LTC4075HVXEDD LINER [Linear Technology], LTC4075HVXEDD Datasheet
LTC4075HVXEDD
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LTC4075HVXEDD Summary of contents
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FEATURES 22V Maximum Voltage for Wall Adapter and ■ USB Inputs ■ Charge Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs Automatic Input Power Detection and Selection ■ ■ Charge Current Programmable up to 950mA from Wall Adapter Input ...
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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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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are DCIN Undervoltage Lockout Voltage UVDC V USBIN Undervoltage Lockout Voltage UVUSB V DCIN Overvoltage Lockout Voltage OVDC V USBIN Overvoltage Lockout Voltage OVUSB V V – V Lockout Threshold ...
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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 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Charge Current vs Ambient Temperature 900 R = 1.24k IDC 800 700 600 IDC 500 400 300 200 DCIN USBIN 100 BAT θ = 30°C/W JA ...
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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 ...
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PIN FUNCTIONS USBIN (Pin 1): USB Input Supply Pin. This input provides power to the battery charger assuming a voltage greater than V and less than V UVUSB OVUSB 3.95V to 6V respectively). However, the DCIN input will take priority ...
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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 ...
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OPERATION The LTC4075HVX is designed to effi ciently manage charg- ing of a single-cell lithium-ion battery from two separate power sources: a wall adapter and USB power bus. Us- ing the constant-current/constant-voltage algorithm, the charger can deliver up to 950mA ...
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LTC4075HVX OPERATION Automatic Recharge In standby mode, the charger sits idle and monitors the battery voltage using a comparator with a 4.1ms fi lter time ( charge cycle automatically restarts when the RECHRG battery voltage falls below 4.075V ...
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OPERATION 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 ...
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LTC4075HVX APPLICATIONS INFORMATION Using a Single Charge Current Program Resistor The LTC4075HVX can program the wall adapter charge current and USB charge current independently using two program resistors, R and R IDC IUSB charger circuit that sets the wall adapter ...
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APPLICATIONS INFORMATION Assuming θ is 40°C/W (see Thermal Considerations), JA the ambient temperature at which the LTC4075HVX will begin to reduce the charge current is approximately 125°C – (5V – 3.3V) • (800mA) • 40°C ...
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LTC4075HVX APPLICATIONS INFORMATION In this circuit, capacitor C2 holds MN1 off when the cable is fi rst connected. Eventually C2 begins to charge up to the USB input voltage applying increasing gate drive to MN1. The long time constant of ...
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PACKAGE DESCRIPTION 3.50 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no ...
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LTC4075HVX TYPICAL APPLICATION WALL ADAPTER POWER RELATED PARTS PART NUMBER DESCRIPTION LTC3455 Dual DC/DC Converter with USB Power Management and Li-Ion Battery Charger LTC4053 USB Compatible Monolithic Li-Ion Battery Charger LTC4054/LTC4054X Standalone Linear Li-Ion Battery Charger with Integrated Pass Transistor ...