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R5460xxxxxx Series


Li-ION/POLYMER 2-CELL PROTECTOR




| * Outline | * Features | * Applications | * Documenets Download |



Outline



The R5460xxxxxx Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Lithium-ion (Li+) / Lithium polymer, further include a short circuit protection circuit for preventing large external short circuit current and the protection circuits against the excess discharge-current and excess charge current.

Each of these ICs is composed of six voltage detectors, a reference unit, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit. When the over-charge voltage threshold or excess-charge current threshold crosses the each detector threshold from a low value to a high value, the output of COUT pin switches to “L” level after internal fixed delay time. To release over-charge detector after detecting over-charge, the detector can be reset and the output of COUT becomes "H" when a kind of load is connected to VDD after a charger is disconnected from the battery pack and the cell voltage becomes lower than over-charge detector threshold. In case that a charger is continuously connected to the battery pack, if the cell voltage becomes lower than the over-charge detector threshold, over-charge state is also released.

The output of DOUT pin, the output of the over-discharge detector and the excess discharge-current detector, switches to “L” level after internally fixed delay time, when discharged voltage crosses the detector threshold from a high value to a value lower than VDET2.

To release over-discharge detector, after detecting over-discharge voltage, connect a charger to the battery pack, and when the battery supply voltage becomes higher than over-discharge detector threshold. In case of "A" version, when the cell voltage becomes equal or more than the released voltage from over-discharge, over-discharge detector is released.
Even if a battery is discharged to 0V, charge current is acceptable.

After detecting excess-discharge current or short current, when the load is disconnected, the excess discharged or short condition is released and DOUT becomes “H”.

After detecting over-discharge voltage, supply current will be kept extremely low by halting internal circuits' operation.

When the output of COUT is “H”, if V- pin level is set at -1.6V, the delay time of detector can be shortened. Especially, the delay time of the over-charge detector can be reduced into approximately 1/60 and test time for protection circuit PCB can be reduced. The output type of COUT and DOUT is CMOS.

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Features


*Manufactured with High Voltage Tolerant
Process
Absolute Maximum Rating 30V
*Low supply current
· Supply current (At normal mode) TYP. 4.0 µA
· Standby current Typ. 1.2µA (A/D version)
Max. 0.1µA (B/Cversion)
*High accuracy detector threshold
· Over-charge detector (Topt=25°C) ±25mV
  (Topt=-5 to 55°C) ±30mV
· Over-discharge detector ±2.5%
· Excess discharge-current detector ±15mV
· Excess charge-current detector ±40mV
*Variety of detector threshold
· Over-charge detector threshold (A/B/C version) 4.0V - 4.5V step of 0.005V(VD1U/VD1L)
· Over-charge discharge threshold (D version) 3.5V - 4.0V step of 0.005V(VD1U/VD1L)
· Over-discharge detector threshold 2.0V - 3.0V step of 0.005V(VD2U/VD2L)
· Excess discharge-current threshold 0.05V-0.20V step of 0.005V
· 3 options of Excess charge-current
threshold
(1) -0.4V ±40mV
(2) -0.2V ±30mV
(3) -0.1V ±30mV
  · Over-charge released voltage 0.1V-0.4V step of 0.05V(VH1U/VH1L)
  · Over-discharge released voltage 0.2V-0.7V step of 0.1V(VH2U/VH2L)
*Internal fixed Output delay time
· Over-charge detector Output Delay 1.0s
· Over-discharge detector Output Delay 128ms
· Excess discharge-current detector Output Delay 12ms
· Excess charge-current detector Output Delay 8ms
· Short Circuit detector Output Delay 300µs
*Output Delay Time Shortening Function
· At COUT is “H”, if V- level is set at –1.6V, the Output Delay time of detect and release the over-charge and over-discharge can be reduced. (Delay Time for over-charge becomes about 1/60 of normal state.)
*0V-charge option acceptable
*Ultra Small package SOT-23-6, PLP1820-6
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Applications

Li+ /Li Polymer protector of over-charge, over-discharge, excess-current for battery pack
High precision protectors for cell-phones and any other gadgets using on board Li+ / Li Polymer battery
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Documents Download


Data Sheet
(PDF)
Package Info.
(PDF)
Mark Info.
(PDF)
Quality Assurance Data
(PDF)
*R5460xxxxxx Series
EA-165-070525(575KB)
SOT-23-6 to be prepared *Reliability to be prepared
PLP1820-6 to be prepared *Reliability to be prepared

* All PDF files are less than 1MB unless otherwise stated.
* If you don't have Adobe Reader, you can download free.
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Quick Links

* Quality Assurance System
(PDF:175KB)
* Inductor Information
(PDF:70KB)


Product Catalog

Selection Guide
Selection guide is available for download in PDF format.



Discontinued Products

* Power Management ICs
* Real-time clock ICs


Lead (Pb) Free Information

All of the Lead-free products comply with RoHS Directive. RoHS Compliant


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