RP503 系列
600mA带同步整流器功能的PWM/VFM降压DC/DC转换器
RP503 系列
600mA带同步整流器功能的PWM/VFM降压DC/DC转换器
拡大
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概述
The RP503 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP503 is PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. The efficiency in low output current (VFM mode) improved compared with existing products. RP503 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 | |
|---|---|
| 输入电压范围 | 2.5 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. 20 µA (VFM, no load) |
| 待机电流 | Typ. 0 µA |
| 输出电压范围 | 0.8 V to 2.5 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 | ±100 ppm/°C |
| 输出电流 | 600 mA |
| 驱动器导通电阻 | Pch: Typ. 0.34 Ω, Nch: 0.43 Ω (VIN = 3.6 V) |
| 振荡器频率 | Typ. 2 MHz |
| 最大占空比 | Min. 100% |
| 封装 | DFN1616-6, SOT-23-5 |
保护回路/功能
| TSD | 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 |
|---|---|
| OCP | 过流保护 注：以前标记为“ILX”的功能现在改为“OCP”。 |
| 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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RP503x25xA 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。
常问问题
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