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參數(shù)資料
| 型號： | DS2720CU |
| 英文描述： | Efficient, Addressable Single-Cell Rechargeable Lithium Protection IC |
| 中文描述： | 高效，尋址單節(jié)可充電鋰電池保護(hù)IC |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 252K |
| 代理商： | DS2720CU |
DS2720
5 of 21
POWER MODES
The DS2720 has two power modes: active and sleep. While in active mode, the DS2720 continuously
performs safety monitoring. In sleep mode, the DS2720 ceases monitoring activities and drives both the
charge and discharge protection FETs to an “off state”. Upon returning to the active mode from the sleep
mode, DS2720 resumes safety monitoring and conditionally turns on the protection FETs.
Table 2.
POWER MODE TRANSITION CONDITIONS
Active
V
DD
< V
UV
Sleep
Sleep
PS
pulled to V
SS
or
V
PLS
> V
DD
+ V
CH
Active
(1)
(1)
DS2720 does not transition to Active Mode if V
DD
< V
SC
.
RECHARGEABLE Li+ PROTECTION CIRCUITRY
During active mode, the DS2720 constantly monitors cell voltage and voltage drop across the FETs to
protect the battery from overcharge (overvoltage), overdischarge (undervoltage), and excessive discharge
currents (overcurrent, short circuit). Conditions and DS2720 responses are described in the sections
below and summarized in Table 3 and Figure 3.
Table 3.
PROTECTION CONDITIONS AND DS2720 RESPONSES
ACTIVATION
CONDITION
NAME
THRESHOLD
DELAY
t
OVD(1)
RESPONSE
RELEASE
THRESHOLD
V
DD
< V
CE
or
V
DD
- V
PLS
> V
OC
V
PLS
> V
DD
+ V
CH
and
V
DD
> V
UV
(charger connected)
Overvoltage
V
DD
> V
OV
CC = V
OLCC
Undervoltage
V
SC
< V
DD
< V
UV
t
UVD
CC = V
OLCC
DC = V
OLDC
Recovery Charge
V
DD
< V
SC
or
(while in active
mode) V
DD
< V
CE
R
TST
enabled
(2)
V
DD
V
CE
Overcurrent
V
DD
- V
PLS
> V
OC
t
OCD
CC = V
OLCC
DC = V
OLCC
CC = V
OLCC
DC = V
OLDC
CC = V
OLCC
DC = V
OLDC
V
PLS
> V
DD
- V
OC(3)
Short Circuit
V
DD
< V
SC
t
SCD
V
PLS
> V
DD
- V
OC(3)
Overtemperature
T
device
> T
MAX
T
device
< T
MAX
All voltages are with respect to V
SS
.
(1) During transition from sleep to active, t
OVD
= 0.
(2) Recovery charge current is limited by R
TST
and forward voltage of blocking diode, which prevents discharging through
R
TST
when recovery charge enabled.
(3) With test current I
TST
flowing from V
DD
to PLS (pullup on PLS).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2720CU+ | 制造商:Maxim Integrated Products 功能描述:PROT LI-ION 4.3V 8USOP - Rail/Tube |
| DS2720CU+T&R | 制造商:Maxim Integrated Products 功能描述:PROT LI-ION 4.3V 8USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LITH BATTERY PROTECT 8-USOP |
| DS2720CU+T&R | 功能描述:IC LITH BATTERY PROTECT 8-USOP RoHS:是 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 |
| DS2720K | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Li+ Battery Protector Evaluation Kit |
| DS2722-F-03 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet |
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