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參數(shù)資料
| 型號(hào)： | UCC3952PWTR-3 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SINGLE-CELL LITHIUM-LON BATTERY PROTECTION IC |
| 中文描述： | 單節(jié)鋰離子電池保護(hù)IC |
| 文件頁(yè)數(shù)： | 4/5頁(yè) |
| 文件大?。?/td> | 35K |
| 代理商： | UCC3952PWTR-3 |
4
UCC3952-1/-2/-3/-4
12
10
11
9
7
8
2
13
14
5
3
4
1
16
15
6
V
PUMP
TDLS
1mS
SETD
RST
SYSTEM
CLOCK
GENERATOR
SEL
4-1
MUX
V
UV
V
OV
V
UVR
V
OVR
THRESHOLD
COMPARATOR
THERMAL
SHUTDOWN
50mV
50mV
2M
10K
1.5V
PACK+
CBPS
TCLK
BNEG
BNEG
BNEG
BNEG
BNEG
BNEG
PACK–
PACK–
PACK–
PACK–
PACK–
PACK–
N/C
T
1SEC
T
10mS
STATE
MACHINE
LOGIC
OV
UV
CLK
APPLICATION INFORMATION
Figure 1. Detailed block diagram.
UDG-98209
Fig. 1 shows a detailed block diagram of the UCC3952.
Battery Voltage Monitoring
The battery cell voltage is sampled every 8ms by con-
necting a resistor divider across it and comparing the re-
sulting voltage to a precision internal reference voltage.
Under normal conditions (cell voltage is below Over Volt-
age threshold and above Under Voltage threshold), the
UCC3952 consumes less than 10 A of current and the
internal MOSFET is fully turned on with the aid of a
charge pump.
When the cell voltage falls below the Under Voltage
threshold for two consecutive samples, the IC discon-
nects the load from the battery pack and enters a super
low power mode. The pack will remain in this state until it
detects the application of a charger, at which point
charging is enabled. The requirement of two consecutive
readings below the UV threshold filters out momentary
drops in cell voltage due to load transients, preventing
nuisance trips.
If the cell voltage exceeds the Over Voltage threshold for
1sec, charging is disabled, however discharge current is
still allowed. This feature of the IC is explained further in
the section on Controlled Charge/Discharge Mode.
APPLICATION INFORMATION
PW package shown
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| UCC3952PWTR-3G4 | 功能描述:電池管理 Sngl Cell LithiumIon Protection IC 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 |
| UCC3956DW | 功能描述:電池管理 Switchmode Charge Management IC 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 |
| UCC3956DWG4 | 功能描述:電池管理 Switchmode Charge Management IC 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 |
| UCC3956DWTR | 功能描述:電池管理 Switchmode Charge Management IC 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 |
| UCC3956DWTRG4 | 功能描述:電池管理 Switchmode Charge Management IC 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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