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R5436 Series
3-Cell to 5-Cell Li-ion Battery Protection IC with Thermal Protection Function

Product Specifications

The R5436 is an overcharge, overdischarge and overcurrent protection IC for Li-ion or Li-polymer secondary battery. Overcharge, Overdischarge, Charge Overcurrent and Discharge Overcurrent for 3 to 5 serial cells can be detected. By cascade connection using the R5436, it is also possible to protect 6-serial or more cells rechargeable battery pack. The R5436 provides a cell-balancing function to equalize imbalance between cells, and it provides an open-wire detection to detect a broken wire between a battery and the circuit board. The open-wire detection is optionally selectable.

FEATURES

Operating Input Voltage Range 2.5 V to 25 V (Absolute Maximum Rating 30 V)
Charger Negative Input Voltage (V-) 30 V (Absolute Maximum Rating)
Supply Current Typ. 12.0 µA
Standby Current Typ. 6.0 µA
Over-charge (VDET1) Detector Threshold Range 3.6 V to 4.5 V (0.005 V Steps)
Voltage Accuracy ±25 mV
Output Delay Time 1.0 s
Release Voltage VDET1 –0.1 V to VDET1 –0.4 V (0.05 V Steps)
Over-discharge (VDET2) Detector Threshold Range 2.0 V to 3.2 V (0.005 V Steps)
Voltage Accuracy ±2.5%
Output Delay Time Settable by external capacitor
Release Voltage VDET2 to VDET2 +0.7 V (0.1 V Steps)
–provided, max.value is 3.2 V
Excess
discharge-current
Detector Threshold 1 0.05 V to 0.25 V (0.01 V Steps)
Detector Threshold 2 Three times VDET31
Voltage Accuracy 1 ±20 mV
Output Delay Time Settable by external capacitor
Excess
charge-current
Detector Threshold*1 -0.05 V, -0.1 V, -0.2 V
Voltage Accuracy ±30 mV
Output Delay Time 8 ms
Short Protection Detector Threshold Range*2 0.25 V to 1.0 V (0.02 V Steps)
Output Delay Time 300 µs
Cell-balance Detector Threshold Range (VCBD) 3.45 V to 4.45 V (0.005 V Steps)
Release Voltage VCBD to VCBD –0.4 V (0.05 V Steps)
Functions Zero Voltage Charging
Delay Time Shortening Function
External NTC temperature protection function
Overcharge Release Voltage Condition Voltage release type
Overdischarge Release Voltage Condition Latch type / Voltage release type
Selectable Broken-wire Detection Typ. 1.25 s
Package TSSOP-28 (JEDEC: 173 MIL)

*1: Set to meet the following equation: (3×VDET31+0.05<0.8×VSHORT).
*2: VDET32 is not detected when VDET32 is higher than VSHORT.

APPLICATION INFORMATION

5-cell Protection Battery Charger with Cell-balancing Enabled

PIN DESCRIPTION

TSSOP-28

TSSOP-289.7 mm × 6.4 mm
1 CTLC
2 CTLD
3 COUT
4 VMP
5 DRAIN
6 DOUT
7 VHC
8 SENS
9 VR
10 TEP
11 VSS
12 CT1
13 CT2
14 SEL1
15 SEL2
16 VSS0
17 CB5
18 VC5
19 CB4
20 VC4
21 CB3
22 VC3
23 CB2
24 VC2
25 CB1
26 NC
27 VC1
28 VDD

R5436 Series for Consumer

APPLICATIONS

  • Li-ion/Li-polymer battery protection for electric tool and electric bicycle, etc.

SELECTION GUIDE

In the R5436, the set voltage, the delay time, and the optional function can be designated.

Product Name   Package Quantity per Reel
R5436TxxxB$-E2 Consumter TSSOP-28 3,000
  • xxx … Specify a combination of set output voltages.
  • $ … Specify a combination of the optional functions.
Code Overcharge
Released Type
Overdischarge
Released Type
0 V Charging Open-wire
Detection
A Voltage Release Latch Available Available
B Voltage Release Voltage Release Available Unavailable

DOCUMENT/CONTACT

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Technical Support

Package*1 Reliability*2
TSSOP-28 R5436T

*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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