Products > Integrated Circuits (ICs) > Power Management ICs > MC34671AEPR2
MC34671AEPR2 uDFN-8
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  • MC34671AEPR2
  • MC34671AEPR2 0
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MC34671AEPR2

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SINGLE CELL BATTERY CHG,Battery Management SNGL CELL BATERY CHG

Manufacturer :
NXP Semiconductor
Package/Case :
uDFN-8
Product Categories :
Battery Management
Datasheet:
MC34671AEPR2 PDF
RoHs Status:
Rohs
In-stock:
1900

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MC34671AEPR2 Product Details

The MC34671AEPR2 is a cost-effective fully integrated battery charger for Li-Ion or Li-Polymer batteries. It tolerates an input voltage up to 28 V, which eliminates the input over-voltage protection circuit required in handheld devices. A charge cycle includes trickle, constant-current (CC) and constant-voltage (CV) charge modes.  

    The constant-current (CC) is programmable up to 600 mA, with an external resistor.The constant voltage is fixed at 4.2 V. The trickle charge current is preset to 20% of the CC current when the battery voltage is lower than the trickle-charge threshold. The end-of-charge (EOC) current threshold is preset to 10% of the CC current to save board space and cost. A charge-current thermal foldback feature limits the charge current when the IC internal temperature rises to a preset threshold.

     The MC34671AEPR2 has a 2.6 V falling power-on-reset (POR) threshold, making it perfect to work with current-limited power supplies. Three indication pins (PPR, CHG, and FAST) can be simply interfaced to a microprocessor or LEDs. When no power supply is connected, or when disabled, the charger draws less than 1.0 µA leakage current from the battery.

Feature

  • No external MOSFET, reverse-blocking diode, or current-sense resistor are required
  • Guaranteed maximum 600 mA programmable charge current
  • ±0.7% voltage accuracy over -20 °C to 70 °C
  • ±5% current accuracy over -40 °C to 85 °C
  • 28 V maximum voltage for the power input with 11 V over-voltage protection threshold
  • 2.6 V minimum input operating voltage
  • Trickle charge for fully discharged batteries
  • Charge current monitor
  • Charge current thermal foldback

MC34671AEPR2 Block Diagram
(Picture: Diagram)

Technical Parameters

Battery Type Li-Ion, Li-Poly Charge Safety Timers No
Output Voltage 4.2 V Mounting Style SMD/SMT
Operating Supply Voltage 2.6 V to 10 V Operating Supply Current 1400 uA
Maximum Operating Temperature + 85 C Product Type Charge Management
Minimum Operating Temperature - 40 C Factory Pack Quantity 3000
Package / Case uDFN-8 Temperature Monitoring No
Packaging Reel

MC34671AEPR2 Documents

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