LI-ION/POLYMER 1CELL PROTECTOR
1
NO. EA-090-0402
OUTLINE
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R5426xxxxx
2
FEATURES
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APPLICATIONS
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R5426xxxxx
3
BLOCK DIAGRAM
V
DD
DS
+
-
+
-
Oscillator Counter
+
-
+
-
Logic
Circuit
Level
Shift
Delay
Logic
Circuit
Short
Detector
V
SS
V-C
OUT
D
OUT
VD4
VD1
VD2
VD3
SELECTION GUIDE
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Code Contents
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R5426xxxxx
4
PIN CONFIGURATIONS
SOT-23-6 SON6
645
123
(mark side)
1
2
3
6
5
4
(mark side)
PIN DESCRIPTION
Pin No.
SOT-23-6 SON6
Symbol Description
88 4
-%% !+<-%%
3 C!!%
5
-%% !+<-%%
4 C% %%#*&
3
C.%#*+%"#!##
5 3
E%
R5426xxxxx
5
ABSOLUTE MAXIMUM RATINGS
VSS=0V
Symbol Item Ratings Unit
3 %#*#! 58 3
3
3
%3#!
3
4
3 =3(5
3 53(5
3
3
3
34
-%%#!
4
3 =3(5
3 53(5
3
3
CC. 8 &,
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! !&%! 8 ?
ABSOLUTE MAXIMUM RATINGS
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R5426xxxxx
6
ELECTRICAL CHARACTERISTICS Unless otherwise specified, Topt=25°C
Symbol
Item Conditions Min. Typ. Max. Unit
*Note 2
!!Ω
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%
%
%
%
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×
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(
%
×
%
×
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*+ ! )
'+
$#
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)
,
(
!
'+
! ) ( )
- ! ,
# .'- !! ( /
*+
! ! 0Ω
.-121 3!
.-11 ! (
.-4 ! ! ( Ω
55% 6/7
85% 6/7!9 ! !)
55. 6/7( (
85. 6/7!9 ! !)
6 -' !9 ! /7
6-:' ( /7
*Note1: Specified for A version
*Note2: Specified for B version
*Note3: We compensate for this characteristic related to temperature by laser-trim, however, this specification is guaranteed by design,
not production tested.
R5426xxxxx
7
OPERATION
• VD1 / Over-Charge Detector
348&3#!.#!"*2,3#! !
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• VD2 / Over-Discharge Detector
34 &! 3#!,3
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R5426xxxxx
8
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• VD3 /Excess discharge-current Detector, Short Circuit Protector
7 % %.2 . " #:
0-0
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• VD4/ Excess charge-current detector
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R5426xxxxx
9
• DS (Delay Shorten) function
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R5426xxxxx
10
TIMING CHART
1. Over-charge, Excess charge Current Operation
Connect
Charger
Connect
Charger
Connect
Load
Excess
Charge
Current
Connect
Load
Disconnect
Charger
+Connect Load
Charge/
Discharge
Current
Charge
Current
Discharge
Current
C
OUT
V
DD
V
-
VSS
VDD
VDD
VDET1
VDET3
V
-
VDET4
0
t
t
t
t
tV
REL1
tV
REL4
tV
DET4
tV
DET1
tV
DET1
tV
REL1
R5426xxxxx
11
2. Over discharge, Excess discharge current, Short circuit operation
Connect
Charger Connect
ChargerConnect Load Connect Load
Excess
Discharge
Current Short
Open Open
Charge/
Discharge
Current
Charge
Current
Discharge
Current
0
D
OUT
VDD
V
-
VSS
VSS
VDD
VDD
VDET2
VDET3
Vshort
VDET4
t
t
t
t
tVREL2 tVREL2 tVREL3
tVDET2 tVDET2 tVDET3
tVREL3
tshort
R5426xxxxx
12
TYPICAL APPLICATION
DSVDD
R5426
DOUT COUTVSS
V-
–
+
0.1µF
C1
R1 330Ω
R2 1kΩ
APPLICATION HINTS
88.##"#H%#*#!/&&8#%#82Ω
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-+#!#%+#& ! "*!!&!"
"#&&#%G%##52Ω
R5426xxxxx
13
TEST CIRCUITS
V
DD
V
SS
V-
D
OUT
C
OUT
OSCILLOSCOPE
V
V
V
DD
V
SS
V- C
OUT
V
AB
VDD
VSS
V- COUT
V
DD
V
SS
V- D
OUT
V
CD
VDD
VSS
V- DOUT
V
DD
V
SS
V- D
OUT
V
A
EF
V
DD
V
SS
V- C
OUT
V
V
DD
V
SS
V-
D
OUT
A
V
DS
GH
VDD
VSS
V-
V
A
COUT
VDD
VSS
V-
COUT A
V
IJ
R5426xxxxx
14
V
DD
V
SS
V- D
OUT
V
A
V
DD
V
SS
V-
D
OUT
A
V
KL
VDD
VSS
V-
A
M
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R5426xxxxx
15
TYPICAL CHARACTERISTICS (Part 1)
1) Minimum Operating Voltage for 0V Cell Charging 2) Maximum Battery Voltage Level for Low Voltage
vs. Temperature Battery Charge Inhibitory Circuit vs. Temperature
R5426x102CA R5426x104BB
2
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
Temperature Topt(°C)
Minimum Operating Voltage for 0V
Charging Vst(V)
-60 1000 20-40 -20 40 60 80
1.8
V
DD-
V
SS
=0V
2
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
Temperature Topt(°C)
Maximum Battey Voltage Level for
Low Voltage Battery Charge Inhibitory
Circuit Vnochg(V)
-60 1000 20-40 -20 40 60 80
1.8
VDD-V-=4V
3) Over-Charge Threshold vs. Temperature 4) Output Delay of Over-charge vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Over-charge Threshold VDET1(V)
4.37
4.31
4.32
4.33
4.34
4.35
4.30
4.36
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Output Delay Over-charge
tV
DET1
(s)
1.8
0.2
0.6
0.8
1
1.2
0
1.4
0.4
1.6
-60 1000 20-40 -20 40 60 80
5) Output Delay of Release from Over-charge vs. 6) Over discharge Threshold vs. Temperature
Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Output Delay of Release from
Over-charge tV
RET1
(ms)
30
10
15
20
0
-60 100
-40 -20 0 20 60 8040
5
25
Temperature Topt(°C)
Over-discharge Threshold V
DET2
(V)
2.53
2.48
2.49
2.51
2.46
2.47
2.50
2.52
-60 1000 20-40 -20 40 60 80
R5426xxxxx
16
7) Output Delay of Over-discharge vs. Temperature 8) Output Delay of Release from Over-discharge vs.
Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Output Delay Over-discharge
tVDET2(ms)
35
10
15
25
0
5
20
30
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Output Delay of Release from
Over-discharge tV
RET2
(ms)
1.8
0.2
0.6
0.8
1
1.2
0
-60 100
200-40 -20 40 60 80
1.4
0.4
1.6
9) Excess Discharge-current Threshold vs. 10) Output Delay of Excess Discharge-current vs.
Temperature Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Excess Discharge-current
Threshold V
DET3
(V)
0.210
0.200
0.190
-60 100
200-40 -20 40 60 80
0.205
0.195
Temperature Topt(°C)
Output Delay of Excess
Discharge-current tV
DET3
(ms)
18
2
6
8
10
12
0
-60 100
200-40 -20 40 60 80
14
4
16
11) Output Delay of Release from Excess Dicharge- 12) Short Protection Voltage vs. Temperature
current vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Output Delay of Release from Excess
Discharge-current tVDET3(ms)
1.8
0.2
0.6
0.8
1.0
1.2
0
-60 100
200-40 -20 40 60 80
1.4
0.4
1.6
Temperature Topt(°C)
Short Protection Voltage Vshort(V)
2.20
1.95
2.00
2.10
1.80
1.90
1.85
2.05
2.15
V
DD
=3.0V
-60 1000 20-40 -20 40 60 80
R5426xxxxx
17
13) Output Delay of Short Protection vs. Temperature 14) Reset Resistance for Excess Discharge
current Protection vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Output Delay of Short Protection
tshort(µs)
700
200
300
500
0
100
400
600
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Reset Resistance for Excess
Discharge-current Protection Rshort(Ω)
50
20
30
0
-60 100
200-40 -20 40 60 80
40
10
V
DD
=3.6V
15) Excess Charge-current Threshold vs. 16) Output Delay of Excess Charge-current vs.
Temperature Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Excess Charge-current Threshold
V
DET4
(V)
-60 100020-40 -20 40 60 80
-0.110
-0.095
-0.100
-0.105
-0.090
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Output Delay of Excess
Charge-current tVDET4(ms)
30
10
15
0
-60 100
200-40 -20 40 60 80
20
5
25
17) Output Delay of Release from Excess 18) DS pin “H” Input Minimum
Charge-current vs. Temperature Voltage vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Output Delay of Release from Excess
Charge-current tVDET4(ms)
1.8
0.2
0.6
0.8
1.0
1.2
0
-60 100
200-40 -20 40 60 80
1.4
0.4
1.6
Temperature Topt(°C)
DS pin "H" Input Minimum Voltage
V
IH
(V)
3.0
0.5
1.0
2.0
0
1.5
2.5
VDD=3V
-60 1000 20-40 -20 40 60 80
R5426xxxxx
18
19) DS pin “M” Input Minimum Voltage vs. 20) DS pin Pull-down Resistance vs. Temperature
Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
DS pin "M" Input Minimum Voltage
V
IM
(V)
3.0
0.5
1.0
2.0
0
1.5
2.5
VDD=3.6V to 4.4V
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
DS pin Pull-down Resistance
Rds(MΩ)
2.5
1.0
1.5
2.0
0
0.5
VDD=3.6V
-60 1000 20-40 -20 40 60 80
21) Nch ON Voltage of COUT vs. Temperature 22) Pch ON Voltage of COUT vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Nch ON Voltage of COUT VOL1(V)
0.5
0.2
0.3
0.4
0
0.1
I
OL
=50µA, V
DD
=4.5V
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Pch ON Voltage of C
OUT
V
OL1
(V)
3.9
3.6
3.7
3.5
-60 100
200-40 -20 40 60 80
3.8
IOH=-50µA, VDD=3.9V
23) Nch ON Voltage of DOUT vs. Temperature 24) Pch ON Voltage of DOUT vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Nch ON Voltage of D
OUT
V
OL2
(V)
0.4
0.1
0.2
0.3
0
IOL=50µA, VDD=2.0V
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Pch ON Voltage of D
OUT
V
OH2
(V)
3.9
3.6
3.7
3.8
3.5
IOH=-50µA, VDD=3.9V
-60 1000 20-40 -20 40 60 80
R5426xxxxx
19
25) Supply Current vs. Temperature 26) Standby Current vs. Temperature
R5426x102CA R5426x102CA
Temperature Topt(°C)
Supply Current IDD(µA)
6
1
2
4
0
3
5
V
DD
=3.9V, V-=0V
-60 1000 20-40 -20 40 60 80
Temperature Topt(°C)
Standby Current IS(µA)
0.10
0.04
0.06
0.08
0
0.02
VDD=2.0V
-60 1000 20-40 -20 40 60 80
R5426xxxxx
20
Part 2 Delay Time dependence on VDD
1) Delay Time for Over-charge detect vs. VDD 2) Delay Time for Release from Over-charge vs. VDD
R5426x113CA R5426x113CA
1.2
0.4
0.6
0.8
0
V
DD
(V)
4.0 6.04.5 5.0 5.5
0.2
1
Output Delay of Over-charge
tV
DET1
(s)
V-=0V, VDD=3.6V to 4.4V, 5.0V, 5.6V
18
2
6
8
10
12
0
V
DD
(V)
Output Delay of Release from
Over-charge tV
REL1
(ms)
3.0 4.53.5 4.0
14
4
16
V
DD
=3.2V, 3.7V, 4.2V, V-=0V to 1V
3) Output Delay of Over-discharge detect vs. VDD 4) Output Delay for Release from
Over-discharge vs. VDD
R5426x113CA R5426x113CA
22
2
6
12
14
0
V
DD
(V)
Output Delay of Over-discharge
tV
DET2
(ms)
1.0 2.51.5 2.0
18
8
4
10
16
20
V-=0V, V
DD
=3.6V to 2.2V, 2.0V, 1.5V 1.4
0.4
0.6
1
0
V
DD
(V)
Output Delay of Release form
Over-discharge tV
REL2
(ms)
2.0 4.52.5 3.0 3.5 4.0
0.2
0.8
1.2
V-=0V, V
DD
=2.2V to 2.4V, 3.3V, 4.2V
5) Output Delay for Excess Current during 6) Output Delay for Release from Excess Discharge
Discharge vs. VDD Current Detect vs. VDD
R5426x113CA R5426x113CA
14
4
6
10
0
V
DD
(V)
Output Delay of Excess
Discharge-current tV
DET3
(ms)
2.0 4.52.5 3.0 3.5 4.0
2
8
12
VDD=2.4V, 3.3V, 4.2V, V-=0V to 1V
1.4
0.4
0.6
1
0
V
DD
(V)
Output Delay of release from
Excess Discharge-current tV
REL3
(ms)
2.0 4.52.5 3.0 3.5 4.0
0.2
0.8
1.2
V
DD
=2.4V, 3.3V, 4.2V,
V-=2.4V, 3.3V, 4.2V to 0V
R5426xxxxx
21
7) Delay Time for Excess Charge Current Detect 8) Delay Time for release from Excess charge
vs. VDD current detect vs. VDD
R5426x103CA R5426x103CA
18
2
6
8
10
12
0
2.0 4.5
2.5 3.0 3.5 4.0
14
4
16
V
DD
(V)
Output Delay of Excess
Charge-current tV
DET4
(ms)
V
DD
=2.4V, 3.3V, 4.2V, V-=0V to -1V 1.4
0.4
0.6
1
0
2.0 4.5
3.02.5 4.03.5
0.2
0.8
1.2
V
DD
(V)
Output Delay of Release from Excess
Charge-current tV
REL4
(ms)
V
DD
=2.4V, 3.3V, 4.2V, V-=-1V to 0V
9) Output Delay for Short vs. VDD
R5426x103CA
700
200
300
500
0
2 4.5
32.5 43.5
100
400
600
VDD(V)
Output Delay of short Protection tshort(µs)
VDD=2.4V, 3.3V, 4.2V,
V-=0V to 2.4V, 3.3V, 4.2V
R5426xxxxx
22
Part 3 Supply Current dependence on VDD
Test Circuit
DSV
DD
D
OUT
C
OUT
V
SS
V-
R5426N113CA
–
+
0.1µF
C1
R1 330Ω
R2 1kΩ
A
Si9926
Supply Current vs. VDD
VDD(V)
001 2 3 45
5
4
1
2
3
Supply Current IDD(µA)
R5426xxxxx
23
Part 4 Over-charge detector, Release voltage from Over-charge, Over-discharge detector, Release voltage
from Over-discharge dependence on External Resistance value
Test Circuit
DSV
DD
D
OUT
C
OUT
V
SS
V-
R5426N113CA
–
+
0.1µF
C1
R1
R2 1kΩ
Si9926
Over-discharge Detector Threshold / Released Voltage from Over-discharge vs. R1
R1(Ω)
2.316 0 100 200 300 400 500 600 700 800 900 1000
2.327
2.326
2.325
2.324
2.323
2.322
2.321
2.32
2.319
2.318
2.317
Over-discharge Threshold & Release
Threshold from Over-discharge(V)
Over-discharge Threshold
Release Threshold from
Over-discharge
Over-charge / Released from Over-charge Threshold vs. R1
R1(Ω)
4.288 0 100 200 300 400 500 600 700 800 900 1000
4.294
4.293
4.292
4.291
4.29
4.289
Over-charge Threshold & Release
Threshold from Over-charge(V)
Over-charge Threshold
Release Threshold from
Over-charge
R5426xxxxx
24
Part 5 Charger Voltage at Released from Over-discharge with a Charger dependence on R2
Test Circuit
DSVDD
DOUT COUTVSS
V-
0.1µF
C1
R1
R2
Si9926
330Ω
4.25V
R5426N113CA
Charger Voltage at Release from Over-discharge with a charger vs. R2
R2(kΩ)
V
DD
=4.25V
050
100 150 200 250 300
2.5
2
1.5
1
0.5
0
Charger Voltage of Release
from Over-discharge(V)
