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R5432V Schematic ( PDF Datasheet ) - RICOH

Teilenummer R5432V
Beschreibung 3 to 5 Cells Li-ion Battery Protector IC
Hersteller RICOH
Logo RICOH Logo 




Gesamt 30 Seiten
R5432V Datasheet, Funktion
R5432V SERIES
3 to 5 Cells Li-ion Battery Protector IC
NO.EA-263-1600711
OUTLINE
The R5432V is a high voltage CMOS-based protection IC for overcharge /discharge of rechargeable three-cell / four-cell / five-
cell Lithium-ion / Lithium- polymer battery, further include a short circuit and the protection circuits against the excess discharge
current and excess charge current.
Each of these ICs is composed of eighteen voltage detectors (fourteen for 3cell protection type, sixteen for 4cell protection
type), a reference circuit, a delay circuit, a short detector circuit, an oscillator, a counter and a logic circuit.
The output of COUT is P-channel open-drain type, and DOUT is CMOS type.
If the overcharge voltage or overcharge current is detected by the R5432V, after the preset output delay time, the output of
COUT becomes Hi-Z.
While the overdischarge voltage or current is detected, after the preset output delay time, the output of DOUT becomes ”L”.
After detecting overcharge voltage, when the cell voltage returns lower than the overcharge released voltage, then overcharge
is released and the output of COUT becomes “H”. After detecting overcharge current, by disconnecting a charger and
connecting a load, then overcharge current is released and the output of COUT becomes “H”.
After detecting overdischarge voltage, when the cell voltage becomes the released voltage from overdischarge or more,
then overdischarge is released and the output of DOUT becomes “H”. After detecting overdischarge current and short circuit,
by disconnecting the load, the function of the output of DRAIN pin, the external NMOSFET turns on, and VMP pin voltage is
pulled down by the resistance connected to GND and released overdischarge current or short and the output of DOUT becomes
“H”.
By forcing a certain voltage to SEL1 and SEL2 pins, the testing time of protection circuits can be short. Specifically,
overcharge, discharge, over current delay time can be shortening into approximately 1/80.
The R5432V can protect 6-cell or more by connecting 2 pieces of the R5432V in cascade. High side IC’s COUT and
DOUT must connect to CTLC and CTLD respectively of the low side IC. As a result, the signal of the high side of COUT and
DOUT is transmit to the lower side IC, and control FETs for charge and discharge.
The R5432V has cell-balance function to solve the unbalance condition of serially connected cells. If cell voltage is
beyond the cell balance detector threshold, by the output of the cell balance control pin, the external NMOSFET turns on, and
a current path is made, and during charge, charge current is bypassed, otherwise, cell is discharged until the cell voltage
becomes the released voltage from cell-balance operation.
If the connection between a cell and a protection board is broken, the open-wire condition is detected by the R5432V, and the
output of COUT becomes Hi-Z. After detecting the open-wire, when the cell and the protection board is connected again, the
open-wire detector is released and the output of COUT becomes “H”.
FEATURES
Absolute Maximum Rating ............................................... 30V
Supply Current ................................................................. Typ. 12.0µA
Detector thresholds range and accuracy
Overcharge detector threshold......................................... 3.6V to 4.5V (5mV step) (n=1, 2, 3, 4, 5) (±25mV)
Overdischarge detector threshold .................................... 2.0V to 3.0V (5mVstep) (n=1, 2, 3, 4, 5) (±2.5%)
Excess discharge current threshold 1 .............................. 0.1V to 0.3V (10mVstep) (±20mV) for BA/BB/BC ver.
0.1V to 0.2V (10mV step) (±20mV) for AD/BD ver.
Excess discharge current threshold 2 .............................. 0.45V/0.60V for BA ver.
0.25V to 0.40V for BB/BC ver.
0.25V/0.3V(Vdet3-1+0.1V or more) for AD/BD ver.
1






R5432V Datasheet, Funktion
R5432V
NO.EA-263-160711
PIN DESCRIPTIONS
SSOP-24
24 2322 2120 1918 171615 1413
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
6
1 2 3 4 5 6 7 8 9 10 11 12
Symbol
CTLC
CTLD
COUT
VMP
DRAIN
DOUT
SENS
CTLT
VSS
CT1
CT2
SEL1
SEL2
CB5
VC5
CB4
VC4
CB3
VC3
CB2
VC2
CB1
VC1
VDD
Pin Description
COUT control pin
DOUT control pin
Output pin of overcharge detection, Pch OPEN DRAIN output
Pin for charger negative input
Release from Excess discharge-current threshold Pin
Output pin of overdischarge detection,CMOS output
Current sense pin
Disconnection detection movement interval setting capacitance pin
VSS pin. Ground pin for the IC
tVDET2 setting capacitance connection pin
tVDET3 setting capacitance connection pin
3cell/4cell/5cell alternative pin1
3cell/4cell/5cell alternative pin2
CELL5 Cell balance Control pin
Positive terminal pin for Cell5
CELL4 Cell balance Control pin
Positive terminal pin for Cell4
CELL3 Cell balance Control pin
Positive terminal pin for Cell3
CELL2 Cell balance Control pin
Positive terminal pin for Cell2
CELL1 Cell balance Control pin
Positive terminal pin for Cell1
VDD pin

6 Page









R5432V pdf, datenblatt
R5432V
NO.EA-263-160711
Symbol
Items
Vshort Short protection voltage
tshort Output Delay of Short protection
VDET4
Excess charge-current
threshold
tVDET4
tVrel4
VIH1
Output delay of Excess
charge-current threshold
Output delay of release from
Excess charge-current
threshold
SEL1 pin “H” input voltage
VIM1 SEL1 pin “M” input voltage
VIL1 SEL1 pin “L” input voltage
VIH2 SEL2 pin “H” input voltage
VIM2 SEL2 pin “M” input voltage
VIL2 SEL2 pin “L” input voltage
CTLC1H CTLC pin “H1” input voltage
CTLC2H CTLC pin “H2” input voltage
CTLC1L CTLC pin “L” input voltage
CTLD1H CTLD pin “H1” input voltage
CTLD2H CTLD pin “H2” input voltage
CTLD1L CTLD pin “L” input voltage
VOL2 DOUT Nch ON voltage
VOL3 DRAIN Nch ON voltage
VOL4 CB1 Nch ON voltage
VOL5 CB2 Nch ON voltage
VOL6 CB3 Nch ON voltage
VOL7 CB4 Nch ON voltage
VOL8 CB5 Nch ON voltage
VOH1 COUT Pch ON voltage
12
Conditions
VDD=VC1, VCELLn=3.5V
(n=1,2,3,4,5), VMP=4.0V
Detect rising of supply voltage
VDD=VC1, VCELLn =3.5V
(n=1,2,3,4,5)
SENS=0.0V2.0V,VMP=4.0V
VDD=VC1, VCELLn=3.5V
(n=1,2,3,4,5), VMP=-1.0V
Detect falling edge of supply voltage
VDD=VC1, VCELLn =3.5V
(n=1,2,3,4,5)
SENS=0.0V→-1.0V
VDD=VC1, VCELLn =3.5V
(n=1,2,3,4,5)
SENS=VSS,VMP=-1.0V→1.0V
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
VDD=VC1, VCELLn =3.2V
(n=1,2,3,4,5)
IOL=50μA, VDD=VC1, CTLD=VDD
VCELLn =3.2V (n=1,2,3,4,5)
IOL=50μA, VDD=VC1,
VCELLn =3.2V (n=1,2,3,4,5)
IOL=50μA, VDD=VC1,
VCELLn=3.2V (n=1,2,3,4,5)
IOL=50μA, VDD=VC1,
VCELLn=3.2V (n=1,2,3,4,5)
IOL=50μA, VDD=VC1,
VCELLn=3.2V (n=1,2,3,4,5)
IOL=50μA, VDD=VC1,
VCELLn=3.2V (n=1,2,3,4,5)
IOL=50μA, VDD=VC1,
VCELLn=3.2V (n=1,2,3,4,5)
IOH=-50μA, VDD=VC1,
VCELLn =3.2V (n=1,2,3,4,5)
CTLC=VSS
Min.
0.7
180
VDET4
-0.030
5
0.7
VDD
-0.3
4.0
VSS
-0.3
VDD
-0.3
4.0
VSS
-0.3
VDD
+2.0
VDD
-0.3
VSS
-0.3
VDD
+2.0
VDD
-0.3
VSS
-0.3
VDD-0.5
Typ.
1.0
300
VDET4
8
1.2
0.1
0.1
VC2
+0.2
VC3
+0.2
VC4
+0.2
VC5
+0.2
0.2
VDD-0.1
Max.
1.7
550
VDET4
+0.030
11
1.7
VDD
+0.3
VDD/2
-0.5V
VSS
+1.0
VDD
+0.3
VDD/2
-0.5V
VSS
+0.3
VDD
+0.3
VSS
+0.3
VDD
+0.3
VSS
+0.3
0.5
0.5
VC2
+0.5
VC3
+0.5
VC4
+0.5
VC5
+0.5
0.5
Unit
V
μs
V
ms
ms
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Circuit
K
K
L
L
L
M
M
M
N
N
N
O
O
O
P
P
P
Q
R
S
S
S
S
S
T

12 Page





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