RP401 系列
1A PWM/VFM升压DC/DC转换器
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概述
The RP401 Series are CMOS-based PWM/VFM step-up DC/DC converters which can start-up from Typ. 0.6V. RP401 can be switched from two control types by inputting signal to the MODE pin - fixed PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. (RP401N Series can be selected from fixed PWM control or PWM/VFM auto switching control.)
RP401 includes a soft start circuit. By simply using an inductor, a capacitor, (resisters for adjustable type), and a diode as external components, a high-efficiency step-up DC/DC converter can be easily configured. The output voltage can be selected from the internally fixed or the externally adjustment. 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 0.6 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. 400 µA (VSET = 3.0 V, switching)
Typ. 130 µA (non-switching, VFM mode)
Typ. 230 µA (non-switching, PWM mode)待机电流 Typ. 0.15 µA (CE = "L") 输出电压范围 1.8 V to 5.5 V
(Internally Fixed: xx1, Externally Adjustable:001)输出电压精度 ±2% 反馈电压 0.6 V 反馈电压精度 ±2% 振荡器频率 Typ. 1.2 MHz 最大占空比 Min. 80%, 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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RP401K001C/D Typical Application (Externally adjustable output voltage type)
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RP401Kxx1A/B Typical Application (Internally fixed output Voltage type)
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RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current: Fixed PWM control
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RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current: PWM/VFM auto switching control
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相关信息
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下载数据表
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 |