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参数资料
| 型号： | UCC3957M-1G4 |
| 厂商： | Texas Instruments |
| 文件页数： | 6/15页 |
| 文件大小： | 0K |
| 描述： | IC L-I PROTECTOR CIRCUIT 16-QSOP |
| 标准包装： | 75 |
| 功能： | 过压/欠压保护 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 5 V ~ 20 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP/QSOP |
| 包装： | 管件 |
Not Recommended for New Designs
UCC3957 1, UCC3957 2, UCC3957 3, UCC3957 4
SLUS236B – JANUARY 1999 – REVISED SEPTEMBER 2002
APPLICATION INFORMATION
overview (continued)
Figure 2 shows a four-cell protector with optional components to protect the charge FET from excessive
gate-to-source transients. In this application, the Zener diode VR1 and the resistor R2 are optional. They protect
the MOSFET Q1 from excessive open-circuit charger voltage. Diode D1 protects MOSFET Q2 from inductive
kick during turn-off.
VR1 18 V
PACK (+)
Q1
R1 1 M ?
R2
10 k ?
D1
1 A, 50 V
IFR7416
CHARGE
Q3
2N7002
Q2
IFR7416
DISCHARGE
C5
4.7 μ F
25 V
C1
0.1 μ F
1
VDD
DVDD
16
LI – ION
BATTERY
STACK
2
3
CLCNT
WU
AVDD
CDLY2
15
14
C2
0.1 μ F
C3
OPTIONAL
+
+
4
AN1
DCHG 13
5
AN2
CHG
12
+
+
6
7
AN3
AN4
AN4
CDLY1
11
10
C4
0.022 μ F
PACK ( – )
RSENSE
0.025 ?
8
BATLO CHGEN
9
UDG – 98017
Figure 2. Four-Cell Lithium-Ion Protector Application Diagram
connecting the cell stack
When connecting the cell stack to the circuit, it is important to do so in the proper order. First, the bottom of the
stack should be connected to AN4 . Next, the top of the stack should be connected to VDD. The cell taps can
then be connected to AN1, AN2, and AN3 in any order.
choosing three or four cells
For three-cell packs, the cell-count pin (CLCNT) should be connected to the DVDD pin, and the AN3 pin should
be tied to the AN4 pin. For four-cell applications, the CLCNT pin should be grounded (to AN4) and the AN3 pin
is connected to the positive terminal of the bottom cell in the stack.
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UCC3957M-2 | 功能描述:电池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| UCC3957M-2 WAF | 制造商:Texas Instruments 功能描述: |
| UCC3957M-2G4 | 功能描述:电池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| UCC3957M-3 | 功能描述:电池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| UCC3957M-3 WAF | 制造商:Texas Instruments 功能描述: |
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