MAX15059

76V、300mW boost转换器和电流监测器,用于APD偏置

高压boost转换器和电流监测器,降低雪崩二极管应用的成本和电路板空间


点击查看特定型号的库存状况。

说明

MAX15059固定频率脉宽调制(PWM)升压型DC-DC转换器集成内置开关和能够高速调节限流的高边电流监测器。该器件能够输出高达76V的电压(MAX15059A输出功率可达300mW,MAX15059B输出功率可达200mW),监测电流高达4mA。MAX15059采用2.8V至5.5V电源供电。

固定频率(400kHz)电流模式PWM架构提供低噪声输出电压,易于滤波。内置高压功率MOSFET允许器件提供高达76V的输出电压。内部软启动电路可有效抑制boost转换器开启时的输入电流,MAX15059具有关断模式,有助于降低功耗。

MAX15059提供1000倍的电流监测动态范围,能够以极高精度检测500nA至4mA范围的电流。电阻可调节限流保护电路能够在光功率瞬变时有效保护APD。钳位二极管能够在过压条件下保护监测器输出。其它保护功能包括:boost转换器开关的逐周期电流限制、欠压闭锁(UVLO)和管芯温度达到+125°C时的热关断。

MAX15059提供增强散热的16引脚TQFN-EP无铅封装,工作在-40°C至+125°C温度范围。
MAX15059:典型工作电路 MAX15059:典型工作电路 放大+

关键特性

  • 输入电压范围:+2.8V至+5.5V
  • 较宽的输出电压范围:(VIN + 5V)至76V
  • 内部1Ω (典型值) 80V MOSFET
  • Boost转换器输出功率:300mW
  • 提供200mW器件,允许使用小尺寸电感
  • 高精度±5% (1:1和5:1)高边电流检测
  • 可通过电阻快速调节APD限流(1µs响应时间)
  • 漏极开路限流指示
  • 400kHz固定开关频率
  • 固定PWM频率易于滤波,适用于低噪声设计
  • 内部软启动
  • 2µA (最大值)关断电流
  • -40°C至+125°C温度范围
  • 微小的增强散热型3mm x 3mm、16引脚TQFN-EP无铅封装

应用

  • 雪崩光电二极管偏置和监测电路
  • FBON模块
  • GPON模块
  • 低噪声变容二极管偏置电源
  • PIN二极管偏置电源
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeICC
(mA)
Shutdown Mode Supply Current
(µA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxtyptypmaxSee Notes
MAX15059 2.85.58760.005
Resistor
Voltage
Internal0.60.00321400
TQFN/16
$1.97 @1k
查看所有Step-Up Switching Regulators (96)
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。


MAX15059EVKIT: MAX15059A和MAX15059B评估板

技术资料

设计指南 660 Regulator Topologies for Battery-Powered Systems

质量和环境数据

产品可靠性报告: MAX15059.pdf 
无铅封装的锡(Sn)晶须报告
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 >

 
Status:
Package:
Temperature:

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