R1215 系列
PWM升压DC/DC控制器

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  • 概述

    The R1215 Series are low supply current CMOS PWM step-up DC/DC controllers. R1215 does not include an internal output transistor. By simply using a power MOS, an inductor, a diode, resistors, and capacitors as external components, a high-efficiency step-up DC/DC converter can be easily configured. The oscillator maximum duty cycle and soft start time as well as phase compensation can be set with external resistor and capacitor. (The oscillator maximum duty cycle does not include internal limit.)

    The oscillator frequency can be selected from 700kHz or 1.4MHz. The input voltage of R1215 is lower than the R1212. The voltage range is 1.8V (2.0V) to 5.5V. The latch type protection circuit embedded into the device latches the external driver in the "OFF" state when the oscillator maximum duty cycle continues for a predetermined period of time setting by an external capacitor. R1215 also includes an under-voltage lockout circuit (UVLO).

  • 规格
    消费
    输入电压范围 2.0 V to 5.5 V (6.5 V) (R1215D002A/B)
    1.8 V to 5.5 V (6.5 V) (R1215D002E/F)
    工作温度范围 -40°C to 85°C (125°C)
    电源电流 Typ. 600 µA (700 kHz)
    Typ. 900 µA (1.4 MHz)
    反馈电压 1.0 V
    反馈电压精度 ±15 mV
    反馈电压温度系数 Typ. ±150 ppm/°C
    振荡器频率 Typ. 700 kHz, 1.4 MHz
    最大占空比 Externally Adjustable
    封装 SON-8

    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

    • R1215D002E Efficiency vs. Output Current

      R1215D002E Efficiency vs. Output Current

  • 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 Boost
输入电压
min (V)
1.8
输入电压
max (V)
5.5
消费电流
(µA)
600