UCC3956 具有差动电流感应的锂离子开关模式充电管理 IC
|
UCC3956 |
| # Series Cells |
Multiple |
| Charge Current(Max)(A) |
>2 |
| Charge Status Outputs |
2 |
| Control Topology |
Switchmode |
| Switching Frequency(kHz) |
110 |
| Primary Charge Termination Method |
Minimum Current |
| Pin/Package |
20PDIP, 20SOIC |
| Vin(Max)(V) |
20 |
UCC3956 描述
The UCC3956 family of switch-mode lithium-ion battery-charger controllers accurately control lithium-ion battery charging with a highly-efficient average-current-control loop. This chip is designed to work as a stand-alone charger controller for a single-cell or multiple-cell battery pack. This chip combines charge-state logic and average-current PWM control circuitry with a 14-bit counter to program the overcharge time. The charge-state logic indicates current-or voltage-control depending on the charge state. The chip includes undervoltage lockout (UVLO) circuitry to ensure sufficient supply voltage is present before output switching starts. Additional circuit blocks include a differential-current-sense amplifier, a 1% voltage reference, voltage- and current-error amplifiers, PWM latch, charge-state decode bits, and a 500-mA output driver.
UCC3956 特性
- Precision 4.1 V Reference (1%)
- High-Efficiency Battery Charger Solution
- High-Side or Low-Side Switch-Mode Current-Sensing
- Average-Current-Mode Control from Trickle to Overcharge
- Resistor-Programmable Charge Currents
- Internal State Logic Provides Four Charge States
- Programmable Overcharge Time
- CHG Pin Initiates Charging
- Output-Status Bits Report Charge State
UCC3956 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| UCC3956DW |
ACTIVE |
-20 to 70 |
2.55 | 1ku |
SOIC (DW) | 20 |
25 | TUBE |
|
| UCC3956DWG4 |
ACTIVE |
-20 to 70 |
2.55 | 1ku |
SOIC (DW) | 20 |
25 | TUBE |
|
| UCC3956N |
ACTIVE |
-20 to 70 |
2.55 | 1ku |
PDIP (N) | 20 |
20 | TUBE |
|
| UCC3956NG4 |
ACTIVE |
-20 to 70 |
2.55 | 1ku |
PDIP (N) | 20 |
20 | TUBE |
|
UCC3956 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| UCC3956DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3956DW |
UCC3956DW |
| UCC3956DWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3956DWG4 |
UCC3956DWG4 |
| UCC3956N |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UCC3956N |
UCC3956N |
| UCC3956NG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UCC3956NG4 |
UCC3956NG4 |
UCC3956 应用技术支持与电子电路设计开发资源下载
- UCC3956 数据资料 dataSheet 下载.PDF
- TI 德州仪器电池管理产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- QFN Layout Guidelines (PDF 1279 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
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