LP3941 Datasheet, PDF (14/34 Pages) Texas Instruments – Cellular Phone Power Management Unit

Symbol
t_LH
t_HL
I_Q
Parameter
Condition
Rise Time Low to High
Overdrive = 100 mV
C_OUT = 10 pF (Note 10)
Fall Time High to Low
Overdrive = 100 mV
C_OUT = 10 pF (Note 10)
Quiescent Current per Comparator
Note: Comparator output buffers are powered by LDO3 output voltage.
Min
Typ
Max
Units
5
ns
5
ns
5
µA
RESET Electrical Characteristics
Unless otherwise noted, V_BATT = +2.5V to 5.5V. 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, −40 to +125°C. (Note 2, Note 8, Note
9)
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
Output Voltage High
OH
Internal Logic Supply
I_SOURCE = 0 µA
V_O3–0.2
V_OL
Output Voltage Low
Internal Logic Supply
I_SINK = 500 µA
V_TSHLD
V_O1 Threshold
V_O1 Rising
90
93
V_O1 Falling
82
85
t_DELAY
RESET Active Time-Out Period _{From VO1 ≥ 93% until RESET = High}
34
40
t_PS-HOLD PS-HOLD Timer
From RESET = Hi to PS-HOLD = Hi
From PS-HOLD = Low to RESET = Low
29
35
V
0.4
V
96
%
88
%
47
ms
41
ms
t_RESET
Shut-Down Timer
From RESET = Low until LDOs turned off
(no output regulation)
51
60
70
ms
R_PU
I_S-MAX
Pull-up Resistance to V_O1
Maximum Sink Current
14
kΩ
5
mA
LED Driver Electrical Characteristics
Unless otherwise noted, V_BATT = +2.5V to 5.5V. 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, −40 to +125°C. (Note 2, Note 8, Note
9)
Symbol
Parameter
Condition
Min
Typ
Max
Units
V_OL
I_LEAKAGE
LED1–3 Output Low Level
LED1–3 Off Leakage Current
I_SINK = 40 mA
V_DR = 5.5V
0.17
0.55
V
4
µA
Main Battery Charger Electrical Characteristics
Unless otherwise noted, V_CHG-IN = 5V, V_BATT = 4V. 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, −40 to +125°C. (Note 2, Note 9, Note
8, Note 12)
Symbol
Parameter
Condition
Min
Typ
Max Units
V
CHG-IN
Input Voltage Range
Operating Range
Battery Connected
4.5
12
V
4.5
6
V_OK−TSHD
Adapter OK Trip Point (CHG-IN)
V_CHG-IN–V_BATT Rising
V_CHG-IN–V_BATT Falling
80
mV
30
mV
V_{UVLO−TSHD}
Under Voltage Lock-Out Trip Point V_CHG-IN Rising
V_CHG-IN Falling
3.85
4.25
4.65
V
3.90
V
V_{OVLO−TSHD}
Over Voltage Lock-Out Trip Point V_CHG-IN Rising
V_CHG-IN Falling
5.46
6.00
6.54
V
5.80
V
I_BATTSENSE Leakage Current
V_BATT = 4.2V
8
µA
I_BATT
Battery Input Current
V_CHG-IN ≤ 4V
2
µA
Charging Complete, charger connected,
V_BATT = 4.1V
150
µA
13
200945 Version 4 Revision 2 Print Date/Time: 2011/10/25 13:09:13
www.ti.com