TEXAS INSTRUMENTS LM25119PSQE/NOPB 直流/直流控制器, 电流模式, 4.5V至42V, 2路输出, 同步降压, 750kHz, LLP-32
The is a dual Synchronous Buck Controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current-mode control utilizing an emulated current ramp. current-mode control provides inherent line feed-forward, cycle-by- cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The switching frequency is programmable from 50 to 750kHz. The LM25119 drives external high-side and low-side NMOS power switches with adaptive dead- time control. User-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator with automatic switch-over to external bias further improves efficiency.
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
电源电压DC 4.50V min
输出接口数 2
输出电压 0.8 V
输出电流 100 mA
针脚数 32
静态电流 6.00 mA
调节输出数 2
上升时间 6 ns
开关频率 750 kHz
拓扑结构 Buck
占空比 98 %
输入电压Max 42 V
输入电压Min 4.5 V
下降时间 5 ns
工作温度Max 125 ℃
工作温度Min -40 ℃
电源电压 4.5V ~ 42V
电源电压Max 42 V
电源电压Min 4.5 V
输入电压 4.5V ~ 42V
安装方式 Surface Mount
引脚数 32
封装 WQFN-32
封装 WQFN-32
工作温度 -40℃ ~ 125℃
产品生命周期 Active
包装方式 Cut Tape CT
制造应用 车用, 电源管理
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
REACH SVHC版本 2015/06/15
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM25119PSQE/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM25119PSQ/NOPB 德州仪器 | 类似代替 | LM25119PSQE/NOPB和LM25119PSQ/NOPB的区别 |
LM25119PSQX/NOPB 德州仪器 | 类似代替 | LM25119PSQE/NOPB和LM25119PSQX/NOPB的区别 |
ADP2323ACPZ-R7 亚德诺 | 功能相似 | LM25119PSQE/NOPB和ADP2323ACPZ-R7的区别 |