RP508 系列
600mA 6MHz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 RP508 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier featuring 600mA* output current. The power controlling method can be selected from forced PWM control type or PWM/VFM auto switching control type by inputting a signal to the MODE pin.

    The RP508 includes a soft start circuit, an under-voltage lockout circuit (UVLO), a thermal shutdown circuit, and an auto-discharge function. The RP508 requires only a small numbers of external components to configure a high-efficiency step-up DC/DC converter: an inductor, capacitors and a diode as external components. The high-speed response corresponding to the high-speed switching frequency of 6MHz. The small-sized inductors (1.6 x 0.8 mm, 0.47µH) can be used. A 1.2-mm square compact DFN(PLP)1212-6F package is available.

    *) This is an approximate value, because output current depending on conditions and external parts.

  • 规格
    消费
    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. 15 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 Typ. ±100 ppm/°C
    输出电流 600 mA
    驱动器导通电阻 Pch: Typ. 0.33 Ω, Nch: Typ. 0.24 Ω (VIN = 3.6 V)
    振荡器频率 Typ. 6.0 MHz
    最大占空比 100%
    封装 DFN(PLP)1212-6F

    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
    • Typical Application

      Typical Application

    • RP508K181x Efficiency vs. Output Current (VOUT=1.8V)

      RP508K181x Efficiency vs. Output Current (VOUT=1.8V)

    • RP508K181x Efficiency vs. Output Current (VOUT=3.3V)

      RP508K181x Efficiency vs. Output Current (VOUT=3.3V)

  • 品质&封装
    • 有关产品的详细信息,请参见数据表。
    • 封装文件包括封装尺寸,卷带规格,卷带盘尺寸,功耗和建议的焊盘图案。
    • 请联系我们或我们的代理商以获取未发布的可靠性信息。

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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

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分类:DC / DC开关稳压器

拓扑结构 Buck
输入电压
min (V)
2.3
输入电压
max (V)
5.5
输出电压
min (V)
0.8
输出电压
max (V)
3.3
输出电流
(mA)
600
消费电流
(µA)
15