MAX1522

简单的SOT23封装boost控制器


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说明

The MAX1522/MAX1523/MAX1524 are simple, compact boost controllers designed for a wide range of DC-DC conversion topologies, including step-up, SEPIC, and flyback applications. They are for applications where extremely low cost and small size are top priorities. These devices are designed specifically to provide a simple application circuit and minimize the size and number of external components, making them ideal for PDAs, digital cameras, and other low-cost consumer electronics applications.

These devices use a unique fixed on-time, minimum off-time architecture, which provides excellent efficiency over a wide-range of input/output voltage combinations and load currents. The fixed on-time is pin selectable to either 0.5µs (50% max duty cycle) or 3µs (85% max duty cycle), permitting optimization of external component size and ease of design for a wide range of output voltages.

The MAX1522/MAX1523 operate from a +2.5V to +5.5V input voltage range and are capable of generating a wide range of outputs. The MAX1524 is intended for bootstrapped operation, permitting startup with lower input voltage. All devices have internal soft-start and short-circuit protection to prevent excessive switching current during startup and under output fault conditions. The MAX1522/MAX1524 have a latched fault mode, which shuts down the controller when a short-circuit event occurs, whereas the MAX1523 reenters soft-start mode during output fault conditions. The MAX1522/MAX1523/MAX1524 are available in a space-saving 6-pin SOT23 package.
MAX1522、MAX1523、MAX1524:典型工作电路 MAX1522、MAX1523、MAX1524:典型工作电路 放大+

关键特性

  • Simple, Flexible Application Circuit
  • 2-Cell NiMH or Alkaline Operation (MAX1524)
  • Low Quiescent Current (25µA typ)
  • Output Fault Protection and Soft-Start
  • High Efficiency Over 1000:1 IOUT Range
  • Pin-Selectable Maximum Duty Factor
  • Micropower Shutdown Mode
  • Small 6-Pin SOT23 Package
  • No Current-Sense Resistor

应用

  • 工业+24V和+28V供电电源
  • LCD偏置电源
  • 低成本电池供电应用
  • 低成本、大电流或高电压升压转换器
  • 低成本、多输出反激式转换器
  • SEPIC转换器

请查看具体的参数规格 Step-Up Switching Regulators (101)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Switch TypeOper. Freq.
(kHz)
FeaturesPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX1522 2.55.52.51001External1000
Fixed Freq./PWM
Output UVP
SOT23/6
$1.12 @1k
MAX1523 
SOT23/6
$1.69 @1k

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。

MAX1522EVKIT: MAX1522、MAX1523、MAX1524评估板
MAX1523EVKIT: MAX1522、MAX1523、MAX1524评估板
MAX1524EVKIT: MAX1522、MAX1523、MAX1524评估板
申请可靠性报告: MAX1522 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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