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參數(shù)資料
| 型號： | DS2761 |
| 英文描述： | High-Precision Li+ Battery Monitor |
| 中文描述： | 高精度、Li+電池監(jiān)視器 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 286K |
| 代理商： | DS2761 |
DS2761
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charge FET back on (unless another protection condition prevents it). Discharging remains enabled
during overvoltage, and the DS2761 re-enables the charge FET before V
IN
< V
CE
if a discharge current of
-80mA (V
IS
≤
-2mV) or less is detected.
Undervoltage.
If the voltage of the cell drops below undervoltage threshold V
UV
for a period longer than
undervoltage delay t
UVD
, the DS2761 shuts off the charge and discharge FETs, sets the UV flag in the
protection register, and enters sleep mode. The DS2761 provides a current-limited recovery charge path
from PLS to V
DD
to gently charge severely depleted cells during 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 DS2761 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 V
DD
- V
TP
. The DS2761 provides a test current of value I
TST
from PLS to V
SS
to pull
PLS down in order to detect the removal of the offending charge current source.
Overcurrent, Discharge Direction.
If V
IS
is less than -V
OC
for a period longer than t
OCD
, the DS2761
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 V
DD
- V
TP
. The DS2761 provides a
test current of value I
TST
from V
DD
to PLS to pull PLS up in order to detect the removal of the offending
low-impedance load.
Short Circuit.
If the voltage on the SNS pin with respect to V
SS
exceeds short-circuit threshold V
SC
for a
period longer than short-circuit delay t
SCD
, the DS2761 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 V
DD
- V
TP
. The DS2761 provides a test current of value I
TST
from V
DD
to PLS to pull
PLS up in order to detect the removal of the short circuit.
Figure 3.
Li+ PROTECTION CIRCUITRY EXAMPLE WAVEFORMS
(1) To allow the device to react quickly to short circuits, detection occurs 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
V
DD
ACTIVE
V
SS
V
SS
INACTIVE
t
OVD
(1)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2761AE | High-Precision Li+ Battery Monitor |
| DS2761AX | High-Precision Li+ Battery Monitor |
| DS2761BE | High-Precision Li+ Battery Monitor |
| DS2761BX-025 | High-Precision Li+ Battery Monitor |
| DS276S | Low Power Transceiver Chip |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2761AE | 功能描述:IC MON BATT LI-ION HP 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| DS2761AE+ | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2761AE+025 | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2761AE+025/T&R | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC MON BATT LI-ION HP 16-TSSOP |
| DS2761AE+025/T&R | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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