汽车级 3-42V 宽输入电压、电流模式非同步降压/升压控制器 20-HTSSOP -40 to 125
The LM25118-Q1 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high-performance, cost-efficient Buck-Boost regulator using a minimum of external components. The Buck-Boost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage making it especially suitable for automotive applications. The LM25118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dual-mode approach maintains regulation over a wide range of input voltages with optimal conversion efficiency in the buck mode and a glitch-free output during mode transitions. This easy-to-use controller includes drivers for the high-side buck MOSFET and the low-side boost MOSFET. The control method of the regulator is based upon current mode control using an emulated current ramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of the very small duty cycles necessary in high input voltage applications. Additional protection features include current limit, thermal shutdown, and an enable input. The device is available in a power-enhanced, 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.
输出接口数 1
输出电压 1.23V ~ 38V
输出电流 4 A
静态电流 4.50 mA
调节输出数 1
开关频率 500kHz MAX
输入电压Max 42 V
输入电压Min 3 V
最大占空比 0.75
工作温度Max 125 ℃
工作温度Min -40 ℃
输入电压 3V ~ 42V
安装方式 Surface Mount
引脚数 20
封装 HTSSOP-20
封装 HTSSOP-20
工作温度 -40℃ ~ 125℃ TJ
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM25118Q1MHX/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM25118Q1MHE/NOPB 德州仪器 | 完全替代 | LM25118Q1MHX/NOPB和LM25118Q1MHE/NOPB的区别 |
LM25118Q1MH/NOPB 德州仪器 | 类似代替 | LM25118Q1MHX/NOPB和LM25118Q1MH/NOPB的区别 |