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LM5161是一款集成高侧和低侧金属氧化物半导体场效应应晶体管(MOSFET)的100V,1A同步降压转换器。恒定导通时间控制方案无需环路补偿,支持快速瞬态响应下的高降压比。导通时间与输入电压成反比恒定的开关频率。峰谷电流限制电路可防止发生过载。欠压锁定(EN /UVLO)电路独立提供可调节输入欠电压阈值和迟滞.LM5161通过其FPWM输入引脚可选择在所有负载水平下以强制连续导通模式(CCM)运行,或在轻载或空载条件下以断续导通模式(DCM)运行。在强制CCM下运行时,LM5161支持多输出和隔离式Fly-Buck应用中,低功耗是一个关键问题。当通过编程实现DCM操作时,LM5161提供严格稳压的降压输出,无需使用任何外部纹波反馈注入电路。
所有商标均为其各自所有者的财产。
Vin (Min) (V) |
Vin (Max) (V) |
Vout (Min) (V) |
Vout (Max) (V) |
Iout (Max) (A) |
Regulated Outputs (#) |
Switching Frequency (Min) (kHz) |
Switching Frequency (Max) (kHz) |
Iq (Typ) (mA) |
Features |
Control Mode |
Duty Cycle (Max) (%) |
Operating Temperature Range (C) |
Rating |
Package Group |
LM5161 | LM5010 | LM5010A | LM5017 | LM5160A |
---|---|---|---|---|
4.5 | 8 | 6 | 7.5 | 4.5 |
100 | 75 | 75 | 100 | 65 |
2 | 2.5 | 2.5 | 1.25 | 2 |
92 | 70 | 70 | 90 | 60 |
1 | 1 | 1 | 0.65 | 2 |
1 | 1 | 1 | 1 | 1 |
50 | 50 | 50 | 50 | 50 |
1000 | 1000 | 1000 | 1000 | 1000 |
2.3 | 0.65 | 0.65 | 1.75 | 2.3 |
Enable Light Load Efficiency Synchronous Rectification UVLO Adjustable | Enable | Enable | Synchronous Rectification UVLO Adjustable | Enable Light Load Efficiency Pre-Bias Start-Up Synchronous Rectification UVLO Adjustable |
COT with emulated ripple Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) |
92 | 99 | 99 | 90 | 92 |
-40 to 125 | -40 to 125 | -40 to 150 | -40 to 125 | -40 to 125 |
Catalog | Catalog | Catalog | Catalog | Catalog |
HTSSOP | HTSSOP WSON | HTSSOP WSON | SO PowerPAD WSON | WSON |