RP500 系列
600mA带同步整流器功能的PWM/VFM降压DC/DC转换器
RP500 系列
600mA带同步整流器功能的PWM/VFM降压DC/DC转换器
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概述
The RP500 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP500 can be selected from two control types - fixed PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. RP500 includes a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch protection circuit. By simply using an inductor and capacitors as external components, a high-efficiency step-down DC/DC converter can be easily configured.
规格
消费 | |
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输入电压范围 | 2.55 V to 5.5 V (6.5 V) |
工作温度范围 | -40°C to 85°C (125°C) |
电源电流 | Typ. 400 µA (PWM, no switching) Typ. 100 µA (VFM, no switching) |
待机电流 | Typ. 0 µA |
输出电压范围 | 1.1 V to 3.3 V (0.1 V step) |
输出电压精度 | ±1.5% (VOUT ≥ 1.6 V, Ta = 25°C) ±24 mV (VOUT < 1.6 V) |
输出电压温度系数 | ±100 ppm/°C |
输出电流 | 600 mA |
驱动器导通电阻 | Pch: Typ. 0.3 Ω, Nch: 0.38 Ω (VIN = 3.6 V) |
振荡器频率 | Typ. 1.2 MHz |
最大占空比 | Min. 100% |
封装 | DFN(PL)1820-6, SOT-23-6W |
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 |
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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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Typical Application
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RP500x331A/333A Efficiency vs. Output Current
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相关信息
品质&封装
- 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。