RP400 系列
电流模式PWM/VFM升压DC/DC转换器
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.
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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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 |
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
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。
常问问题
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