UC2909-EP 具有差动电流感应的增强型产品开关模式铅酸电池充电器
UC2909-EP 描述
The UC2909 controls lead acid battery charging with a highly efficient average current mode control loop. This chip combines charge state logic with average current PWM control circuitry. Charge state logic commands current or voltage control depending on the charge state. The chip includes undervoltage lockout circuitry to insure sufficient supply voltage is present before output switching starts. Additional circuit blocks include a differential current sense amplifier, a 1.5% voltage reference, a –3.9-mV/°C thermistor linearization circuit, voltage and current error amplifiers, a PWM oscillator, a PWM comparator, a PWM latch, charge state decode bits, and a 100-mA open collector output driver.
|
UC2909-EP |
| Charge Status Outputs |
2 |
| Control Topology |
Switchmode |
| Primary Charge Termination Method |
Maximum Voltage,Minimum Current |
| Pin/Package |
20SOIC |
| Vin(Max)(V) |
40 |
UC2909-EP 特性
- Accurate and Efficient Control of Battery Charging
- Average Current Mode Control from Trickle to Overcharge
- Resistor Programmable Charge Currents
- Thermistor Interface Tracks Battery Requirements Over Temperature
- Output Status Bits Report on Four Internal Charge States
- Undervoltage Lockout Monitors VCC and VREF
- APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Military (–55°C/125°C) Temperature Range(1)
- Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
- Not to Exceed 185.35-KHz Oscillation Frequency at 125°C
UC2909-EP 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| UC2909MDWREP |
ACTIVE |
-55 to 125 |
5.78 | 1ku |
SOIC (DW) | 20 |
2000 | LARGE T&R |
UC2909EP |
UC2909-EP 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 |
| UC2909MDWREP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-250C-1 YEAR |
UC2909MDWREP |
UC2909MDWREP |
UC2909-EP 应用技术支持与电子电路设计开发资源下载
- UC2909-EP 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
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