RP400 系列
电流模式PWM/VFM升压DC/DC转换器
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概述
The RP400 Series are CMOS-based automatic switch PWM- or VFM-controlled step-up DC/DC converters. RP400 includes a soft start circuit. By simply using an inductor, a capacitor, a diode, and (resistors) as external components, a high-efficiency step-up DC/DC converter can be easily configured. Due to current mode PWM control, the RP400 provides a fast response and high efficiency. Ceramic output capacitors can be used.
The output voltage can be selected from the internally fixed or the externally adjustment. The RP400 has an anti-ringing switch that prevents inductor current from ringing in PWM discontinuous mode. RP400 switches automatically to VFM control in low output current, keeping high efficiency. In addition to SOT-23-5 package, a 1.8mm × 2.0mm square DFN(PL)1820-6 package is also available.
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规格
消费 输入电压范围 0.7 V to 5.5 V (6.0 V) 工作温度范围 -40°C to 85°C (125°C) 电源电流 Typ. 300 µA (VSET = 3.0 V, switching)
Typ. 160 µA (non-switching)待机电流 Typ. 0.15 µA (CE="L") (Ver. A/C) 启动电压 Max. 0.9 V (Ver.C: Max. 1.5 V) 输出电压范围 1.8 V to 5.0 V
(Internally Fixed Ver.: xx1, Externally Adjustable Ver.: 001)输出电压精度 ±2% (Ta = 25°C) 振荡器频率 Typ. 700 kHz 最大占空比 Typ. 88% 封装 DFN(PL)1820-6, SOT-23-5 保护回路/功能
TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust 
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技术资料
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RP400x001A Typical Application (Externally adjustable output voltage type)
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RP400xxx1A Typical Application (Internally fixed output Voltage type)
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RP400x001A Efficiency vs. Output Current
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相关信息
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品质&封装
产品名称 对应 封装 标注 信赖性 RP400Kxx1A-TR DFN(PL)1820-6 RP400Kxx1A RP400K RP400Kxx1B-TR DFN(PL)1820-6 RP400Kxx1B RP400K RP400Kxx1C-TR DFN(PL)1820-6 RP400Kxx1C RP400K RP400Nxx1A-TR-FE SOT-23-5 RP400Nxx1A RP400N-FE RP400Nxx1B-TR-FE SOT-23-5 RP400Nxx1B RP400N-FE RP400Nxx1C-TR-FE SOT-23-5 RP400Nxx1C RP400N-FE - 有关产品的详细信息，请参见数据表。
- 封装文件或数据表包括封装尺寸，卷带规格，卷带盘尺寸，功耗和建议的焊盘图案。
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功能说明
| TSD | 热关断电路 |
|---|---|
| ILX | LX Current Limit Function |
| OCP | 过流保护 |
| OVP | 过压保护 |
| UVLO | 欠压锁定功能 |
| OVLO | Overvoltage Lockout Protection |
| Reverse | 反向电流保护电路 |
| Shutdown | 关机功能 |
| Soft Start | 软启动功能 |
| SSCG | Spread Spectrum Clock Generator Function |
| PGOOD | Power Good Output |
| Auto Discharge | 自动放电功能 |
| Anti-ringing | Anti-ringing Switch Function |
| Sequencing | Start-up Sequencing Control |
| Max Duty | 最大占空比 |
| Ext. Phase | 外部可调相位补偿 |
| LED Adjust | LED High-speed Dimming Control |