MAX845：隔离型、变压器驱动器，适用于PCMCIA设计
内置功率MOSFET，节省空间，可提供750mW功率
The MAX845 provides an isolated power supply small enough to fit in thin PCMCIA cards and space-sensitive applications. It drives a low-profile center-tapped transformer primary from a 5V or 3.3V DC power supply. The secondary can be wound to provide any isolated positive or negative voltage at powers up to 750mW. The MAX845 consists of an oscillator followed by a toggle flip-flop. The flip-flop generates two 50% duty-cycle square waves, which are complementary at half the oscillator frequency (450kHz, min). These two signals drive the ground-referenced N-channel power switches. Internal circuitry ensures break-before-make action between the two switches. A low-power shutdown disables both the switches and the oscillator, reducing power consumption. An evaluation kit (MAX845EVKIT-MM) is available to evaluate low-profile 5V 40mA and 5V 100mA applications.
关键特性
| 功能框图 产品应用
|
关键参数
| Part Number | VIN (V) | VIN (V) | Driver Output Resistance (Ω) | Max. IOUT (A) | Topology | Freq. (kHz) | ICC (mA) | Package/Pins | Oper. Temp. (°C) | Budgetary Price | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | max | max | See Notes | ||||||||
| MAX845 | 2.5 | 6 | 4 | 0.2 | Push-Pull | 860 | 1.1 |
| -40 to +85 | $2.23 @1k | ||
数据手册DataSheet
| 英文 | MAX845.pdf | Rev 4; 10/1997 |
开发工具
技术资料
- Bipolar DC-Voltage Detector Offers Sensitivity and Precision
- Isolated Temperature Sensor
- Single-Wire Serial Bus Carries Isolated Power and Data
- Simple Power-FET Driver is Isolated and DC-Coupled
- Transformer-Driver IC Controls Bidirectional Switch
质量和环境数据
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX845C/D | 生产中 | DICE SALES,；NA引脚；DICE； | 参考数据资料 | ||
| MAX845ESA | 最后一次购买 | MAX845ESA+ | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX845ESA+ | 生产中 | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX845ESA+T | 生产中 | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX845ESA-T | 最后一次购买 | MAX845ESA+T | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX845ESA/GH9 | 停止供货 | MAX845ESA+ | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX845ESA/GH9-T | 生产中 | SOIC(N),；8引脚；30.9mm² | -40°C至+85°C | RoHS/无铅：否 | |
| MAX845EUA | 最后一次购买 | MAX845EUA+ | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX845EUA+ | 生产中 | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX845EUA+T | 生产中 | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| 型号 | 状况 | 推荐替代产品 | 封装：类型 引脚 占位面积封装图 编码/变更 * | 温度 | RoHS/无铅？ |
| MAX845EUA-T | 最后一次购买 | MAX845EUA+T | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：否 |
- MAX845.pdf MAX845
- MAX845.pdf MAX845
- MAX845.pdf MAX845
- Bipolar DC-Voltage Detector Offers Sensitivity and Precision MAX6143
- Isolated Temperature Sensor MAX6576
- Single-Wire Serial Bus Carries Isolated Power and Data MAX31826
- Simple Power-FET Driver is Isolated and DC-Coupled MAX845
- Transformer-Driver IC Controls Bidirectional Switch MAX845
- MAX845.pdf MAX845
- MAX845.pdf MAX845
