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R5487/R5497 Series
1-Cell Li-ion Battery Protection IC

Product Specifications

The R5487/R5497 Series is high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion/Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and excess charge/discharge-current. The R5487/R5497 Series is composed of four voltage detectors, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits.
The output of Over-charge detector or Excess charge-current detector switches to "L" level after internally fixed delay time, when discharged voltage crosses the detector threshold from a low value to a high value.
Output type of COUT and DOUT are CMOS. The R5487/R5497 Series have DFN1414-6B and DFN1814-6B.

FEATURES

Operating Input Voltage Range 1.5 V to 5.0 V (Absolute Maximum Rating: 12 V)
Charge Negative Input Voltage (V-) -30 V (Absolute Maximum Rating)
Supply Current Typ. 3.0 µA
Standby Current Max. 0.1 µA (Over-discharge Latch type)
Max. 0.5 µA (Over-discharge Auto-release type)
Over-charge Detector Threshold Range 4.2 V to 4.6 V (0.005 V Steps)
Detector Voltage Accuracy ±20 mV
Output Delay Time 1.0 s
Over-discharge Detector Threshold Range 2.0 V to 3.0 V (0.001 V Steps)
Release Threshold Range 2.4 V to 3.2 V (0.001 V Steps)
Detector Voltage Accuracy ±35 mV
Output Delay Time 20 ms
Excess
discharge-current (VDET3)
Detector Threshold Range 0.025 V to 0.150 V (0.001 V Steps)
Detector Voltage Accuracy ±10 mV (VDET3≥0.100V)
±10% (0.050V≤VDET31<0.100V)
±5 mV (VDET31<0.050V)
Output Delay Time 12 ms
Excess
charge-current (VDET4)
Detector Threshold Range -0.15 V to -0.02 V (0.001 V Steps)
Detector Voltage Accuracy ±10% (VDET4≤-0.05V)
±5 mV (VDET4>-0.05V)
Output Delay Time 8 ms
Short Protection Detector Threshold Range 0.15 V to 0.40 V (0.005 V Steps)
Output Delay Time 250 µs
Output Delay Time Shortening Function At COUT is "H", if V- level is set at typically -2V, the Output Delay time of all items except short-circuit can be reduced. (Delay Time for over-charge becomes about 1/60 of normal state.)
0V-battery charge option Available / Unavailable
Conditions for release over-charge detector Latch type / Auto Release type
Conditions for release over-discharge detector Latch type / Auto Release type
Conditions for release short-current detector Normal type / Auto Release type *1
Packages DFN1414-6B, DFN1814-6B
  • *1: Normal type: Return Load Resistance Threshold from Over-Discharge Current Status is less than about 300 k ohm.
    Auto Release type: Return Load Resistance Threshold from Over-Discharge Current Status is less than 25 k ohm.
    (Ta =25°C)

Tap to see the table

APPLICATION INFORMATION

PIN DESCRIPTION

DFN1414-6B

DFN1414-6B1.4 mm × 1.4 mm
  R5487 R5497
1 COUT V-
2 NC COUT
3 DOUT DOUT
4 VSS VSS
5 VDD VDD
6 V- NC

*) The tab is substrate level (GND).

DFN1814-6B

DFN1814-6B1.4 mm × 1.8 mm
  R5487
1 NC
2 COUT
3 DOUT
4 VSS
5 VDD
6 V-

R5487/R5497 Series for Consumer

APPLICATIONS

  • Li-ion / Li polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack
  • High precision protectors for cell-phones and any other gadgets using on board Li-ion / Li polymer battery

SELECTION GUIDE

Product Name   Package Quantity per Reel
R5487L5xx$#-TR-FE
R5497L5xx$#-TR-FE
Consumter DFN1414-6B 5,000
R5487L1xx$#-TR-FE Consumter DFN1814-6B 5,000
  • xx … Setting voltage version
  • $ … Designation of delay time version
  • # … Designation of Function version
# Overcharge
Released Type
Overdischarge
Released Type
Excess-discharge
Current *1
0 V Charging
D Auto-Release Auto-Release Normal Available
F Auto-Release Auto-Release Normal Unavailable
M Auto-Release Auto-Release Auto-Release Available
P Auto-Release Auto-Release Auto-Release Unavailable
Q Latch Latch Auto-Release Available
  • *1: Return Load Resistance Threshold from Over-Discharge Current Status
    Normal : Less than about 300 k ohm
    Auto-Release : Less than 20 k ohm

DOCUMENT/CONTACT

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Technical Support

Package*1 Reliability*2
DFN1414-6B R5487L5xx
R5497L5xx
DFN1814-6B R5487L1xx

*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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