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參數(shù)資料
| 型號： | DS2760E-025 |
| 英文描述： | High Precision Li-Ion Battery Monitor |
| 中文描述： | 高精度鋰離子電池監(jiān)視器 |
| 文件頁數(shù)： | 7/25頁 |
| 文件大?。?/td> | 126K |
| 代理商： | DS2760E-025 |
DS2760
7 of 25
Undervoltage.
If the voltage of the cell drops below undervoltage threshold V
UV
for a period longer than
undervoltage delay t
UVD
, the DS2760 shuts off the charge and discharge FETs, sets the UV flag in the
Protection Register, and enters Sleep Mode.
Overcurrent, Charge Direction.
The voltage difference between the IS1 pin and the IS2 pin (V
IS
= V
IS1
–
V
IS2
) is the filtered voltage drop across the current sense resistor. If V
IS
exceeds overcurrent threshold
V
OC
for a period longer than overcurrent delay t
OCD
, the DS2760 shuts off both external FETs and sets the
COC flag in the Protection Register. The charge current path is not re-established until the voltage on the
PLS pin drops below VDD – V
TP
. The DS2760 provides a test current of value I
TST
from PLS to VSS to
pull PLS down when the offending charge current source has been removed.
Overcurrent, Discharge Direction.
If V
IS
is less than -V
OC
for a period longer than t
OCD
, the DS2760
shuts off the external discharge FET and sets the DOC flag in the Protection Register. The discharge
current path is not re-established until the voltage on PLS rises above VDD - V
TP
. The DS2760 provides
a test current of value I
TST
from VDD to PLS to pull PLS up when the offending low-impedance load has
been removed.
Short Circuit.
If the voltage on the SNS pin with respect to VSS exceeds short circuit threshold V
SC
for
a period longer than short circuit delay t
SCD
, the DS2760 shuts off the external discharge FET and sets the
DOC flag in the Protection Register. The discharge current path is not re-established until the voltage on
PLS rises above VDD - V
TP
. The DS2760 provides a test current of value I
TST
from VDD to PLS to pull
PLS up when the short circuit has been removed.
LITHIUM-ION PROTECTION CIRCUITRY EXAMPLE WAVEFORMS
– Figure 3
(1) To allow the device to react quickly to short circuits, detection is actually done on the SNS pin rather
than on the filtered IS1 and IS2 pins. The actual short circuit detect condition is V
SNS
> V
SC
.
Sleep
Mode
V
OV
V
CE
V
UV
V
CELL
V
IS
charge
discharge
CC
DC
-V
SC
V
OC
0
-V
OC
t
SCD
t
OCD
t
OCD
t
UVD
t
OVD
V
PLS
VDD
active
VSS
VSS
inactive
t
OVD
(1)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2760XA-025 | High Precision Li-Ion Battery Monitor |
| DS2760 | High Precision Li-Ion Battery Monitor |
| DS2760E | High Precision Li-Ion Battery Monitor |
| DS2760EA | High Precision Li-Ion Battery Monitor |
| DS2760T | High Precision Li-Ion Battery Monitor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2760E8000001/T&R | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS2760EA | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2760EA-025 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2760K | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Li＜SUP＞+＜/SUP＞ Battery Monitor Evaluation Kit |
| DS2760PALM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fuel Pack Demonstration Software for Palm III and m100 PDAs |
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