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R5433 Series
Low Supply Current 3-Cell to 5-Cell Li-ion Battery Protection IC

Product Specifications

The R5433 Series are high voltage CMOS-based process protection ICs against over-charge and over-discharge of Li-ion/Li polymer secondary batteries. The R5433 series can detect over-charge voltage, over-discharge voltage of 3, 4 or 5-stacked cells of Li-ion/Li polymer batteries.
The R5433 consists of 10 voltage detectors, a voltage reference unit, an oscillator, a counter, delay circuits, and logic circuits.
When the over-charge voltage is detected, after the IC internally prefixed delay time, the output of COUT becomes "Hi-Z" or "H" depending on the output type. When the over-discharge voltage current is detected, after the setting delay time by the internal constant current source and an external capacitor, the output of DOUT becomes "Hi-Z" or "H" depending on the output type.
After detecting over-charge, when the cell voltage becomes lower than the over-charge released voltage, the over-charge state is released and the output of COUT becomes "L". While after detecting over-discharge, when the cell voltage becomes equal or more than the over-discharge released voltage, then the over-discharge state is released, and the output of DOUT becomes "L".
If breaking wire between the cell and protection board is occurred, the wire breaking is detected, and the output of COUT becomes "Hi-Z" or "H" depending on the output type. After detecting the breaking wire, the cell and the protection board is connected again, the breaking wire detector is released and the output of COUT becomes "L".
Further, the testing time shortening function of the protection circuit board is built in the IC. By setting voltage level of DS pin as same as VDD, the output delay time of over-charge can be shortened into approximately 1/100. By setting DS pin at 3.0V, the output delay time of over-discharge can be shortened into approximately 1/100.
The output type of COUT and DOUT can be designated as CMOS type or N-channel open drain type. The output type of the R5433VxxxAA is N-channel open drain type. The output type of the R5433VxxxAB is CMOS output type. The voltage level of the output of CMOS type is in between VSS and the internal regulator output. Therefore, "H" level is the output of the internal regulator, approximately 3.6V.

FEATURES

Operating Input Voltage Range 1.7 V to 25.0 V (Absolute Maximum Rating: 30 V)
Supply Current Typ. 6.0 µA
Over-charge
(VDET1)
Detector Thresholds Range 3.6 V to 4.5 V (0.005 V Steps)
Voltage Accuracy ±25 mV
Output Delay Time 1.0 s
Over-discharge
(VDET2)
Detector Thresholds Range 2.0 V to 3.0 V (0.005 V Steps)
Voltage Accuracy ±2.5%
Output Delay Time Settable by External.Capacitance1
0V-battery charger Available
COUT/DOUT Output Nch Open Drain, CMOS
Package SSOP-16

Tap to see the table

APPLICATION INFORMATION

R5433VxxxAB (for 5-cell protection)

PIN DESCRIPTION

SSOP-16

SSOP-165.1 mm × 6.4 mm
1 DOUT
2 COUT
3 SEL2
4 SEL1
5 DS
6 CT
7 CTLT
8 VSS
9 NC
10 NC
11 VC5
12 VC4
13 VC3
14 VC2
15 VC1
16 VDD

R5433 Series for Consumer

APPLICATIONS

  • Li-ion/Li polymer protector of over-charge and over-discharge for battery pack
  • Over-charge and discharge for notebook PCs, power tools, and any other gadgets using on board Li-ion/Li Polymer battery

PRODUCT LONGEVITY PROGRAM

R5433 operate PRODUCT LONGEVITY PROGRAM (ten-year supply is maintained as of January, 2016).
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


SELECTION GUIDE

In the R5433 Series, input threshold of over-charge, over-discharge, and output delay time can be designated according to the application.

Product Name   Package Quantity per Reel
R5433VxxxA#-E2 ConsumterPLP SSOP-16 2,000
  • xxx … Serial Number for the R5433 Series designating input threshold for over-charge, ver-discharge
  • # … Select the output type
Code Output of COUT Output of DOUT COUT output logic DOUT output logic
A Nch. open drain Nch. open drain Normal state: "L"
Detected state: "Hi-Z"
Normal state: "L"
Detected state: "Hi-Z"
B CMOS CMOS Normal state: "L"
Detected state: "H"
Normal state: "L"
Detected state: "H"

DOCUMENT/CONTACT

Package*1 Reliability*2
SSOP-16 R5433V

*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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