the LTC4075HVX is disabled, the pin state becomes high impedance. ...
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... The USB power status open drain output (USBPWR) has two states: pull-down and high impedance. The high imped- ance state indicates that the LTC4075HVX is being powered from the USBIN input. The pull-down state indicates that the charger is either powered from DCIN UVLO or an OVLO condition (see Table 1) ...
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... LTC4075HVX automatically reduces the charge 4075hvx F02 current during high power conditions. The conditions that cause the LTC4075HVX to reduce charge current through thermal feedback can be approximated by considering the power dissipated in the IC. Most of the power dissipation 500mA BAT is generated from the internal charger MOSFET ...
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... To prevent excessive voltage from damaging the LTC4075HVX during a hot insertion best to have a low voltage coeffi cient capacitor at the input pins to the LTC4075HVX. This is achievable by selecting an X5R or X7R ceramic capacitor that has a higher voltage rating than that required for the application ...
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... With suffi cient 14 supply voltage, a series blocking diode can be used. In other cases where the voltage drop must be kept low, a P-channel MOSFET can be used (as shown in Figure 5). DRAIN-BULK DIODE OF FET LTC4075HVX WALL DCIN ADAPTER Figure 5. Low Loss Reverse Polarity Protection 4075hvx F05 4075hvxf ...
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... ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE LTC4075HVX R = 0.115 0.38 ± 0.10 TYP 6 10 3.00 ± ...
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... Low Loss PowerPath™ Controller in ThinSOT 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 ● Full Featured Li-Ion Charger LTC4075HVX DCIN BAT USB USBIN 1k 1μF 1μF PWR ...