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UC2909QTR PDF预览

UC2909QTR

更新时间: 2024-09-09 23:38:55
品牌 Logo 应用领域
其他 - ETC 电池
页数 文件大小 规格书
10页 434K
描述
Battery Management

UC2909QTR 数据手册

 浏览型号UC2909QTR的Datasheet PDF文件第2页浏览型号UC2909QTR的Datasheet PDF文件第3页浏览型号UC2909QTR的Datasheet PDF文件第4页浏览型号UC2909QTR的Datasheet PDF文件第5页浏览型号UC2909QTR的Datasheet PDF文件第6页浏览型号UC2909QTR的Datasheet PDF文件第7页 
UC2909  
UC3909  
Switchmode Lead-Acid Battery Charger  
FEATURES  
DESCRIPTION  
Accurate and Efficient Control of  
Battery Charging  
The UC3909 family of Switchmode Lead-Acid Battery Chargers accurately  
controls lead acid battery charging with a highly efficient average current  
mode control loop. This chip combines charge state logic with average cur-  
rent 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 –3.9mV/°C thermistor linearization  
circuit, voltage and current error amplifiers, a PWM oscillator, a PWM com-  
parator, a PWM latch, charge state decode bits, and a 100mA open collec-  
tor output driver.  
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  
BLOCK DIAGRAM  
UDG-95007-1  
Pin numbers refer to J, N, DW packages.  
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