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R5458 Series
1-Cell Li-ion Battery Second Protection IC

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Product Specifications

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.

FEATURES

Operating Input Voltage Range 1.5 V to 5.0 V (Absolute Maximum Rating: 30 V)
Supply Current Typ. 1.5 µA
Standby Current Typ. 0 µA
Over-charge Detector Thresholds Range (VDET1) 4.0 V to 4.7 V (0.005 V Steps)
Release Voltage (VREL1) VDET1−0 V to VDET1−0.4 V (0.005 V Steps)
Voltage Accuracy ±20 mV
Detection Delay Time 2 s
Release Delay Time 16 ms
Release Type Voltage Release Type
COUT Pin Output VDD Power Supply CMOS Output, Active-high
Package DFN1814-6C

APPLICATION INFORMATION

R1: 330 Ω, C1: 0.1 µF

PIN DESCRIPTION

DFN1814-6C

DFN1814-6C1.4 mm × 1.8 mm
1 NC
2 COUT
3 DS
4 VSS
5 VDD
6 V−

R5458 Series for Consumer

APPLICATIONS

  • 1-Cell Li-Ion or Li-Polymer Battery Pack

SELECTION GUIDE

Product Name   Package Quantity per Reel
R5458LxxxAA-TR Consumter DFN1814-6C 5,000
  • xxx … Specify the combination of overcharge detector threshold (VDET1) and overcharge release voltage (VREL1).
    VDET1: 4.0 V to 4.7 V in 5 mV step
    VREL1: VDET1 –0 V to 0.4 V in 50 mV step

DOCUMENT/CONTACT

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Package*1 Reliability*2
DFN1814-6C R5458L

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.

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