R5458L102AA-TR Nisshinbo

R5458L Series 1-Cell Li-Ion or Polymer Battery Secondary Protection IC NO.EA-380-181015 OUTLINE The R5458L is a high voltage tolerant CMOS-based overcharge secondary protection IC for 1-Cell Li-ion or Li- polymer battery. The R5458L monitors the cell batteries and protects them from overcharge conditions. Internally, the R5458L consists of a voltage detector, a voltage reference unit, an oscillator, a counter, a delay circuit, and a logic circuit. The cell is monitored for overcharging condition and triggers an internal counter once the overcharge threshold is exceeded. After the overcharge detection delay time, the output of COUT is transitioned to a high level. The output of COUT goes low if the cell voltage drops below the overcharge release voltage. The output type of the COUT pin is CMOS. The R5458L is offered in a small 6-pin DFN1814-6C package. FEATURES High Voltage Tolerant Process Absolute Maximum Ratings ........................................... 30 V Low Supply Current Operating at 3.9 V Cell Voltage ...................................... Typ. 1.5 A Standby Current ............................................................. Max. 0.5 A Output Voltage COUT Pin Output ........................................................... VDD Power Supply CMOS Output, Active-high High Accuracy Voltage Detection Overcharge Detector Threshold (VDET1) ......................... 4.0 V to 4.7 V in 0.005 V step Overcharge Release Voltage (VREL1) ............................. VDET10 V to VDET10.4 V in 0.05 V step Overcharge Detector Threshold Accuracy ..................... 20 mV, Ta = 25C 25 mV, Ta = 0 to 60C Overcharge Release Type ............................................. Voltage Release Type Overcharge Output Delay Function Overcharge Detection Delay Time ................................. 2 s Overcharge Release Delay Time ................................... 16 ms Overcharge Detection Delay Time Shortening .............. Overcharge detection delay time can be shortened by short-circuiting the VSS pin and the DS pin. Compact Package DFN1814-6C ................................................................... 1.4 mm x 1.8 mm APPLICATIONS 1-Cell Li-Ion or Li-Polymer Battery Pack 1 R5458L NO.EA-380-181015 SELECTION GUIDE The overcharge detector threshold and overcharge release voltage, the overcharge detection delay time and overcharge release delay time, and the overcharge release type are user-selectable options. Selection Guide Package Quantity per Reel Pb Free Halogen Free Product Name R5458Lxxx -TR DFN1814-6C 5,000 pcs Yes Yes xxx: Specify the combination of overcharge detector threshold (VDET1) and overcharge release voltage (V ). Refer to Product Code Table for details. REL1 VDET1: 4.0 V to 4.7 V in 5 mV step V : V 0 V to 0.4 V in 50 mV step REL1 DET1 : Specify the combination of overcharge detection delay time (tVDET1) and overcharge release delay time (t ). Refer to the table below. VREL1 Delay Time Code Code t s t ms VDET1 VREL1 A 2 16 : Specify the overcharge release type. Refer to the table below. Overcharge Release Code Code Overcharge Release Type A Voltage Release Type Product Code Table The product code is determined by the combination of set output voltage (overcharge detector threshold: VDET1, overcharge release voltage: VREL1) and delay time (overcharge detection delay time: tVDET1, overcharge release delay time: tVREL1) and overcharge release type. Product Code Table Set Output Voltage V Delay Time Product Name Overcharge Release Type VDET1 VREL1 tVDET1 s tVREL1 ms R5458L101AA 4.500 4.150 2 16 Voltage Release Type R5458L102AA 4.550 4.200 2 16 Voltage Release Type R5458L103AA 4.650 4.300 2 16 Voltage Release Type R5458L104AA 4.600 4.300 2 16 Voltage Release Type 2