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Battery Protection. R5436T508BA Datasheet

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Battery Protection. R5436T508BA Datasheet






R5436T508BA Protection. Datasheet pdf. Equivalent




R5436T508BA Protection. Datasheet pdf. Equivalent





Part

R5436T508BA

Description

3 to 5 Serial Cell Li-Ion or Li-Polymer Battery Protection



Feature


R5436T Series 3 to 5 Serial Cell Li-Ion or Li-Polymer Battery Protection IC NO. EA-322-191206 OUTLINE The R5436T is an overcharge, overdischarge and overcurre nt protection IC for Li-ion or Li-polym er secondary battery. Overcharge, Overd ischarge, Charge Overcurrent and Discha rge Overcurrent for 3 to 5 serial cells can be detected. By cascade connection using the R5436T,.
Manufacture

RICOH

Datasheet
Download R5436T508BA Datasheet


RICOH R5436T508BA

R5436T508BA; it is also possible to protect 6-serial or more cells rechargeable battery pac k. The R5436T provides a cell-balancing function to equalize imbalance between cells, and it provides an open-wire de tection to detect a broken wire between a battery and the circuit board. The o pen-wire detection is optionally select able. FEATURES  High Voltage Toleran t Process Absolute M.


RICOH R5436T508BA

aximum Ratings ············ ··················· ······30 V  Low Supply Current Normal operation with using 5 cells · ··················· ······Typ. 12.0 µA Standby ·· ··················· ··················· ··················· ·Typ. 6.0 µA  High-accuracy Voltage Detection Overcharge detection voltage (VDET1n(1)) ·····················3.6 V to 4.5 V (in 5 mV steps) Overch.


RICOH R5436T508BA

arge detection voltage accuracy···· ·················± 0 .025 V (Ta = 25°C) Overdischarge detec tion voltage (VDET2n(1)) ······· ··········2.0 V to 3.2 V (in 5 mV steps) Overdischarge detection vol tage accuracy ············ ·····± 2.5% Discharge overcurren t detection voltage1 (VDET31) (2) ·· ··0.05 V to 0.25 V (in 10 mV steps) Discharge overcurrent detection voltage accu.

Part

R5436T508BA

Description

3 to 5 Serial Cell Li-Ion or Li-Polymer Battery Protection



Feature


R5436T Series 3 to 5 Serial Cell Li-Ion or Li-Polymer Battery Protection IC NO. EA-322-191206 OUTLINE The R5436T is an overcharge, overdischarge and overcurre nt protection IC for Li-ion or Li-polym er secondary battery. Overcharge, Overd ischarge, Charge Overcurrent and Discha rge Overcurrent for 3 to 5 serial cells can be detected. By cascade connection using the R5436T,.
Manufacture

RICOH

Datasheet
Download R5436T508BA Datasheet




 R5436T508BA
R5436T Series
3 to 5 Serial Cell Li-Ion or Li-Polymer Battery Protection IC
NO.EA-322-191206
OUTLINE
The R5436T is an overcharge, overdischarge and overcurrent protection IC for Li-ion or Li-polymer secondary
battery. Overcharge, Overdischarge, Charge Overcurrent and Discharge Overcurrent for 3 to 5 serial cells can
be detected. By cascade connection using the R5436T, it is also possible to protect 6-serial or more cells
rechargeable battery pack. The R5436T provides a cell-balancing function to equalize imbalance between
cells, and it provides an open-wire detection to detect a broken wire between a battery and the circuit board.
The open-wire detection is optionally selectable.
FEATURES
High Voltage Tolerant Process
Absolute Maximum Ratings ······································30 V
Low Supply Current
Normal operation with using 5 cells ···························Typ. 12.0 µA
Standby ······························································Typ. 6.0 µA
High-accuracy Voltage Detection
Overcharge detection voltage (VDET1n(1)) ·····················3.6 V to 4.5 V (in 5 mV steps)
Overcharge detection voltage accuracy······················± 0.025 V (Ta = 25°C)
Overdischarge detection voltage (VDET2n(1)) ·················2.0 V to 3.2 V (in 5 mV steps)
Overdischarge detection voltage accuracy ··················± 2.5%
Discharge overcurrent detection voltage1 (VDET31) (2) ·····0.05 V to 0.25 V (in 10 mV steps)
Discharge overcurrent detection voltage accuracy ········± 20mV
Discharge overcurrent detection voltage2 ···················Three times VDET31
Short-circuit detection voltage(3)································0.25 V to 1.0 V (in 20 mV steps)
Charge overcurrent detection voltage ························-0.05 V / -0.1 V / -0.2 V
Charge overcurrent detection voltage accuracy············± 30 mV
Overcharge release voltage·····································VDET1n–0.1V to VDET1n–0.4V (in 10mV steps)
Overdischarge release voltage ·································VDET2n+0.0V to VDET2n+0.7V (in 50mV steps)
–provided, max.value is 3.2V.
Cell-balancing detection voltage (VCBDn(1)) ···················3.45V to 4.45V (in 5 mV steps)
Cell-balancing release voltage ·································VCBDn–0.0V to VCBDn–0.4V (in 10mV steps)
Each Detection DelayTime
Overcharge detection delay time ······························1.0 sec
Overdischarge detection delay time settable by external capacitor
Discharge overcurrent detection delay time 1/2 settable by external capacitor
Charge overcurrent detection delay time ····················8 ms
Short-circuit detection delay time ······························330 µs
Zero Voltage Charging··············································Available
(1) VDET1n, VCBDn : n =1, 2, 3, 4, 5
(2) Set to meet the following equation: (3×VDET31+0.05<0.8×VSHORT).
(3) VDET32 is not detected when VDET32 is higher than VSHORT.
1




 R5436T508BA
R5436T
NO.EA-322-191206
Overcharge Release Voltage Condition ············· Voltage release type
Overdischarge Release Voltage Condition ········· Latch type / Voltage release type
3 to 5 Cells Selectable Battery Protection
Delay Time Shortening Function
Selectable Broken-wire Detection ···················· Typ.1.25 s
External NTC temperature protection function
Package ····················································· TSSOP-28 (JEDEC: 173 MIL)
APPLICATIONS
Li-ion/Li-polymer battery protection for electric tool and electric bicycle, etc.
2




 R5436T508BA
SELECTION GUIDE
In the R5436T, the set voltage, the delay time, and the optional function can be designated.
R5436T
NO.EA-322-191206
Selection Guide
Product Name
R5436Txxx$-E2-FF
Package
TSSOP-28
Quantity per Reel
3,000 pcs
Pb Free
Yes
Halogen Free
Yes
xxx: Specify a combination of the following set output voltages. Refer to Product Code List for details.
VDET1n(1) : 3.6 V to 4.5 V in 5 mV steps
VREL1n(1) : VDET1n – 0.1 V to VDET1n – 0.4 V in 10 mV steps
VCBDn(1) : 3.45 V to 4.45 V in 5mV steps
VCBRn(1) : VCBDn – 0.0 V to VCBDn –0.4 V in 10 mV steps
VDET2n(1) : 2.0 V to 3.2 V in 5 mV steps
VREL2n(1) : VDET2n + 0.0 V to VDET2n + 0.7 V in 50 mV steps (Max. 3.2 V)
VDET31 : 0.05 V to 0.25 V in 10 mV steps
VDET32 : Fixed to three times VDET31
VSHORT : 0.25 V to 1.0 V in 20 mV steps
VDET4 : -0.05V (±30mV), -0.1V (±30mV), or -0.2V (±30mV)
: Specify a combination of the following each detection delay time.
Code tVDET1 (s)
tVDET2 (s)
tVDET31 (ms) tVDET32 (ms)
B
1.0
3.60×CCT1 (nF) 3.00×CCT2 (nF) tVDET31/6
tVDET4 (ms)
8
tSHORT (µs)
330
$: Specify a combination of the optional functions.
Code
Overcharge
Released Type
Overdischarge
Released Type
A Voltage Release
Latch
B Voltage Release Voltage Release
0 V Charging
Available
Available
Open-wire
Detection
Available
Unavailable
(1) VDET1n, VREL1nVCBDn, VCBRn, VDET2n, VREL2n : n =1, 2, 3, 4, 5
3






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