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LP3947 Arkusz danych(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Numer części LP3947
Szczegółowy opis  USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC
PDF  14 Pages
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

LP3947 Arkusz danych(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Notes 1,
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
CHG-IN
−0.3V to +6.5V
All pins except GND and CHG-IN
(Note 3)
−0.3V to +6V
Junction Temperature
150˚C
Storage Temperature
−40˚C to +150˚C
Power Dissipation (Note 4)
1.89W
ESD (Note 5)
Human Body Model
Machine Model
2kV
200V
Operating Ratings (Notes 1, 2)
CHG-IN
0.3V to 6.5V
EN, ISEL, MODE, SCL, SDA,
V
T (Note 3)
0V to 6V
Junction Temperature
−40˚C to +125˚C
Operating Temperature
−40˚C to +85˚C
Thermal Resistance
θ
JA
37˚C/W
Maximum Power Dissipation
(Note 6)
1.21W
Electrical Characteristics
Unless otherwise noted, V
CHG-IN = 5V, VBATT = 4V, CCHG-IN = 1 µF, CBATT = 10 µF. Typical values and limits appearing in nor-
mal type apply for T
J = 25˚C. Limits appearing in boldface type apply over the entire junction temperature range for operation,
T
J = −40˚C to +85˚C. (Notes 7, 8, 9)
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
Max
V
CC SUPPLY
V
CHG-IN
Input Voltage Range
4.5
6
V
V
USB
4.3
6
I
CC
Quiescent Current
V
CHG-IN
≤ 4V
2
20
µA
EOC = Low, adaptor connected,
V
BATT = 4.1V
50
150
V
OK-TSHD
Adaptor OK Trip Point (CHG-IN)
V
CHG-IN –VBATT (Rising)
60
mV
V
CHG-IN –VBATT (Falling)
50
mV
V
UVLO-TSHD
Under Voltage Lock-Out Trip Point
V
CHG-IN (Rising)
3.95
3.6
4.3
V
V
CHG-IN (Falling)
3.75
3.4
4.1
V
V
OVLO-TSHD
Over Voltage Lock-Out Trip Point
V
CHG-IN (Rising)
5.9
V
V
CHG-IN (Falling)
5.7
Thermal Shutdown Temperature
(Note 8)
160
˚C
Thermal Shutdown Hysteresis
20
BATTERY CHARGER
I
CHG
Fast Charge Current Range
ISEL = High, In USB Mode
100
mA
ISEL = Low, In USB Mode
500
In AC Adaptor Mode
100
750
Fast Charge Current Accuracy
I
CHARGE = 100 mA or 150 mA
−20
+20
mA
I
CHARGE
≥ 200 mA
−10
+10
%
I
PRE-CHG
Pre-Charge Current
V
BATT =2V
45
70
mA
I
EOC
End of Charge Current Accuracy
100 mA to 450 mA, 0.1C EOC Only
(Note 10)
−10
+10
mA
500 mA to 750 mA, All EOC Points
−20
+20
%
V
BATT
Battery Regulation Voltage (For 4.1V
Cell)
T
J = 0˚C to +85˚C
4.1
4.059
4.141
V
T
J = −40˚C to +85˚C
4.1
4.038
4.162
Battery Regulation Voltage (For 4.2V
Cell)
T
J = 0˚C to +85˚C
4.1
4.158
4.242
T
J = −40˚C to +85˚C
4.2
4.137
4.263
V
CHG-Q
Full Charge Qualification Threshold
V
BATT Rising, Transition from
Pre-Charge to Full Current
3.0
V
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