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LTC4089-5

Features: Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply High Effi ciency 1.2A Charger from 6V to 36V Input with Adaptive Output Control (LTC4089) Load Dependent Charging from USB Input Guarantees Current Compliance 215m Internal Ideal Diode pl...

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SeekIC No. : 004402455 Detail

LTC4089-5: Features: Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply High Effi ciency 1.2A Charger from 6V to 36V Input with Adaptive Output Control (LTC408...

LTC4089-5 Data Sheet

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Part Number:
LTC4089-5
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply
High Effi ciency 1.2A Charger from 6V to 36V Input with Adaptive Output Control (LTC4089)
Load Dependent Charging from USB Input Guarantees Current Compliance
215m Internal Ideal Diode plus Optional External Ideal Diode Controller Provides Low Loss Power Path When External Supply/USB Not Present
Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate without Risk of Overheating
Selectable 100% or 20% Current Limit (e.g., 500mA/ 100mA) from USB Input
Preset 4.2V Charge Voltage with 0.8% Accuracy
C/10 Charge Current Detection Output
NTC Thermistor Input for Temperature Qualifi ed Charging
Tiny (6mm 3mm 0.75mm) 22-Pin DFN Package


Application

Portable USB Devices-GPS Receivers, Cameras, MP3 Players, PDAs


Pinout

Connection Diagram


Specifications

BOOST ....................................................... 0.3V to 50V
BOOST above SW .....................................................25V
HVIN, HVEN ................................................ 0.3V to 40V
IN, OUT, HVOUT
t < 1ms and Duty Cycle < 1% ...................... 0.3V to 7V
DC ............................................................... 0.3V to 6V
BAT .............................................................. 0.3V to 6V
NTC, TIMER, PROG, CLPROG ..........0.3V to (VCC + 0.3V)
CHRG, HPWR, SUSP, HVPR .......................... 0.3V to 6V
Pin Current, DC
IN, OUT, BAT (Note 6) .............................................2.5A
Operating Temperature Range
LTC4089E ................................................. 40 to 85
Maximum Operating Junction Temperature .......... 110
Storage Temperature Range .................. 65 to 125


Description

The LTC®4089/LTC4089-5 are USB power managers plus high voltage Li-Ion battery chargers. These devices control 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/LTC4089-5 also accommodate high voltage power supplies, such as 12V AC-DC wall adapters, FireWire, or automotive power.

The LTC4089 provides an adaptive output that tracks the battery voltage for high effi ciency charging from the high voltage input. The LTC4089-5 provides a fi xed 5V output from the high voltage input to charge single cell Li-Ion batteries. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge. Also featured is programmable total charge time, an NTC thermistor input used to monitor battery temperature while charging and automatic recharging of the battery.




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