- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
- 功能描述：汽车类 8.3V 至 15V、1A 推挽式电流模式 PWM 控制器
- 点击这里打开及下载UCC2808A-1Q1的技术文档资料
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The UCC2808A-xQ1 is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC2808A-xQ1 contains all of the control and drive circuitry required for off-line or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count.
The UCC2808A-xQ1 dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.
The UCC2808A-xQ1 family offers a variety of package options and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery powered systems. Thresholds are shown in the ordering information table.
The UCC2808A-xQ1 is an enhanced version of the UCC2808 family. The significant difference is that the A versions feature an internal discharge transistor from the CS pin to ground, which is activated each clock cycle during the oscillator dead time. The feature discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay.
- Qualified for Automotive Applications
- ESD Protection Exceeds 1500 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
- Dual Output Drive Stages in Push-Pull Configuration
- Current Sense Discharge Transistor to Improve Dynamic Response
- 130-μA Typical Starting Current
- 1-mA Typical Run Current
- Operation to 1 MHz
- Internal Soft Start
- On-Chip Error Amplifier With 2-MHz Gain Bandwidth Product
- On Chip VDD Clamping
- Output Drive Stages Capable of 500-mA Peak-Source Current, 1-A Peak-Sink Current
- Topology
- Push-Pull
- Duty cycle (Max) (%)
- 50
- Supply voltage (Max) (V)
- 14
- UVLO thresholds on/off (V)
- 12.5/8.3
- Features
- Soft Start
- Operating temperature range (C)
- -40 to 125
- Rating
- Automotive
- Frequency (Max) (kHz)
- 1000
- Gate drive (Typ) (A)
- 1
UCC2808A-1Q1的完整型号有：UCC2808AQDR-1G4Q1、UCC2808AQDR-1Q1，以下是这些产品的关键参数及官网采购报价：
UCC2808AQDR-1G4Q1，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC2808AQDR-1G4Q1的批量USD价格：1.229（1000+）
UCC2808AQDR-1Q1，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC2808AQDR-1Q1的批量USD价格：1.09（1000+）
UCC2808AQDR-1G4Q1，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC2808AQDR-1G4Q1的批量USD价格：1.229（1000+）
UCC2808AQDR-1Q1，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC2808AQDR-1Q1的批量USD价格：1.09（1000+）
