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參數(shù)資料
| 型號： | LM3641M |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Lithium-Ion Battery Pack Protection Circuit |
| 中文描述： | POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 327K |
| 代理商： | LM3641M |
LM3641
Electrical Characteristics
(Continued)
Specifications with standard type face for T
J
= 25C, and those with
bold type
apply over
full Operating Temperature Range
.
Unless otherwise specified, V
SS
= 0V, V
DD
= 3.6V, V
ENABLE
= V
DD
.
Symbol
Parameter
Conditions
Typical
(Note 4)
1.6
Limit
(Note 5)
Units
t
OVERCHARGE
Overcharge Transient
Rejection Time (Note 8)
s
0.57
2.64
s(min)
s(max)
s
s(min)
s(max)
ms
t
OVERDISCHARGE
Overdischarge Transient
Rejection Time (Note 8)
4
3
6
t
OVERCURRENT
Overcurrent Transient
Rejection Time
Duty Cycle of Pulse Charging
6
DC
V
MAX
<
V
CELL
<
V
SAFE
V
CELL
>
V
SAFE
L
→
H
H
→
L
87.5
%
50
5
3
%
ms
t
ENABLE-DELAY
Delay from Rising/Falling
Enable pin to FETs ON/OFF
(Note 9)
MOSFET Threshold Voltage
Minimum Cell Voltage that
can be charged, V
GATE
≈
V
DD
(Note 10)
Maximum High Output
Voltage of Full Pin
V
RECOVERY
V
MIN-CHARGE
±
36
0
mV
V
V
FULL-HIGH
V+
>
V
MAX
I
FULL
<
4 μA
V+
<
V
MAX
V
FULL
= 0V
Duration
<
6 ms
V
DD
1.2V
I
FULL-OFF
Source/Sink Current of Full
Pin in TRI-STATE
10
nA
I
R-SENSE
R
SENSE
Maximum R
SENSE
Current
R
SENSE
Range
60
4
A
m
Note 1:
Absolute Maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The guar-
anteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2:
The maximum allowable power dissipation is calculated by using P
DMAX
= (T
JMAX
T
A
)/
θ
JA
, where T
JMAX
= 150C, T
A
is the ambient temperature, and
θ
JA
= 160C/W.
Note 3:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin.
Note 4:
Typical numbers are at 25C and represent the most likely parametric norm.
Note 5:
Limits are 100% production tested at 25C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Averaging Outgoing Quality Level (AOQL).
Note 6:
Application Specific. This analog parameter’s value is programmed during National’s production testing of the device. Please contact your local NSC sales
office to specify the V
MAX
, I
MAX-CHG
and I
MAX-DIS
values when ordering this device. V
MAX
can be programmed between 4.0V and 4.4V. I
MAX-CHG
can be programmed
between 1A and 5A. I
MAX-DIS
Note 7:
I
includes V
DD
pin peak currents that occur at each t
sample
period. The I
DD
peak current duration is approximately 2.2 ms and the I
VDD
peak current
is approximately 120 μA.
Note 8:
Computed from 4 sample periods of the worst case values of t
SAMPLE
and t
SAMPLE-OVERCHARGED
.
Note 9:
High pulses
<
3 ms (typ) will be typically ignored and low pulses
<
5 ms (typ) will be typically ignored.
Note 10:
V
MIN-CHARGE
will be limited by the threshold of M3.
www.national.com
4
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