MAX20034

高效、2.2MHz、36V、双通道、Buck控制器,静态电流仅为17μA

业界最低IQ前端汽车电源,支持高功率应用


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说明

MAX20034是一款汽车2.2MHz、双通道、同步降压型控制器IC,提供两个高压、同步降压型控制器,以180°错相工作。IC工作在3.5V至42V输入电压,可通过99%占空比工作在压差条件。器件设计用于工作在较宽输入电压范围、中至高功率要求的应用,例如汽车冷启动或引擎启停条件。

IC的降压型控制器工作在高达2.2MHz频率,允许使用小尺寸外部元件、降低输出纹波,以及保证无AM波段干扰。开关频率可通过电阻调节(220kHz至2.2MHz)。SYNC输入的可编程能力支持三种频率模式,优化性能:强制固定频率、超低静态电流的跳脉冲模式、外部时钟同步。IC也提供扩频调制,最大程度降低EMI干扰。

IC具有电源就绪监测器、过压锁定和欠压锁定。保护特性包括逐周期限流和热关断保护。MAX20034工作在-40°C至+125°C汽车级温度范围。

MAX20034 MAX20034 放大+

关键特性

  • 满足严格的OEM模块功耗和性能规范
    • 跳脉冲模式下静态电流仅为17µA
    • ±1.5%输出电压精度:5.0V/3.3V固定电压,或1V至10V可调节
  • 支持启动就绪设计
    • 3.5V至36V输入电源范围
  • EMI抑制特性降低对敏感无线电频段的干扰,且不影响较宽输入电压范围
    • 50ns (典型值)最小导通时间,保证利用汽车电池实现3.3V输出无跳跃操作,2.2MHz
    • 扩频选项
    • 频率同步输入
    • 通过电阻设定频率:220kHz至2.2MHz
  • 集成和热增强封装,节省电路板空间和成本
    • 双通道、高达2.2MHz、降压型控制器
    • 180°错相操作
    • 电流模式控制器,带有强制脉宽调制(FPWM)和跳脉冲模式
    • 热增强,28引脚TQFN-EP封装
  • 保护特性提高系统可靠性
    • 电源过压和欠压锁定
    • 过热和短路保护

应用

  • DC动力系统分配
  • 导航及无线电头单元
  • 汽车电源POL应用
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX20034 3.536110
3.3
5
Preset
Resistor
30ExternalYesYes2
220
250
275
300
330
350
400
440
500
540
560
600
700
800
900
1200
1700
2000
2100
2250
EE-Sim
TQFN/28
$1.64 @1k
查看所有Step-Down Switching Regulators (404)
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。


MAX20034: 高效、2.2MHz、36V、双通道、Buck控制器,静态电流仅为17μA
MAX20034EVKIT: 高效、2.2MHz、36V、双通道、Buck控制器,静态电流仅为17μA
MAX20034HFEVKIT: 高效、2.2MHz、36V、双通道、Buck控制器,静态电流仅为17μA

工具和模型

  • EE-Sim: MAX20034 设计和仿真
  • 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。

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