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
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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.
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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 ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust -
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
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下载数据表
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 |