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NB7144 Series
1-cell Li-ion Battery Protection IC for Low-side FETs

Download Datasheet
ECAD Model: User Guide
  • RoHS
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Description

The NB7144ZA is a 1‑cell Li‑ion / Li‑polymer battery‑protection IC that integrates high‑accuracy protection features, including overcharge, over‑discharge, overcurrent, and short‑circuit conditions. Optional over-temperature and undertemperature protection is also available.
This IC also supports Forced Standby that significantly reduces the IC’s current consumption, as well as Forced Reset function that turns off both charge and discharge FETs to allow the MCU to reboot safely.

Spec

Operating Input Voltage VDD – VSS = 1.5 V to 5.0 V
VDD – VVM = 0 V to 5.5 V
(Maximum Rating: 12 V)
Number of Cells 1
Supply Current Typ. 1.50 µA / Max. 3.00 µA (TDET: Disabled)
Typ. 2.00 µA / Max. 4.00 µA (TDET: Enabled)
Standby Current Max. 0.20 µA (VDET2: Auto release Type)
Max. 0.04 µA (VDET2: Non-Auto release Type)
Overcharge Detection Voltage 3.6 V to 4.8 V (0.005 V Step)
Overcharge Detection Voltage Accuracy ±10 mV
Overcharge Detection Delay Time 1024 ms, 4096 ms
Overdischarge Detection Voltage 2.0 V to 3.4 V (0.005 V Step)
Overdischarge Detection Voltage Accuracy ±35 mV
Overdischarge Detection Delay Time 32 ms, 64 ms, 128 ms
Discharge Overcurrent Detection Voltage VDET31: 0.0050 V to 0.0800 V (0.0005 V Step)
VDET32: 0.0100 V to 0.1000 V (0.0005 V Step)
Discharge Overcurrent Detection Voltage Accuracy VDET31: ±1.0 mV (0.0050 V to 0.0300 V), ±1.5 mV (0.0305 V to 0.0500 V), ±2.0 mV (0.0505 V to 0.0800 V)
VDET32: ±2.0 mV (0.0100 V to 0.0600 V), ±3.0 mV (0.0605 V to 0.1000 V)
Discharge Overcurrent Detection Delay Time VDET31: 8 ms, 16 ms, 32 ms, 512 ms, 1024 ms, 4096 ms
VDET32: 8 ms, 16 ms
Charge Overcurrent Detection Voltage –0.0800 V to –0.0050 V (0.0005 V Step)
Charge Overcurrent Detection Voltage Accuracy ±1.0 mV (–0.0050 V to –0.0300 V), ±1.5 mV (–0.0305 V to –0.0500 V), ±2.0 mV (–0.0505 V to –0.0800 V)
Charge Overcurrent Detection Delay Time 8 ms, 16 ms
Short Detection Voltage 0.0200 V to 0.2000 V (0.0005 V Step)
Short Detection Voltage Accuracy ±3.0 mV (0.0200 V to 0.120 V), ±5.0 mV (0.1205 V to 0.200 V)
Short Detection Delay Time 0.28 ms, 0.53 ms, 1.1 ms, 2.1 ms
Conditions for Overcharge Restoration Selectable: Auto Release1 / Auto Release2 / Latch
Conditions for Overdischarge Restoration Selectable: Auto Release / Latch / Latch2 / Latch3(Slope)
Package WLCSP-8-ZA3
0 V Battery Charging Selectable: Permission / Inhibition

Download Datasheet

Protections / Functions

Temperature Protection Reset Alarm Cell Balance Cascadable Open Wire Detection Wakeup Short-circuit Current Detection

Functional Description

Temperature Protection Temperature Protection
Reset Reset Function
Alarm Alarm Function
Cell Balance Cell Balance Function
Cascadable Cascade Connect Function
Open Wire Detection Open Wire Detect Function
Wakeup Wakeup Function
Short-circuit Current Detection Short-circuit Current Protection
Delay Time Shorting Output Delay Time Short Function

For more details, please refer to "Protecting Li-ion Batteries: Functions and Advantages".

Functional Description

Temperature Protection Temperature Protection
Reset Reset Function
Alarm Alarm Function
Cell Balance Cell Balance Function
Cascadable Cascade Connect Function
Open Wire Detection Open Wire Detect Function
Wakeup Wakeup Function
Short-circuit Current Detection Short-circuit Current Protection
Delay Time Shorting Output Delay Time Short Function

For more details, please refer to "Protecting Li-ion Batteries: Functions and Advantages".

Search for similar products under conditions below.

Category:Lithium-ion Battery Protection ICs

Features Battery Protection
Cell 1
Functions Temperature Protection,Short-circuit Current Detection

Technical Documents

  • Typical Application

    Typical Application

Quality & Packages

Product Name Compatibility Package Marking Reliability
NB7144ZAxxxxxE2S
  • gradeConsumer
 WLCSP-8-ZA3 See datasheet NB7144ZAS
  • Refer to the datasheets for the details on the product.
  • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

FAQ

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Buy / Contact

  • Purchase, Request for samples and documents
    Sales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
  • Available from 1 piece!
    Our electronic device products are available through our authorized online distributors.
  • Technical Support
NB7144 Series