LMR14050 40V, 5A SIMPLE SWITCHER, 2.2MHz Step-Down Regulator with 40μA IQ | TI.com

LMR14050 (ACTIVE)

40V, 5A SIMPLE SWITCHER, 2.2MHz Step-Down Regulator with 40μA IQ

 

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Description

The LMR14050 is a 40 V, 5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

Features

  • 4 V to 40 V Input Range
  • 5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package

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Parametrics Compare all products in Buck converters (integrated switch)

 
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
Type
LMR14050 LMR14006 LMR14010A LMR14020 LMR14030 TPS560430
4     4     4     4     4     4    
40     40     40     40     40     36    
1     0.8     0.8     1     1     1    
36     30     30     36     36     24    
5     0.6     1     2     3.5     0.6    
1     1     1     1     1     1    
200     1100     550     200     200     1100    
2500     2100     850     2500     2500     2100    
0.04     0.028     0.03     0.04     0.04     0.08    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Light Load Efficiency
Pre-Bias Start-Up
UVLO Adjustable    
Enable
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
98     97     96     98     98     98    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
SO PowerPAD | 8     SOT-23-THIN | 6     SOT-23-THIN | 6     SO PowerPAD | 8     SO PowerPAD | 8     SOT-23 | 6    
Converter     Converter     Converter     Converter     Converter     Converter    

Design tool

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WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LMR14050

  Min   Max Range
Vin  V 4.0 to 40.0V
Vout  V 0.75 to 38V
Iout  A ≤ 5A
Ambient Temp  °C -40 to 125°C


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