- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：直流/直流开关稳压器 - 降压稳压器
- 功能描述：8V 至 50V、1.25A 恒定导通时间非同步降压稳压器
- 点击这里打开及下载LM34910C的技术文档资料
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The LM34910C Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.25A to the load. This buck regulator contains a 55V N-Channel Buck Switch, and is available in the thermally enhanced WSON-10 package. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.
- Integrated 55V, N-Channel Buck Switch
- Integrated Start-Up Regulator
- Input Voltage Range: 8V to 50V
- No Loop Compensation Required
- Ultra-Fast Transient Response
- Operating Frequency Remains Constant with Load Current and Input Voltage
- Maximum Duty Cycle Limited During Start-Up
- Adjustable Output Voltage
- Valley Current Limit At 1.25A
- Precision Internal Reference
- Low Bias Current
- Highly Efficient Operation
- Thermal Shutdown
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- Vin (Min) (V)
- 8
- Vin (Max) (V)
- 50
- Vout (Min) (V)
- 2.5
- Vout (Max) (V)
- 45
- Iout (Max) (A)
- 1.25
- Iq (Typ) (uA)
- 630
- Switching frequency (Min) (kHz)
- 50
- Switching frequency (Max) (kHz)
- 1000
- Features
- Enable, Over Current Protection
- Rating
- Catalog
- Regulated outputs (#)
- 1
- Control mode
- Constant on-time (COT)
- Duty cycle (Max) (%)
- 97
LM34910C的完整型号有：LM34910CSD/NOPB、LM34910CSDE/NOPB、LM34910CSDX/NOPB，以下是这些产品的关键参数及官网采购报价：
LM34910CSD/NOPB，工作温度：-40 to 125，封装：WSON (DPR)-10，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM34910CSD/NOPB的批量USD价格：1.499（1000+）
LM34910CSDE/NOPB，工作温度：-40 to 125，封装：WSON (DPR)-10，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM34910CSDE/NOPB的批量USD价格：1.499（1000+）
LM34910CSDX/NOPB，工作温度：-40 to 125，封装：WSON (DPR)-10，包装数量MPQ：4500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM34910CSDX/NOPB的批量USD价格：1.249（1000+）
LM34910C PSpice Transient Model
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