数据手册：MAX16935 3.5A, 36V, 2MHz Automotive Buck Converter with Low IQ and EMI Management .pdf [英文Rev.2(PDF,1.2MB)]
{状况：生产中。}
The MAX16935 is a 3.5A current-mode step-down converter with integrated high-side and low-side MOSFETs designed to operate with an external Schottky diode for better efficiency. The low-side MOSFET enables fixed-frequency forced-PWM (FPWM) operation under light-load applications. The device operates with input voltages from 3.5V to 36V, while using only 28µA quiescent current at no load. The switching frequency is resistor programmable from 220kHz to 2.2MHz and can be synchronized to an external clock. The device’s output voltage is available as 5V fixed or adjustable from 1V to 10V. The wide input voltage range along with its ability to operate at 98% duty cycle during undervoltage transients make the device ideal for automotive and industrial applications.
Under light-load applications, the FSYNC logic input allows the device to either operate in skip mode for reduced current consumption or fixed-frequency FPWM mode to eliminate frequency variation to minimize EMI. Fixed-frequency FPWM mode is extremely useful for power supplies designed for RF transceivers where tight emission control is necessary. Protection features include cycle-by-cycle current limit and thermal shutdown with automatic recovery. Additional features include a power-good monitor to ease power-supply sequencing and a 180° out-of-phase clock output relative to the internal oscillator at SYNCOUT to create cascaded power supplies with multiple devices.
The device operates over the -40°C to +125°C automotive temperature range and is available in a 16-pin TSSOP-EP package.
产品关键特性
- Wide 3.5V to 36V Input Voltage Range (42V Tolerant)
- Integrated 3.5A High-Side Switch
- Enhanced Current-Mode Control Architecture
- Fixed Output Voltage with ±2% Accuracy (5V) or Externally Resistor Adjustable (1V to 10V)
- 220kHz to 2.2MHz Switching Frequency with Three Operation Modes
- 28µA Ultra-Low Quiescent Current Skip Mode
- Forced Fixed-Frequency Operation
- External Frequency Synchronization
- Spread-Spectrum Frequency Modulation
- Automatic LX Slew Rate Adjustment for Optimum Efficiency Across Operating Frequency Range
- 180° Out-of-Phase Clock Output at SYNCOUT
- Low-BOM-Count Current-Mode Control Architecture
- Power-Good Output
- Enable Input Compatible from 3.3V Logic Level to 42V
- Thermal Shutdown Protection
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
| 应用与使用范围
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Typical Application Circuit
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX16935RAUE/V+ | 生产中 | TSSOP；16引脚；TSSOP；封装信息 | -40°C至+125°C | 参考数据资料 |
| MAX16935RAUE/V+T | 生产中 | TSSOP；16引脚；TSSOP；封装信息 | -40°C至+125°C | 参考数据资料 |
| MAX16935SAUE/V+ | 生产中 | TSSOP；16引脚；TSSOP；封装信息 | -40°C至+125°C | 参考数据资料 |
| MAX16935SAUE/V+T | 生产中 | TSSOP；16引脚；TSSOP；封装信息 | -40°C至+125°C | 参考数据资料 |
功能接近器件
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