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R5438L328BA

RICOH
Part Number R5438L328BA
Manufacturer RICOH
Description 1 to 3 Cells Li-Ion Battery Protection
Published Jul 6, 2021
Detailed Description R5438L Series 1 to 3 Cells Li-Ion Battery Protection IC for Secondary Protection No. EA-417-210518 OUTLINE The R5438L is...
Datasheet PDF File R5438L328BA PDF File

R5438L328BA
R5438L328BA

Overview
R5438L Series 1 to 3 Cells Li-Ion Battery Protection IC for Secondary Protection No.
EA-417-210518 OUTLINE The R5438L is an overcharge protection IC for 1 to 3 serial cells Li-ion / Li-polymer rechargeable battery.
This device provides the high-accuracy voltage detection function and the shutdown function can reduce the supply current to the minimum when all cell’s voltage becomes less than the shutdown detection voltage.
FEATURES  High Voltage Tolerant Process Absolute Maximum Ratings ··································· 26 V  Low Supply Current During Operation, Cell-voltage: 3.
9 V, 3-Cells ············ Typ.
0.
85 µA  High-accuracy Voltage Detection Overcharge Detector Threshold (VDET1n(1))················· 4.
10 V to 4.
65 V, in 5 mV step Overcharge Detector Threshold Accuracy ················· ± 0.
02 V (Ta = 25°C) ± 0.
025 V (0°C ≤ Ta ≤ 60°C) Overcharge Release Voltage (VREL1n(1))····················· VDET1n−0V to VDET1n−0.
5V, in 50 mV step Overcharge Detection Delay Time ··························· 1-, 2-, 4-, or 6-sec with Delay Time Shortening Function(2) Overcharge Release Voltage Condition ···················· Voltage Release Type  COUT Output (CMOS Output, Active-high) ················ Typ.
4.
7 V  Shutdown Functions Shutdown Detector Threshold ································ Typ.
3.
5 V ±0.
3 V Shutdown Current················································ Max.
0.
1µA  1 to 3 Cells Selectable Battery Protection  Compact Package DFN1814-6C ······················································ 1.
4mm x 1.
8mm APPLICATIONS  Li-Ion or Li-Polymer Battery Protection (1) VDET1n, VREL1n : n =1, 2, 3 (2) The delay time can be reduced down to approx.
1/90 by applying a 4 V ± 0.
2 V to the VDD ‒ VC1 pins.
1 SELECTION GUIDE The overcharge and the delay time are user-selectable options.
Selection Guide Product Name R5438Lxxx$∗-TR Package DFN1814-6C Quantity per Reel 5,000 pcs Pb Free Yes R5438L No.
EA-417-210518 Halogen Free Yes xxx: Specify the combination of t...


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