MAX1522：简单的SOT23封装boost控制器
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.
关键特性
| MAX1522、MAX1523、MAX1524：典型工作电路 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1522-MAX1524.pdf | Rev 1; 08/2010 |
关键参数
| Part Number | VIN (V) | VIN (V) | VOUT1 (V) | VOUT1 (V) | IOUT1 (A) | Output Adjust. Method | Switch Type | ICC (mA) | Shutdown Mode Supply Current (µA) | Shutdown Mode Supply Current (µA) | DC-DC Outputs | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | max | typ | typ | max | See Notes | ||||||
| MAX1522 | 2.5 | 5.5 | 2.5 | 100 | 10 | Resistor | External | 0.025 | 0.001 | 1 | 1 | 1000 | SOT/6 | $1.07 @1k |
| MAX1523 | 2.5 | 100 | 0.95 | SOT/6 | $1.61 @1k | |||||||||
| MAX1524 | 1.5 | 5 | 10 | SOT/6 | $1.07 @1k | |||||||||
开发工具
技术资料
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订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX1522EUT+ | 生产中 | SOT,；6引脚；9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1522EUT+T | 生产中 | SOT,；6引脚；9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1522EUT-T | 停止供货 | MAX1522EUT+T | SOT,；6引脚；9mm² | -40°C至+85°C | RoHS/无铅：否 |
- MAX1522-MAX1524.pdf MAX1524
