LMR14030-Q1 Automotive 40V, 3.5A SIMPLE SWITCHER®, 2.2MHz Step-Down Regulator with 40uA IQ | TI.com

LMR14030-Q1 (ACTIVE)

Automotive 40V, 3.5A SIMPLE SWITCHER®, 2.2MHz Step-Down Regulator with 40uA IQ

 

Description

The LMR14030-Q1 is a 40 V, 3.5 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. An extended family is available in 2 A and 5 A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. 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.

The LMR14030-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    - Device Temperature Grade 1: –40°C to 125°C
    Ambient Operating Temperature Range
    - Device HBM ESD Classification Level H1C
    - Device CDM ESD Classification Level C4A
  • 4 V to 40 V Input Range
  • 3.5 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
  • Spread Spectrum Option for Reduced EMI
  • 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
Package size: mm2:W x L (PKG)
LMR14030-Q1 LM43603-Q1 LMR16006Y-Q1 LMR23610-Q1 LMR23625-Q1 LMR23630-Q1
4     3.5     4     4     4     4    
40     36     40     36     36     36    
1     1     0.8     1     1     1    
30     28     36     34     34     34    
3.5     3     0.6     1     2.5     3    
1     1     1     1     1     1    
200     200     700     200     200     200    
2500     2200     2100     2200     2200     2200    
0.04     0.027     0.028     0.075     0.075     0.075    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Spread Spectrum
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking    
Enable
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Synchronous Rectification
Wettable Flanks Package    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
Wettable Flanks Package    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
98     99     97     99     99     99    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
Automotive     Automotive     Automotive     Automotive     Automotive     Automotive    
SO PowerPAD | 8
WSON | 10    
HTSSOP | 16     SOT-23-THIN | 6     SO PowerPAD | 8     SO PowerPAD | 8
SON | 12    
SO PowerPAD | 8
SON | 12    
Converter     Converter     Converter     Converter     Converter     Converter    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
See datasheet (WSON)    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     6SOT-23-THIN: 8 mm2: 2.8 x 2.9 (SOT-23-THIN | 6)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
See datasheet (SON)    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
See datasheet (SON)    

Design tool

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  Min   Max Range
Vin  V 4.0 to 40.0V
Vout  V 0.75 to 38V
Iout  A ≤ 3.5A
Ambient Temp  °C -40 to 125°C