TPS54240 (正在供货)

具有 Eco-Mode 的 3.5V 至 42V 输入、2.5A 降压转换器

具有 Eco-Mode 的 3.5V 至 42V 输入、2.5A 降压转换器 - TPS54240
数据表
 

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描述

The TPS54240 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple, pulse skip mode reduces the no load, regulated output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but it can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and optimization of external component size. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54240 is available in 10-pin, thermally-enhanced HVSSOP and 10-pin 3-mm × 3-mm PowerPAD package.

特性

  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a
    Pulse Skipping Eco-Mode™
  • 138-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm
    VSON Packages with PowerPAD™
  • Supported by WEBENCH® Software Tool

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参数 与其它产品相比 降压转换器 (集成开关)

 
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
TPS54240 TPS54040A TPS54140A TPS54240-Q1 TPS54340 TPS54341 TPS54540 TPS54541
3.5    3.5    3.5    3.5    4.5    4.5    4.5    4.5   
42    42    42    42    42    42    42    42   
0.8    0.8    0.8    0.8    0.8    0.8    0.8    0.8   
39    39    39    39    41    41    41.1    41   
2.5    0.5    1.5    2.5    3.5    3.5    5    5   
1    1    1    1    1    1    1    1   
100    100    100    100    100    100    100    100   
2500    2500    2500    2500    2500    2500    2500    2500   
0.138    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
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    Current Mode   
98    98    98    100    98    98    98    98   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85    -40 to 125    -40 to 85   
      Automotive           
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
SO PowerPAD    WSON    SO PowerPAD    WSON   

其它合格版本 TPS54240

版本 器件型号 定义
汽车电子 TPS54240-Q1 Q100 适用于追求零缺陷的高可靠性汽车电子应用的器件
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WEBENCH® Designer TPS54240

  最小   最大 范围
输入电压  V 3.5 to 42.0V
输出电压  V 0.8 to 39V
输出电流  A ≤ 2.5A
环境温度  °C -40 to 125°C


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