UC2909MDWREP 供应商
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UC2909MDWREP
品牌：TI 封装/批号：原厂原装/22+ -
UC2909MDWREP
品牌：TI(德州仪器) 封装/批号：SOIC-20/2022+
UC2909MDWREP 属性参数
- 标准包装：1
- 类别：集成电路 (IC)
- 家庭：PMIC - 电池管理
- 系列：-
- 功能：充电管理
- 电池化学：铅酸
- 电源电压：8.8 V ~ 35 V
- 工作温度：-55°C ~ 125°C
- 安装类型：表面贴装
- 封装/外壳：20-SOIC（0.295"，7.50mm 宽）
- 供应商设备封装：20-SOIC
- 包装：®
- 其它名称：296-27721-6
产品特性
- 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 TraceabilityNot to Exceed 185.35-KHz Oscillation Frequency at 125°C
- 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
产品概述
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.