LP3910SQ-AN Datasheet, PDF (8/60 Pages) National Semiconductor (TI) – Power Management IC for Hard Drive Based Portable Media Players

Symbol
I_TSENSE
T_REG
Parameter
Battery Temperature Sense Current
Regulated Charger Junction
Temperature
Conditions
Min
Typ
Max Units
72.5
75
77.5
µA
105
115
125
°C
Symbol
I_EOC
V_RESTARTl
T_{CHG_IN}
T_USB
T_{PQ_FULL}
T_{FULL_PQ}
T_BATTLOWF
T_BATTLOWR
T_BATTEMP
T_{ONOFF_F}
T_{ONOFF_R}
T_RESTART
T_CCCV
T_CvEOC
T_POWERACK
T_TSHD
T_TOPOFF
T_10HR
T_1HR
Detection and Timing
Parameter
Conditions
End-of-Charge Current
I_PROG = 500 mA,
10% EOC Setting
I_PROG = 500 mA
5% EOC Setting
Battery Restart Charging Voltage
Deglitch Adapter Insertion
V_TERM = 4.1V
V_TERM = 4.2V
V_TERM = 4.38V
Deglitch USB Power Insertion
Deglitch Time for Pre-qualification to Full-
rate Charge Transition
Deglitch Time for Full-rate to Pre-
qualification Transition
Deglitch Time for V_BATT Falling below
V_BATTLOW Threshold
Deglitch Time for V_BATT Rising above
V_BATTLOW Threshold
Deglitch Time for Recovery from Battery
Temperature Fault
Deglitching on Falling Edge of ONOFF
Pin
Deglitching on Rising Edge of ONOFF
Pin
Deglitching on Falling V_BATT Crossing
V_RESTART
Deglitching of CC->CV Charging
Transition
Deglitching of CV->EOC (End of Charge)
Deglitching of POWERACK Pin
Deglitching of Thermal Shutdown
Topoff Timer
10 Hour Safety Timer
1 Hour Prequal Safety Timer
Min
Typ
Max Units
40
50
60
mA
20
25
30
mA
3.82
3.9V
3.94
3.94
4.0V
4.06
V
4.14 4.2 V 4.26
28
32
36
ms
28
32
36
ms
8
10
12
ms
8
10
12
ms
4
5
6
ms
4
5
6
ms
8
10
12
ms
28
32
36
ms
28
32
36
ms
8
10
12
ms
8
10
12
ms
8
10
12
ms
4
5
6
ms
2
ms
17
21
25
min
9
10
11 hours
0.9
1
1.1
hour
Outputs Electrical Characteristics: CHG, STAT
Unless otherwise noted, VDD = 5V, VBATT = 3.6V. C_BATT = 4.7 µF, C_{CHG_DET} = 10 µF. Typical values and limits appearing in
normal type apply for T_J = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation,
T_J = 0°C to +125°C. (Notes 2, 6, 7, 8, 10)
Symbol
Parameter
Conditions
Min
Typ
Max Units
I_LED
Output High Level
V_LED = 2.0V
4
5
6
mA
CHSPV Register (02)h bit 5 = 1
I_LED
Output High Level
V_LED = 2.0V
8
10
12
mA
CHSPV Register (02)h bit 5 = 0
I_LEAKAGE
LED_FREQ
Leakage Current
Blinking Frequency
V_LED = 1.5V, LED off
0.1
5
µA
0.8
1
1.2
Hz
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