说明
SG1524B是一款用于开关电源的脉宽调制器,其性能优于SG1524等行业标准。作为早期器件的直接引脚对引脚替换,它结合了先进的处理技术和电路设计,以提高参考精度,并在误差放大器和限流输入处扩展共模范围。直流耦合触发器消除了触发和毛刺问题,PWM数据锁存器防止边缘振荡。该电路结合了真正的数字关闭以实现高速响应,而欠压锁定电路可在电源电压过低而无法稳定运行时防止杂散输出。当Shutdown引脚用于逐脉冲限流时,全双脉冲抑制逻辑确保交替输出脉冲。SG1524B被指定在-55°C至125°C的全军事环境温度范围内运行。SG2524B的工业范围为-25°C至85°C,SG3524B的商业范围为0°C至70°C。
特性
- 7V to 40V Operation
- 5V Reference Trimmed to 1%
- 100Hz to 400kHz Oscillator Range
- Excellent External Sync Capability
- Dual 100 mA Output Transistors
- Wide Current Limit Common Mode Range DC-Coupled Toggle Flip-flop
- PWM Data Latch -Undervoltage Lockout
- Full Double-pulse Suppression Logic
- Full Double-pulse Suppression Logic
- 60V Output Collectors
参数
类型 | 描述 |
Regulator Type | HI Rel Switching Regulators |
Configuration | Voltage Mode PWMs |
Supported Topology | Push-pull, Single ended |
Supported Output | 2 |
Minimum Input Voltage (V) | 7 |
Maximum Input Voltage (V) | 40 |
Output Current (mA) Max | 100 |
Maximum Frequency (kHz) | 600 |
Operating Temperature Range (°C) | 0 to 70 |
Vref (V) | 5 |
Duty Cycle Min (%) | 0 |
Duty Cycle Max (%) | 49 |
UVLO | Yes |
Current Limit | Yes |
Output Current | 0 |
Quiescent Current (mA) typ | 5 |
Switch current (A) typ | 0 |
SHUTDOWN Current (µA) (Typ) | 0 |
# of Outputs | 0 |
Vfb (V) | 0 |



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