方案
By Technology
Converters | NCV890203
概览
NCV890203 是一款固定频率、单片降压开关稳压器，适合必须由高达 36 V 输入电源供电的汽车、与电池联接的应用。此款稳压器适用于汽车驾驶员信息系统中经常遇到的要求低噪声、体积小巧的系统。NCV890203 能够将典型的 4.5 V 到 18 V 汽车输入电压以高于敏感的 AM 频带的恒定开关频率转换为低至 3.3 V，无需成本高昂的滤波器和 EMI 应对措施。当输出正在调节时，重置引脚发出信号，还提供一个引脚调节 RSTB 信号进入高电平之前的延迟。NCV890203 还提供汽车电源系统中应具有的若干保护功能，如电流限值、短路保护和高温关断。此外，高开关频率产生低输出电压纹波，即使使用小电感值和全陶瓷输出滤波电容，从而打造出了一个节省空间的开关稳压器方案。
- Audio
- Infotainment
- Safety - Vision Systems
- Instrumentation
- Automotive
- Internal N−Channel Power Switch
- Low VIN Operation Down to 4.5 V
- High VIN Operation to 36 V
- Withstands Load Dump to 40 V
- 2 MHz Free−running Switching Frequency
- Reset with Adjustable Delay
- Logic level Enable Input Can be Directly Tied to Battery
- 2.2 A (min) Cycle−by−Cycle Peak Current Limit
- Short Circuit Protection enhanced by Frequency Foldback
- ±1.75% Output Voltage Tolerance
- Output Voltage Adjustable Down to 0.8 V
- 1.4 Millisecond Internal Soft−Start
- Thermal Shutdown (TSD)
- Low Shutdown Current
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements
- Wettable Flanks DFN (pin edge plating)
- These Devices are Pb−Free and are RoHS Compliant
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NCV890203MWTXG
Pb
A
H
P
DFN-10
1
260
REEL
3000
N
Step-Down
Current Mode
4.5
40
Adjustable
2
-
2000
Price N/A
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