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R5432 Series

3-Cell to 5-Cell Li-ion Battery Protection IC

  • PLP
  • RoHS

The R5432 is a high voltage CMOS-based protection IC for over-charge /discharge of rechargeable three-cell / four-cell / five-cell Lithium-ion / Lithium- polymer battery, further include a short circuit and the protection circuits against the excess discharge current and excess charge current. Each of these ICs is composed of eighteen voltage detectors (fourteen for 3cell protection type, sixteen for 4cell protection type), a reference circuit, a delay circuit, a short detector circuit, an oscillator, a counter and a logic circuit. A more than 6 Cells battery is available by Cascade connection. The R5432 has cell-balance function to solve the unbalance condition of serially connected cells. SSOP-24 package is available.

Specs & Datasheets

Operating Input Voltage 2 V to 25 V (Maximum Rating: 30 V)
Charger Negative Input Voltage 30 V (Maximum Rating)
Number of Cells 3,4,5
Supply Current Typ. 12.0 µA
Overcharge Detection Voltage 3.6 V to 4.5 V (0.005 V Steps)
Overcharge Detection Voltage Accuracy ±25 mV
Overcharge Detection Delay Time 1.0 s
Overdischarge Detection Voltage 2.0 V to 3.0 V (0.005 V Steps)
Overdischarge Detection Voltage Accuracy ±2.5%
Overdischarge Detection Delay Time Adjustable with an external capacitor CCT1
Discharge Overcurrent Detection Voltage VDET3-1: 0.1 V to 0.3 V (0.01 V Steps)
VDET3-2: 0.25 V to 0.60 V (Varies according to versions)
Discharge Overcurrent Detection Voltage Accuracy VDET3-1: ±20 mV
VDET3-2: ±55 mV, ±70 mV, ±100 mV
Discharge Overcurrent Detection Delay Time VDET3-1/VDET3-2: Adjustable with an external capacitor CCT2
Charge Overcurrent Detection Voltage -0.05 V, -0.1 V, -0.2 V, -0.4 V
Charge Overcurrent Detection Voltage Accuracy ±30 mV (-0.05 V, -0.1 V, -0.2 V)
±40 mV (-0.4 V)
Charge Overcurrent Detection Delay Time 8 ms
Short Detection Voltage 1.0 V, 0.75 V
Short Detection Delay Time 300 µs
Conditions for Overcharge Restoration Voltage Release
Conditions for Overdischarge Restoration Voltage Release
Package SSOP-24
Cell Balancing Detection Voltage Range 3.45 V to 4.45 V (0.005 V Steps)
0 V Charge Optional

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: 5cell protection, detecting disconnection, at operating cell-balance function

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
  • plpP
SSOP-24 R5432V R5432V-FE

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 Battery Protection
Cell 3,4,5
Functions Cell Balance,Cascadable,Open Wire Detection,Short-circuit Current Detection,Delay Time Shortening
PLP Applicable