R5460x2xx SERIES
Li-ION/POLYMER 2-CELL PROTECTOR
NO.EA-165-160603
OUTLINE
The R5460x2xxxx Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell
Lithium-ion (Li+) / Lithium polymer, further include a short circuit protection circuit for preventing large external short circuit
current and the protection circuits against the excess discharge-current and excess charge current.
Each of these ICs is composed of six voltage detectors, a reference unit, a delay circuit, a short circuit protector, an oscillator,
a counter, and a logic circuit. When the over-charge voltage threshold or excess-charge current threshold crosses the each
detector threshold from a low value to a high value, the output of C
OUT
pin switches to “L” level after internal fixed delay time.
To release over-charge detector after detecting over-charge, the detector can be reset and the output of C
OUT
becomes "H"
when a kind of load is connected to V
DD
after a charger is disconnected from the battery pack and the cell voltage becomes
lower than over-charge detector threshold. In case that a charger is continuously connected to the battery pack, if the cell
voltage becomes lower than the over-charge released voltage, over-charge state is also released.
The output of D
OUT
pin, the output of the over-discharge detector and the excess discharge-current detector, switches to “L”
level after internally fixed delay time, when discharged voltage crosses the detector threshold from a high value to a value
lower than V
DET2
.
The conditions to release over-discharge voltage detector after detecting over-discharge voltage are as follows:
A/D versions: after connecting a charger, when the cell voltage becomes higher than over-discharge detector threshold or,
without connecting charger, when the cell voltage becomes equal or higher than over-discharge released voltage.
C version: after connecting a charger, when the cell voltage becomes higher than over-discharge detector threshold voltage.
E version: whether connecting a charger, or not, when the cell voltage becomes higher than released voltage from over-
discharge.
F version: after connecting a charger, when the cell voltage becomes higher than released voltage from over-discharge.
In case that connecting a charger, for A/C/D versions, there is no hysteresis for over-discharge detector. E/F versions, even if
a charger is connected to the battery pack, the hysteresis of over-discharge detector exists.
To satisfy the release conditions for over-discharge voltage protector, the output voltage of D
OUT
becomes "H".
Even if a battery is discharged to 0V, charge current is acceptable.
After detecting excess-discharge current or short current, when the load is disconnected, the excess discharged or short
condition is released and D
OUT
becomes “H”.
After detecting over-discharge voltage, supply current will be kept extremely low by halting internal circuits' operation.
When the output of C
OUT
is “H”, if V- pin level is set at -1.6V, the delay time of over-charge and over-discharge detector can be
shortened. Especially, the delay time of the over-charge detector can be reduced into approximately 1/60 and test time for
protection circuit PCB can be reduced. The output type of C
OUT
and D
OUT
is CMOS.
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R5460x2xx
NO.EA-165-160603
FEATURES
Manufactured with High Voltage Tolerant Process................... Absolute Maximum Rating
Low supply current ................................................... Supply current (At normal mode)
Standby current
High accuracy detector threshold ............................. Over-charge detector
30V
Typ. 4.0µA
Typ. 1.2µA (A/ D/ E version)
Max. 0.1A (C/ F version)
(Ta=25°C)
(Ta=-5 to 55°C)
Over-discharge detector
Excess discharge-current detector
Excess charge-current detector
Variety of detector threshold
Over-charge detector threshold (A/C/E/F version)
Over-charge detector threshold (D version)
Over-discharge detector threshold
Excess discharge-current threshold
4.1V-4.5V step of 0.005V (V
D1U
/V
D1L
)
3.5V-4.0V step of 0.005V (V
D1U
/V
D1L
)
2.0V-3.0V step of 0.005V (V
D2U
/V
D2L
)
0.05V-0.20V step of 0.005V
±25mV
±30mV
±2.5%
±15mV
±40mV
3 options of Excess charge-current threshold
(1) -0.4V
40mV
(2) -0.2V
30mV
(3) -0.1V
30mV
Over-charge released voltage
Over-discharge released voltage
0.1V-0.4V step of 0.05V (V
H1U
/V
H1L
)
0.2V-0.7V step of 0.1V (V
H2U
/V
H2L
)
1.0s
128ms
12ms
8ms
300µs
Internal fixed Output delay time ............................... Over-charge detector Output Delay
Over-discharge detector Output Delay
Excess discharge-current detector Output Delay
Excess charge-current detector Output Delay
Short Circuit detector Output Delay
Output Delay Time Shortening Function.................. At C
OUT
is “H”, if V- level is set at –1.6V, the Output Delay time of detect
the over-charge and over-discharge can be reduced. (Delay Time for
over-charge becomes about 1/60 of normal state.)
0V-battery charge ..................................................... acceptable
Ultra Small package ................................................. SOT-23-6, DFN(PLP)1820-6
APPLICATIONS
Li+ / Li Polymer protector of over-charge, over-discharge, excess-current for battery pack
High precision protectors for cell-phones and any other gadgets using on board Li+ / Li Polymer battery
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R5460x2xx
NO.EA-165-160603
BLOCK DIAGRAMS
A/D/E/F version
V
DD
DS Circuit
VD1U
Ｏscillator
Counter
Logic
Circuit
Level
Shift
Short
Detector
VD2U
V
c
VD4
VD1L
Delay
Logic
Circuit
VD2L
VD3
D
OUT
C
OUT
V
SS
C version
V-
V
DD
DS Circuit
VD1U
Ｏscillator
Counter
Level
Shift
Short
Detector
Logic
Circuit
VD2U
V
c
VD4
VD1L
Delay
Logic
Circuit
VD2L
VD3
D
OUT
C
OUT
V
SS
V-
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R5460x2xx
NO.EA-165-160603
SELECTION GUIDE
In the R5460x2xxxx Series, input threshold of over-charge, over-discharge, excess discharge current, and the package and
taping can be designated.
Part Number is designated as follows:
R5460x2xxxx-xx
Part
Number
a b cd e
Code
a
b
c
d
e
Package Type
N: SOT-23-6
Contents
K: DFN(PLP)1820-6
Serial Number for the R5460 Series designating input threshold for over-charge, over-discharge,
excess discharge-current detectors.
Designation of Output delay option of over-charge and excess discharge-current.
Designation of version symbols.
Taping Type: TR (refer to Taping Specification)
PIN CONFIGURATIONS
SOT-23-6
6
5
4
DFN(PLP)1820-6
6
5
4
mark side
mark side
1
2
3
1
2
3
4
R5460x2xx
NO.EA-165-160603
PIN DESCRIPTION
Pin No.
Symbol
SOT-23-6
1
2
3
4
5
6
PLP1820-6
3
1
2
6
5
4
D
OUT
C
OUT
V-
VC
V
DD
V
SS
Output pin of over-discharge detection, CMOS output
Output pin of over-charge detection, CMOS output
Charger negative Input Pin
Input Pin of the center voltage between two-cell
Power supply pin, the substrate voltage level of the IC.
V
SS
pin. Ground pin for the IC
Description
The backside tab of DFN(PLP)1820-6 package is connected to the substrate level. (V
DD
) Note that avoiding
short with other level.
ABSOLUTE MAXIMUM RATINGS
Ta=25C, Vss=0V
Item
Supply Voltage
Input Voltage
Middle pin Voltage between 2-cell
V- pin Voltage
Output Voltage
C
OUT
pin Voltage
D
OUT
pin Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
Ratings
-0.3
to 12
Unit
V
V
V
V
V
mW
85
125
C
C
V
DD
Vc
V-
V
C
OUT
V
D
OUT
P
D
Ta
Tstg
Vss-0.3 to V
DD
+0.3
V
DD
-30 to V
DD
+0.3
V
DD
-30 to V
DD
+0.3
Vss-0.3 to V
DD
+0.3
150
-40
-55
to
to
*Note: Exposure to the condition exceeded Absolute Maximum Ratings may cause the permanent
damages and affects the reliability and safety of both device and systems using the device.
The functional operations cannot be guaranteed beyond specified values in the recommended
conditions.
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