RP504 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 RP504 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP504K/L can be switched from two control types by inputting signal to the MODE pin - forced PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. (RP504N Series can be selected from forced PWM control or PWM/VFM auto switching control.) RP504 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. The small inductor (2.2µH) and output capacitor (4.7µH) can be used by the switching of 2.25MHz. In addition to SOT-23-5 and DFN1616-6B packages, a 1.2mm × 1.6mm DFN(PL)1216-6F package is also available.
规格
消费 | |
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输入电压范围 | 2.3 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. 25 µA (VFM, no load) |
待机电流 | Typ. 0 µA |
输出电压范围 | 0.8 V to 3.3 V (0.1 V step) |
输出电压精度 | ±1.5% (VOUT ≥ 1.2 V, Ta = 25°C) ±18 mV (VOUT < 1.2 V) |
输出电压温度系数 | ± 40 ppm/°C |
输出电流 | 600 mA |
驱动器导通电阻 | Pch: Typ. 0.34 Ω, Nch: Typ. 0.43 Ω (VIN = 3.6 V) |
振荡器频率 | Typ. 2.25 MHz |
最大占空比 | Min. 100% |
封装 | DFN(PL)1216-6F, DFN1616-6B, 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 |
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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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RP504x331x 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 |
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RP504Kxx1x-E2 |
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DFN(PL)1216-6F | RP504K | RP504K |
RP504Lxx1x-TR |
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DFN1616-6B | RP504L | RP504L |
RP504Nxx1x-TR-FE |
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SOT-23-5 | RP504N | RP504N-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。