LTC4089EDJC-3#PBF - 

USB Power Manager, 4.35 V to 5.5 V in, DFN-22

LTC4089EDJC-3#PBF - USB Power Manager, 4.35 V to 5.5 V in, DFN-22

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Product Overview

The LTC4089EDJC-3#PBF is an USB Power Manager with high voltage Li-Ion battery charger. This device controls the total current used by the USB peripheral for operation and battery charging. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the programmed input current limit. The LTC4089-3 also accommodates high voltage power supplies, such as 12V AC/DC wall adapters, Firewire or automotive power. The LTC4089-3 provides an adaptive output that tracks the battery voltage for high efficiency charging from the high voltage input. Under these conditions, a reduced float voltage will trade-OFF initial cell capacity for the benefit of increased capacity retention over the life of the battery. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge.
  • Seamless transition between power sources - Li-Ion battery, USB and 6 to 36V external supply
  • High efficiency 1.2A charger from 6 to 36V input with adaptive output control
  • 3.95V Float voltage improves battery lifespan and high temperature safety margin
  • Load dependent charging from USB input guarantees current compliance
  • 215R Internal ideal diode plus optional external ideal diode controller provides low loss power path
  • Constant-current/constant-voltage operation with thermal feedback to maximize charging rate
  • Selectable 100% or 20% Current limit (e.g., 500mA/100mA) from USB input
  • Preset 3.95V charge voltage with ±0.8% Accuracy
  • C/10 Charge current detection output
  • NTC thermistor input for temperature qualified charging
  • Green product and no Sb/Br


Consumer Electronics, Portable Devices, Imaging, Video & Vision, Power Management

Product Information

USB Power Manager
MSL 1 - Unlimited
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