參數(shù)資料
型號： LQA48B
廠商： National Semiconductor Corporation
英文描述： Cellular Phone Power Management Unit
中文描述： 蜂窩電話電源管理單元
文件頁數(shù)： 13/32頁
文件大小： 761K
代理商： LQA48B
Comparators’ Electrical Characteristics
(Continued)
Unless otherwise noted, V
= +2.5V to 5.5V, V
= 3.0V, V
= 0.27V. Typical values and limits appearing in normal type
apply for T
= 25C. Limits appearing in
boldface
type apply over the entire junction temperature range for operation, 40 to
+125C. (Notes 2, 8, 9)
Symbol
I
Q
Parameter
Condition
Min
Typ
Max
Units
Quiescent Current per
Comparator
Note:
Comparator output buffers are powered by LDO3 output voltage.
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
= 25C. Limits
appearing in
boldface
type apply over the entire junction temperature range for operation, 40 to +125C. (Notes 2, 8, 9)
Symbol
V
OH
Parameter
Condition
Min
Typ
Max
Units
Output Voltage High
Internal Logic Supply
I
SOURCE
= 0 μA
Internal Logic Supply
I
SINK
= 500 μA
V
O1
Rising
V
O1
Falling
From V
O1
≥
93% until RESET = High
From RESET = Hi to PS-HOLD = Hi
From PS-HOLD = Low to RESET =
Low
From RESET = Low until LDOs
turned off (no output regulation)
V
O3
–0.2
V
V
OL
Output Voltage Low
0.4
V
V
TSHLD
V
O1
Threshold
90
82
34
93
85
40
96
88
47
%
%
ms
t
DELAY
t
PS-HOLD
RESET Active Time-Out Period
PS-HOLD Timer
29
35
41
ms
t
RESET
Shut-Down Timer
51
60
70
ms
R
PU
I
S-MAX
Pull-up Resistance to V
O1
Maximum Sink Current
14
k
mA
5
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
= 25C. Limits
appearing in
boldface
type apply over the entire junction temperature range for operation, 40 to +125C. (Notes 2, 8, 9)
Symbol
V
OL
I
LEAKAGE
Parameter
Condition
Min
Typ
0.17
4
Max
0.55
Units
V
μA
LED1–3 Output Low Level
LED1–3 Off Leakage Current
I
SINK
= 40 mA
V
DR
= 5.5V
Main Battery Charger Electrical Characteristics
Unless otherwise noted, V
= 5V, V
= 4V. Typical values and limits appearing in normal type apply for T
= 25C.
Limits appearing in
boldface
type apply over the entire junction temperature range for operation, 40 to +125C. (Notes 2, 9,
8, 12)
Symbol
V
CHG-IN
Parameter
Condition
Min
4.5
4.5
Typ
Max
12
6
Units
Input Voltage Range
Operating Range
Adapter OK Trip Point
(CHG-IN)
V
Battery Connected
V
CHG-IN
–V
BATT
Rising
V
CHG-IN
–V
BATT
Falling
V
CHG-IN
Rising
V
CHG-IN
Falling
V
CHG-IN
Rising
V
CHG-IN
Falling
V
BATT
= 4.2V
V
CHG-IN
≤
4V
Charging Complete, charger
connected, V
BATT
= 4.1V
V
OK
TSHD
80
30
4.25
3.90
6.00
5.80
8
2
mV
mV
V
V
V
V
μA
μA
V
UVLO
TSHD
Under Voltage Lock-Out Trip
Point
3.85
4.65
V
OVLO
TSHD
Over Voltage Lock-Out Trip
Point
5.46
6.54
I
BATTSENSE
I
BATT
Leakage Current
Battery Input Current
150
μA
L
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