MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) PST75XX
Outline
This IC is used for double-protection of lithium-ion batteries with one cell. Some models can also be used for
pulse charging.
Features
1. Detection voltage accuracy (Ta=25C)
15 mV (PST7513, 7523) / 30 mV (PST7512, 7528)
2. Circuit current while on
30A typ.
3. Circuit current while off (Vcc at or below detection voltage)
4A typ.
4. Circuit current while off (Vcc=2.000V)
1A typ.
5. Output current while on
-100A max.
6. Delay time (Ctc=0.015F, R
L
=100k
)
200 ms typ.
Package
SOT-25 (Mini mold)
Applications
Pin Assignment
Block Diagram
IC for double-protection of lithium-ion batteries with one cell.
1
2
3
5
4
SOT-25
Protection of Lithium-Ion Batteries (for Double-Protect)
Monolithic IC PST75XX Series
MITSUMI
1
GND
2
SUB
3
TC
4
V
OUT
5
V
CC
Note 2 : The Pin 2 this product is SUB, so connect the pin to Ground.
MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) PST75XX
Absolute Maximum Ratings
(Ta=25C)
MITSUMI
Pin Description
Recommended Operating Conditions
Electrical Characteristics
(Except where noted otherwise, Ta=25C) Models listed PST7513
Pin No.
Pin Name
Functions
1
GND
GND pin
2
SUB
SUB pin
3
TC
Delay time establish pin
4
V
OUT
Reset signal output pin
5
V
CC
V
CC
pin / detection voltage pin
Item
Symbol
Ratings
Unit
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-25~+75
C
Supply voltage
V
CC
max.
-0.3~+12
V
Allowable loss
Pd
150
mW
Item
Symbol
Ratings
Unit
Operating temperature
T
OPR
-25~+75
C
Operating voltage
V
OP
0~+12
V
Item
Symbol
Measurement
Measurement conditions
Min. Typ. Max. Unit
circuit
Detection voltage
V
SD
1
V
CC
=L H R
L
=100k
4.120 4.135 4.150
V
Release voltage
V
SR
1
V
CC
=L H L R
L
=100k
4.100 4.125 4.145
V
Hysteresis voltage
Vs
Vs=V
SD
-V
SR
5
10
20
mV
Detection voltage
Vs/ T
1
R
L
=100k
Ta=-25~+75C
0.01
%/C
temperature coefficient
High-level output voltage
V
OH
1
V
CC
=4.20V R
L
=100k
3.800 4.150
V
Output leakage current
I
OL
1
V
CC
=4.020V
0.1
A
Circuit current at on time
I
CCH
1
V
CC
=4.200V R
L
=
30
50
A
Circuit current at off time 1
I
CCL
1
1
V
CC
=4.020V R
L
=
4
6
A
Circuit current at off time 2
I
CCL
2
1
V
CC
=2.000V R
L
=
1
1.5
A
Delay time
t
PLH
*
2
R
L
=100k
C
TC
=0.015F
140
200
260
ms
"L" transmission delay time
t
PHL
*
2
R
L
=100k
C
TC
=0.015F
1.1
3.5
ms
Output current at ON time
I
OH
1
V
CC
=4.200V R
L
=0
-100
A
Note : t
PLH
: V
CC
=3.870V 4.370V
t
PHL
: V
CC
=4.370V 3.870V
MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) PST75XX
MITSUMI
Measuring Circuit
(1)
(2)
A: DC Amperemeter
V: DC Voltmeter
CRT: Oscilloscope
Input Pulse
Vsd typ.+0.25V
0V
Vsr typ.-0.25V
MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) PST75XX
MITSUMI
Timing Chart
V
CC
Vsd
V
CC
TC
V
OUT
t
PLH
t
PLH
t
PLH
t
PLH
0.4V max.
Vs
Application Circuit
(1) Over charge detecting circuit (P-MOS FET control)
MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) PST75XX
(2) Over charge detecting circuit (N-MOS FET control)
Characteristics
0.0001
0.001
0.01
0.1
1
0.01
0.1
1
10
t
PLH
(s)
C
TC
(
F)
Delay time (t
PLH
) vs C
TC
characteristics
0.0001
0.001
0.01
0.1
1
0.1
1
10
100
t
PLH
(ms)
C
TC
(
F)
L transmission delay time (t
PHL
) vs
C
TC
characteristics
Delay time (t
PLH
)
.
=.13.33 C
TC
(s)
C
TC
: F
"L" Transmission delay time (t
PHL
)
.
=.73.35 10
-3
C
TC
(s)
C
TC
: F
Note: The above are representative, not guaranteed values.
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