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数据: LM25085 / -Q1 42V Constant On-Time PFET Buck Switching Controller 数据表
LM25085是一款高效PFET开关稳压控制器,可用于快速,轻松地开发小型,高效的降压稳压器,适用于各种应用。该高压控制器包含一个PFET栅极驱动器和一个高压偏置调节器,可在4.5V至42V的宽输入范围内工作。恒定的导通时间调节原理不需要环路补偿,简化了电路实现,并产生超快的负载瞬态响应。由于输入电压和导通时间之间的反比关系,工作频率几乎保持恒定,线路和负载变化。 PFET架构允许100%占空比工作,以实现低压差。 PFET的R DS(ON)或外部检测电阻可用于检测过流检测电流。
Vin (Min) (V) |
Vin (Max) (V) |
Vout (Min) (V) |
Vout (Max) (V) |
Iout (Max) (A) |
Regulated Outputs (#) |
Number of Phases |
Switching Frequency (Min) (kHz) |
Switching Frequency (Max) (kHz) |
Iq (Typ) (mA) |
Features |
Duty Cycle (Max) (%) |
Operating Temperature Range (C) |
Rating |
Package Group |
Control Mode |
LM25085 | LM25085-Q1 | LM25085A | LM5085 | LM5085-Q1 |
---|---|---|---|---|
4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
42 | 42 | 42 | 75 | 75 |
1.25 | 1.25 | 0.9 | 1.25 | 1.25 |
42 | 42 | 42 | 75 | 75 |
10 | 10 | 10 | 10 | 10 |
1 | 1 | 1 | 1 | 1 |
1 | 1 | 1 | 1 | 1 |
50 | 50 | 50 | 50 | 50 |
1000 | 1000 | 1000 | 1000 | 1000 |
1.25 | 1.25 | 1.25 | 1.3 | 1.3 |
Adjustable Current Limit Frequency Synchronization | Adjustable Current Limit Frequency Synchronization | Adjustable Current Limit Frequency Synchronization | Adjustable Current Limit Enable Frequency Synchronization | Adjustable Current Limit Enable Frequency Synchronization |
100 | 100 | 100 | 100 | 100 |
-40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
Catalog | Automotive | Catalog | Catalog | Automotive |
MSOP-PowerPAD VSSOP WSON | MSOP-PowerPAD | MSOP-PowerPAD VSSOP WSON | MSOP-PowerPAD VSSOP WSON | MSOP-PowerPAD |
Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) |