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说明
MIC261203-ZA是一款具有独特自适应导通时间控制架构的恒定频率同步降压调节器。MIC261203-ZA在4.5V至28V的输入电源范围内工作，并提供高达12A的输出电流的调节输出。输出电压可调至0.6V，保证精度为±1%，设备的开关频率为600kHz。
Hyper Speed Control™架构可实现超快速瞬态响应，同时降低输出电容，还可实现高V在低VOUT操作可能。这种自适应t在纹波控制结构将固定频率操作和快速瞬态响应的优点结合在单个设备中。
MIC261203-ZA提供全套功能，确保在故障条件下对IC进行保护。其中包括确保在功率暂降条件下正常运行的欠压锁定、减少涌入电流的内部软启动、折返电流限制、打嗝模式短路保护和热停堆。提供了一个开漏极电源良好（PG）引脚。
特性
- Hyper Speed Control™ architecture enables
- High Delta V operation (VIN = 28V and VOUT = 0.6V)
- Small output capacitance
- 4.5V to 28V voltage input
- 12A output current capability and 95% peak efficiency
- Adjustable output from 0.6V to 5.5V
- ±1% feedback accuracy
- Any Capacitor™ stable - zero-to-high ESR
- 600kHz switching frequency
- No external compensation
- Power Good (PG) output
- Foldback I-limit and "hiccup" mode short-circuit protection
- Supports safe startup into a pre-biased load
- -40°C to +125°C junction temperature range
- Available in 28-pin 5mm — 6mm QFN package
参数
类型 | 描述 |
Regulator Type | Step Down (Buck) |
Supported Output | 0 |
Minimum Input Voltage (V) | 0 |
Maximum Input Voltage (V) | 28 |
Output Current (mA) Max | 0 |
Maximum Frequency (kHz) | 0 |
Vref (V) | 0 |
Duty Cycle Min (%) | 0 |
Duty Cycle Max (%) | 0.82 |
Switching Frequency (kHz) | 600 |
Input Voltage Range Min | 4.5 |
Input Voltage Range Max | 28 |
Output Current | 12000 |
Temp Range Min | -40 |
Temp Range Max | 125 |
Vout Min (V) | 0.6 |
Vout Max (V) | 5.5 |
Quiescent Current (mA) typ | 0.73 |
Light Load Efficiency Mode | No |
Switch current (A) typ | 0 |
Automotive Rated | No |
SHUTDOWN Current (µA) (Typ) | 5 |
# of Outputs | 1 |
Vfb (V) | 0.6 |
Synchronous Rectifier | Yes |
