- 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：采用 SOT-23 封装的 4.5V 至 42V、0.3A 降压直流/直流开关稳压器
- 点击这里打开及下载LMR14203的技术文档资料
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The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low RDSON (0.9? typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 1.25 MHz allowing the use of small external components while still being able to have low output voltage ripple. Soft-start can be implemented using the shutdown pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.
The LMR14203 is optimized for up to 300 mA load current.
Additional features include: thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.
- Input Voltage Range of 4.5V to 42V
- Output Voltage Range of 0.765V to 34V
- Output Current up to 0.3A
- 1.25 MHz Switching Frequency
- Low Shutdown Iq, 16 μA Typical
- Short Circuit Protected
- Internally Compensated
- Soft-Start Function
- Thin SOT-23-6 Package (2.97 x 1.65 x 1mm)
- Fully Enabled for WEBENCH? Power Designer
- Tight Accuracy for Powering Digital ICs
- Extremely Easy to Use
- Tiny Overall Solution Reduces System Cost
All trademarks are the property of their respective owners.
- Vin (Min) (V)
- 4.5
- Vin (Max) (V)
- 42
- Vout (Min) (V)
- 0.765
- Vout (Max) (V)
- 34
- Iout (Max) (A)
- 0.3
- Iq (Typ) (uA)
- 1300
- Switching frequency (Min) (kHz)
- 950
- Switching frequency (Max) (kHz)
- 1500
- Features
- Enable, Over Current Protection
- Rating
- Catalog
- Regulated outputs (#)
- 1
- Control mode
- Current Mode
- Duty cycle (Max) (%)
- 87
LMR14203的完整型号有：LMR14203XMK/NOPB、LMR14203XMKE/NOPB、LMR14203XMKX/NOPB，以下是这些产品的关键参数及官网采购报价：
LMR14203XMK/NOPB，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-6，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LMR14203XMK/NOPB的批量USD价格：.929（1000+）
LMR14203XMKE/NOPB，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-6，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LMR14203XMKE/NOPB的批量USD价格：.929（1000+）
LMR14203XMKX/NOPB，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-6，包装数量MPQ：3000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LMR14203XMKX/NOPB的批量USD价格：.774（1000+）
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