TPS54040A 具有 Eco-Mode 的 3.5 至 42V 输入、0.5A 降压转换器

描述

TPS54040A器件是一款42V，0.5A，降压稳压器，此稳压器具有一个集成的高侧MOSFET。电流模式控制提供了解单的低纹波脉冲跳跃模式将无负载，经调节的输入电源电流减少至116μA。通过使用使能引脚，当它为低电平时，关断电源电流降标称值为1.3μA。

欠压闭锁在内部设定为2.5V，但可采用使能引脚将之提高。输出电压启动斜坡受控于缓慢起动引脚，该引脚还可被配置用来控制电源排序或者跟踪。开漏电源状态良好信号表示输出处于其标称电压的94％至107％之内。

宽广的开关频率范围使得能够对效率及外部组件尺寸进行优化。频率折返和热关断功能在过载情况下对部件实施保护。


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

TPS54040A	TPS54140A	TPS54240	TPS54340	TPS54341	TPS54540	TPS54541
3.5	3.5	3.5	4.5	4.5	4.5	4.5
42	42	42	42	42	42	42
0.8	0.8	0.8	0.8	0.8	0.8	0.8
39	39	39	41	41	41.1	41
0.5	1.5	2.5	3.5	3.5	5	5
1	1	1	1	1	1	1
100	100	100	100	100	100	100
2500	2500	2500	2500	2500	2500	2500
0.116	0.116	0.138	0.146	0.152	0.146	0.152
Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable	Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable	Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable	Enable Frequency Synchronization Light Load Efficiency UVLO Adjustable	Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable	Enable Frequency Synchronization Light Load Efficiency UVLO Adjustable	Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable
Current Mode	Current Mode	Current Mode	Current Mode	Current Mode	Current Mode	Current Mode
98	98	98	98	98	98	98
-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 125	-40 to 85
Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
MSOP-PowerPAD VSON	MSOP-PowerPAD VSON	MSOP-PowerPAD VSON	SO PowerPAD	WSON	SO PowerPAD	WSON

数据手册（1）

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