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R5439 Series
2-Cell to 4-Cell Li-ion Battery Second Protection IC with VR

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Product Specifications

The R5439 is an overcharge protection IC for 2 to 4 serial cell Li-ion or Li-polymer secondary battery. Internally, the R5439 consists of high-accuracy voltage detection circuit, a delay circuit, and a voltage regulator for operating the external real-time clock. The two-stage shut-down detection circuit can reduce the supply current to the minimum.

FEATURES

Operating Input Voltage Range 4.0 V to 25 V or VC1 +5 V (Absolute Maximum Rating 32 V)
Supply Current Typ. 4.0 µA
Standby Current Max. 0.2 µA
Built-in Regulator Output Voltage Range 2.9 V to 3.7 V (0.1 V Steps)
Output Voltage Accuracy ± 2%
COUT Output Typ. 4.7 V (CMOS Output, Active-high)
Overcharge (VDET1) Detector Threshold Range 4.2 V to 4.6 V (0.005 V Steps)
Detector Threshold Accuracy ±0.02 V
Detection Delay Time 2 s, 4 s, 6 s with Delay Time Shortening Function*1
Release Voltage VDET1 to VDET1−0.4 V (0.05 V Steps)
Min. 4.15 V
Release Voltage Condition Voltage Release Type
Shutdown 1 Detector Threshold 3.8 V ±0.3 V
Detection Delay Time none
Shutdown 2 (VSHT2) Detector Threshold Range 2.3 V to 2.8 V (0.1 V Steps)
Detector Threshold Accuracy ±0.05 V
Detection Delay Time 2 s, 4 s, 6 s
Release Voltage VSHT2 +0.2 V
Functions 2 to 4 Cells Selectable Battery Protection
Timer Reset Delay Function
Package DFN (PLP) 2020-8

*1: The delay time can be reduced down to approx. 1/80 by applying a 4 V ± 0.2 V to the VDD ‒ VC1 pins.

APPLICATION INFORMATION

4-cell Protection Circuit
(CMOS Output, Active-high)

Note: Connect the pins in the following order: B-, B3, B2, B1, and B+.
RVDD: 100 Ω, R1~4: 1000 Ω, CVDD,C1~4,CVROUT: 0.1 µF

PIN DESCRIPTION

DFN(PLP)2020-8

DFN(PLP)2020-82.0 mm × 2.0 mm
1 VDD
2 VC1
3 VC2
4 VC3
5 VC4
6 VSS
7 COUT
8 VROUT

*) The tab is substrate level (GND).


R5439 Series for Consumer

APPLICATIONS

  • Li-Ion or Li-Polymer Battery Protection

PRODUCT LONGEVITY PROGRAM

R5439 operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


SELECTION GUIDE

The overcharge and the delay time are user-selectable options.

Product Name   Package Quantity per Reel
R5439Kxxx$#-TR ConsumterPLP DFN (PLP) 2020-8 5,000
  • xxx … Specify the combination of the overcharge detector threshold (VDET1n), the overcharge release voltage (VREL1n), the shutdown 2 detector threshold (VSHT2n) and the voltage regulator output voltage (VROUT).
    VDET1n*1: 4.2 V to 4.6 V in 5 mV step
    VREL1n*1: VDET1n – 0 V to VDET1n – 0.4 V in 50 mV step, Min. 4.15 V
    VSHT2n*1: 2.3 V to 2.8 V in 100 mV step
    VROUT: 2.9 V to 3.7 V in 0.1 V step
  • $ … Specify the combination of the overcharge detection delay time (tVDET1), the shutdown 2 detection delay time (tVSHT2) and the overcharge release delay time (tVREL1) and the overcharge detection timer reset delay time (tVTR).
Code tVDET1 (s) tVSHT2 (s) tVREL1 (ms) tVTR (ms)
A 2 2 16 6
B 4 2 16 6
C 6 2 16 6
D 2 4 16 6
E 4 4 16 6
F 6 4 16 6
G 2 6 16 6
H 4 6 16 6
J 6 6 16 6
K 1.5 4.5 12 4.5
  • # … Specify the timer reset delay time option.
    A: Timer Reset Delay Time: No
    B: Timer Reset Delay Time: Yes

*1: VDET1n, VREL1n, VSHT2n : n =1, 2, 3, 4

DOCUMENT/CONTACT

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Package*1 Reliability*2
DFN(PLP)2020-8 R5439K

*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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