MAX17501

60V、500mA、超小尺寸、高效率、同步降压DC-DC转换器

内置FET、60V同步整流buck转换器,支持高效设计


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说明

MAX17501高效率、高电压、同步降压型DC-DC转换器工作于4.5V至60V输入电压范围,设计用于宽范围供电(0.9V至92%VIN)。器件提供高达500mA输出电流,输出电压为3.3V和5V。工作温度范围内,输出电压精度保持在±1.7%以内。器件工作在-40°C至+125°C工业温度范围,采用微小、10引脚(3mm x 2mm) TDFN,带裸焊盘。

器件具有脉宽调制(PWM)峰值电流控制模式,PWM控制架构确保任何工作条件下开关频率保持恒定。低阻片上pMOS/nMOS开关在满载时仍可保持高效工作,允许使用小尺寸外部电感。相对于分立式方案,大大简化了电路布局。

器件开关频率固定为600kHz。为减小输入浪涌电流,通过SS引脚与地之间的外部电容,可调节电压软启动。器件还带有输出使能/欠压锁定引脚(EN/UVLO),允许用户在输入电压达到相应要求时开启器件。输出电压成功达到稳压范围时,经过一定延时,开漏/RESET引脚为系统提供电源就绪指示信号。器件支持打嗝模式限流保护,防止超载和输出短路条件下出现过大功耗。

MAX17501: Typical Operating Circuit MAX17501: Typical Operating Circuit 放大+

关键特性

  • 无需外部元件,降低总体成本
    • 无需肖特基同步即可保持高效、低成本工作
    • 内部补偿,实现超小尺寸布局
    • 全陶瓷电容设计
  • 减少DC/DC稳压器库存清单
    • 4.5V至60V较宽的工作电压范围
    • 0.9V至92%VIN输出电压
    • 整个温度范围内可提供高达500mA电流
    • 600kHz和300kHz开关频率选择
    • 提供10引脚、3mm × 2mm TDFN封装
  • 降低功耗
    • 峰值效率高于90%
    • PFM具有高效的轻负荷
    • 关断电流 = 0.9µA (典型值)
  • 在恶劣工业环境下仍可靠工作
    • 打嗝模式限流和自动重启
    • 内置输出电压监测(开漏/RESET引脚)
    • 电阻可编程EN/UVLO门限
    • 可调软启动和预偏置上电
    • -40°C至+125°C工业温度范围

应用

  • 基站、VOIP、电信
  • 电池供电设备
  • 通用负载点电源
  • 家庭影院
  • HVAC与楼宇控制
  • 工业过程控制
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX17501 4.5600.955
3.3
5
Preset
Resistor
0.5InternalYes1600EE-Sim
TDFN/10
TSSOP/14
$1.52 @1k
查看所有Step-Down Switching Regulators (367)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX17501BTEVKIT: MAX17501B和MAX17501F评估板
MAX17501FTEVKIT: MAX17501B和MAX17501F评估板
MAX17501ATEVKIT: MAX17501A和MAX17501E评估板
MAX17501ETEVKIT: MAX17501A和MAX17501E评估板
MAX17501HTEVKIT: MAX17501H评估板
MAX17501GTEVKIT: MAX17501G评估板
MAX17501GTEVKITE: Evaluation Kit for the MAX17501 in TDFN Package

工具和模型

  • EE-Sim: MAX17501 设计和仿真
  • MAX17501 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX17501AATB+
  • MAX17501AATB+T
  • MAX17501BATB+
  • MAX17501BATB+T
  • MAX17501EATB+
  • MAX17501EATB+T
  • MAX17501FATB+
  • MAX17501FATB+T
  • MAX17501GATB+
  • MAX17501GATB+T
  • MAX17501HATB+
  • MAX17501HATB+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
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