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Description
The QFEM-7781-TR1 is an electronic component in the IC Chips category. It is a lithium-ion rechargeable battery protection IC that incorporates high-accuracy voltage detection circuits and delay circuits. This component is specifically designed for a 3-serial-cell lithium-ion battery pack.
Specifications and features
(1) Internal high-accuracy voltage detection circuit: - Over charge detection voltage: 4.10 ± 0.05 V to 4.35 ± 0.05 V (50 mV-step) - Over charge release voltage: 3.85 ± 0.10 V to 4.35 ± 0.10 V (50 mV-step) (The over charge release voltage can be selected within the range where a difference from over charge detection voltage is 0 V to 0.3 V) - Over discharge detection voltage: 2.00 ± 0.08 V to 2.70 ± 0.08 V (100 mV-step) - Over discharge release voltage: 2.00 ± 0.10 V to 3.70 ± 0.10 V (100 mV-step) (The over discharge release voltage can be selected within the range where a difference from over discharge detection voltage is 0 V to 1.0 V) - Over current detection voltage: 1.0.15 ± 0.015 V to 0.5 ± 0.05 V (50 mV-step) (2) High input-voltage device (absolute maximum rating: 26 V) (3) Wide operating voltage range: 2 V to 24 V (4) The delay time for every detection can be set via an external capacitor. (5) Three over current detection levels (protection for short-circuiting) (6) Internal charge/discharge prohibition circuit via the control terminal (7) The function for charging batteries from 0 V is available. (8) Low current consumption: - Operation: 50 µA max. (+25 °C) - Power-down: 0.1 µA max. (+25 °C)
Application Scenarios
The QFEM-7781-TR1 is commonly used in lithium-ion rechargeable battery packs.
Comparison
Advantages- Provides high-accuracy voltage detection for reliable battery protection
- Wide operating voltage range allows for flexibility in battery pack design
- Offers multiple over current detection levels for added protection against short-circuiting
- Low current consumption minimizes power usage
Disadvantages- Not suitable for battery packs with more or less than 3 serial cells
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
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Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
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Popular parts of the same kind
- Datasheet: Download QFEM-7781-TR1
- Chipdatas Part: CD86-QFEM-7781-TR1
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/13 16:37 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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The fee is charged according to the rule of PayPal.
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Western Union charge US$0.00 banking fee.
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