Skip to main content Skip to first level navigation
Skip to main content First level navigation Menu
Contact Us About Us
Facebook (Open link in new window) YouTube (Open link in new window) LinkedIn (Open link in new window) E-mail Newsletter
Main content
Main content

R5458 Series

1-Cell Li-ion Battery Second Protection IC

  • RoHS

The R5458 is a high voltage tolerant CMOS-based overcharge secondary protection IC for 1-Cell Li-ion or Li-polymer battery. The R5458 monitors the cell batteries and protects them from overcharge conditions.

Internally, the R5458 consists of a voltage detector, a voltage reference unit, an oscillator, a counter, a delay circuit, and a logic circuit.

The cell is monitored for overcharging condition and triggers an internal counter once the overcharge threshold is exceeded. After the overcharge detection delay time, the output of COUT is transitioned to a high level. The output of COUT goes low if the cell voltage drops below the overcharge release voltage. The output type of the COUT pin is CMOS. The R5458 is offered in a small 6-pin DFN1814-6C package.

Specs & Datasheets

Operating Input Voltage 1.5 V to 5.0 V (Maximum Rating: 12 V)
Number of Cells 1
Supply Current Typ. 1.5 µA
Standby Current Max. 0.5 µA
Overcharge Detection Voltage 4.00 V to 4.70 V (0.005 V Steps)
Overcharge Detection Voltage Accuracy ±20 mV
Overcharge Detection Delay Time 2 s
Package DFN1814-6C

Download Datasheet

Protections / Functions

Functional Description

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

Technical Documents

Typical Application

Typical Application

R1: 330 Ω, C1: 0.1 µF

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
DFN1814-6C R5458L R5458L

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

Sample / Buy

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 "Externally Configurable Protections and Their Advantages".

Search for similar products under conditions below.

Category:Lithium-ion Battery Protection ICs

Features Second Protection
Cell 1
Functions Delay Time Shortening