參數(shù)資料
型號(hào)： Si9731
廠商： Vishay Intertechnology,Inc.
英文描述： μP Controlled Battery Charger For 1-Cell Li-ion or 1-Cell to 3-Cell NiCd/NiMH Batteries(用于1節(jié)鋰電池或1-3節(jié)鎳氫/鎳鎘電池的μP控制的電池充電器)
中文描述： 微處理器控制的電池充電器1節(jié)鋰離子電池或1節(jié)至3節(jié)鎳鎘/鎳氫電池（用于1節(jié)鋰電池或1-3節(jié)鎳氫/鎳鎘電池的微處理器控制的電池充電器）
文件頁(yè)數(shù)： 2/9頁(yè)
文件大小： 57K
代理商： SI9731
Si9731
Vishay Siliconix
www.vishay.com
2
Document Number: 71321
S-02258
—
Rev. A, 28-Sep-00
Voltages Referenced to GND = 0 V
V
CHARGER
, V
(CVMODE)
, V
(TRICKLECHARGEEN)
, V
(MAINCHARGEREN)
, V
(ON/OFF)
,
V
(4.1 V_TAP)
, V
(VBAT+)
, V
(CHARGERPOWER_ON)
, V
(CHARGERPRESENT)
,
V
(TRICKLE_VBAT)
V
(CHARGERPRESENTIN)
, V
(CHARGERPOWER_ONIN)
Maximum Input Current (I
CHARGER(max)
)
Maximum Sink Current
CHARGERPOWER_ON and CHARGERPRESENT Pins
–
0.3 V to +13.5 V
. . . . . . . . .
1.2 A
. . . . . . . . . . . . . . . . . . . . . . . . .
5 mA
. . . . . . . . . . .
Storage Temperature
Operating Junction Temperature
Power Dissipation (Package)
a
16-Pin TSSOP (Q Suffix)
b
Thermal Impedance (
16-Pin TSSOP
Notes
a.
Device mounted with all leads soldered or welded to PC board.
b.
Derate 10 mW/ C above 25 C.
–
65 to 150 C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
150 C
1.25 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JA
)
100 C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Voltages Referenced to GND = 0 V
V
CHARGER
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient Temperature
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
REF
Bypass Capacitor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.0 V to 12 V
–
40 C to +85 C
0.1 F
C
OUT
C
IN
See application drawing Figure 1.
2.2 F
2.2 F
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Conditions Unless Specified
Parameter
Symbol
–
40 C
V
CHARGER
T
6.5 V, V
ON/OFF
= 1.5 V
+85 C
3.0 V
Min
a
Typ
b
Max
a
Unit
External Charger Voltage
V
CHARGER
V
UVLO
UVLO
HYST
3.0
12
Under Voltage Lockout on Charger
Rising Edge of Battery Charger
2.45
2.6
2.75
V
UVLO Hysteresis
70
90
110
mV
Regulated Output Voltage 4.1 V_TAP to
V
BAT
V
CHARGER
MAINCHARGEREN
= 5.0 V
CVMODE = 5.0 V
= 5.0 V
–
10 C
T
A
T
A
T
A
T
A
+40 C
4.050
4.1
4.150
–
40 C
+85 C
4.025
4.1
4.150
V
TERM+
–
10 C
+40 C
4.150
4.2
4.250
Regulated Output Voltage 4.1 V_TAP Open
–
40 C
+85 C
4.125
4.2
4.250
Battery Over Voltage Protection
V
OVP
V
OVP_HYS
V
BAT(min)
Rising Edge of V
BAT+
4.70
4.95
5.15
Battery Over Voltage Hysteresis
0.11
V
Battery Minimum Operating Voltage
Rising Edge, V
BAT+
Latch
3.32
3.41
3.50
Charger Voltage to Battery Voltage
Comparator Offset
Comparator
Offset Voltage,
V
CHARGER
–
V
BAT+
MAINCHARGEEN
—
High
–
0.08
–
0.04
–
0.01
V
OS_CB
MAINCHARGEEN
—
Low
0.01
0.04
0.08
Charger Voltage to Battery Voltage
Comparator Hysteresis
0.07
Quiescent Current (Normal Mode)
I
IN(VCHARGER Pin)
1 mA
I
BAT+
600 mA
1
3
mA
Quiescent Current
(Shutdown Mode)
I
IN(VCHARGER Pin)
V
ON/OFF
= 0 V, V
CHARGER
= 4.5 V
0.1
1
A
R
FB1
Pin 12 to Pin 14
1
Feedback Resistor
R
FB2
+ R
FB3
Pin 12 to GND
41
k
V
ON/OFF
= 0 V
V
CHARGER
=
–
1
0.1
1
Battery Leakage Current
I
PIN13
+ I
PIN14
V
BAT+
= 4.2 V
–
1
0.1
2
A
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