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Battery Protection. R5438L315AA Datasheet

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Battery Protection. R5438L315AA Datasheet






R5438L315AA Protection. Datasheet pdf. Equivalent




R5438L315AA Protection. Datasheet pdf. Equivalent





Part

R5438L315AA

Description

1 to 3 Cells Li-Ion Battery Protection



Feature


R5438L Series 1 to 3 Cells Li-Ion Batter y Protection IC for Secondary Protectio n No. EA-417-210518 OUTLINE The R5438L is an overcharge protection IC for 1 to 3 serial cells Li-ion / Li-polymer rec hargeable battery. This device provides the high-accuracy voltage detection fu nction and the shutdown function can re duce the supply current to the minimum when all cell’s vo.
Manufacture

RICOH

Datasheet
Download R5438L315AA Datasheet


RICOH R5438L315AA

R5438L315AA; ltage becomes less than the shutdown det ection voltage. FEATURES  High Volta ge Tolerant Process Absolute Maximum Ra tings ················ ·················· 2 6 V  Low Supply Current During Opera tion, Cell-voltage: 3.9 V, 3-Cells ·· ·········· Typ. 0.85 µA  High-accuracy Voltage Detection Overcha rge Detector Threshold (VDET1n(1))················· 4.10 V to 4.65 V, in.


RICOH R5438L315AA

5 mV step Overcharge Detector Threshold Accuracy ·············· ·· ± 0.02 V (Ta = 25°C) ± 0.025 V (0°C ≤ Ta ≤ 60°C) Overcharge Rel ease Voltage (VREL1n(1))······· ············· VDET1n−0V to VDET1n−0.5V, in 50 mV step Overch arge Detection Delay Time ······ ··················· · 1-, 2-, 4-, or 6-sec with Delay Time Shortening Function(2) Overcharge Release Voltage Condit.


RICOH R5438L315AA

ion ·················· ·· Voltage Release Type  COUT Outp ut (CMOS Output, Active-high) ···· ··········· Typ. 4.7 V  Shutdown Functions Shutdown Detector Th reshold ··············· ················ Typ. 3.5 V ±0.3 V Shutdown Current···· ··················· ························ Max.0.1µA  1 to 3 Cells Selectable Battery Protection  Compact Package DFN1814-6C ······.

Part

R5438L315AA

Description

1 to 3 Cells Li-Ion Battery Protection



Feature


R5438L Series 1 to 3 Cells Li-Ion Batter y Protection IC for Secondary Protectio n No. EA-417-210518 OUTLINE The R5438L is an overcharge protection IC for 1 to 3 serial cells Li-ion / Li-polymer rec hargeable battery. This device provides the high-accuracy voltage detection fu nction and the shutdown function can re duce the supply current to the minimum when all cell’s vo.
Manufacture

RICOH

Datasheet
Download R5438L315AA Datasheet




 R5438L315AA
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))····················· VDET1n0V to VDET1n0.5V, 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




 R5438L315AA
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 the overcharge detector threshold (VDET1n) and the overcharge release
voltage (VREL1n) (1).
VDET1n(2): 4.10 V to 4.65 V in 5 mV step
VREL1n(2): VDET1n – 0 V to VDET1n – 0.5 V in 50 mV step
$: Specify the combination of the overcharge detection delay time (tVDET1) and the overcharge release
delay time (tVREL1). Refer to Delay Time Code Table for details.
Delay Time Code Table
Code tVDET1 (s) tVREL1 (ms)
A
2
16
B
4
16
C
6
16
D
1
16
: Specify the function code.
Function Code Table
Code Overcharge Released Condition
A
Voltage Release
COUT Output
CMOS
“H” Active
(1) Refer to Product Code Table for details.
(2) VDET1n, VREL1n: n = 1, 2, 3
2




 R5438L315AA
Product Code List
R5438L
No. EA-417-210518
The product code is determined by the combination of the settable voltage (overcharge detector threshold:
VDET1n and overcharge release voltage: VREL1n) and the delay time (overcharge detection delay time: tVDET1 and
overcharge release delay time: tVREL1) and the function code.
Product Code Table
Product Name
R5438L301AA
R5438L301BA
R5438L303AA
R5438L303BA
R5438L304AA
R5438L304BA
R5438L305AA
R5438L305BA
R5438L306CA
R5438L308BA
R5438L312AA
R5438L312BA
R5438L315AA
R5438L317BA
R5438L322BA
R5438L327AA
R5438L328BA
R5438L329BA
Settable Voltage (V)
VDET1n
VREL1n
4.450
4.150
4.450
4.150
4.350
4.050
4.350
4.050
4.400
4.100
4.400
4.100
4.300
4.000
4.300
4.000
4.450
3.950
4.400
4.000
4.550
4.150
4.550
4.150
4.500
4.150
4.500
4.200
4.600
4.150
4.300
4.200
4.600
4.250
4.650
4.300
Delay Time
tVDET1(s)
tVREL1(ms)
2
16
4
16
2
16
4
16
2
16
4
16
2
16
4
16
6
16
4
16
2
16
4
16
2
16
4
16
4
16
2
16
4
16
4
16
3






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