LMR23630 SIMPLE SWITCHER®, 36V 3A Synchronous Step-Down Converter | TI.com

LMR23630 (ACTIVE)

SIMPLE SWITCHER®, 36V 3A Synchronous Step-Down Converter

 

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Description

The LMR23630 SIMPLE SWITCHER® is an easy-to-use 36 V, 3 A synchronous step-down regulator. With a wide input range from 4 V to 36 V, it is suitable for various industrial applications for power conditioning from unregulated sources. Peak-current-mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. A quiescent current of 75 µA makes the device suitable for battery-powered systems. An ultra-low 2 µA shutdown current can further prolong battery life. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components. The device has an option for constant frequency FPWM mode to achieve small output-voltage ripple at light load. An extended family (HSOIC) is available in 1-A (LMR23610) and 2.5-A (LMR23625) load-current options in a pin-to-pin compatible package allowing simple, optimum PCB layout. A precision enable input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown due to excessive power dissipation.

Features

  • 4-V to 36-V Input Range
  • 3-A Continuous Output Current
  • Integrated Synchronous Rectification
  • Current-Mode Control
  • Minimum Switch On-Time: 60 ns
  • Internal Compensation for Ease of Use
  • 400-kHz Switching Frequency and Adjustable Frequency Options
  • PFM and Forced PWM Mode Options
  • Frequency Synchronization to External Clock
  • 75-µA Quiescent Current at No Load for PFM Option
  • Soft Start into a Prebiased Load
  • High Duty-Cycle Operation Supported
  • Precision Enable Input
  • Output Short-Circuit Protection With Hiccup Mode
  • Thermal Protection
  • 8-Pin HSOIC with PowerPAD™ Package
  • 12-Pin WSON Wettable Flanks Package with PowerPAD™
  • Create a Custom Design Using the LMR23625 With the WEBENCH® Power Designer

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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)
LMR23630 LM2575-N LM2576 LM2596 LM43602 LM43603 LMR14030 LMR33620 LMR33630 TPS5430 TPS54340
4.5     4     4     4.5     3.5     3.5     4     3.8     3.8     5.5     4.5    
36     40     40     40     36     36     40     36     36     36     42    
1     3.3     3.3     3.3     1     1     1     1     1     1.23     0.8    
30     37     37     37     28     28     36     34     34     31     41    
3     1     3     3     2     3     3.5     2     3     3     3.5    
1     1     1     1     1     1     1     1     1     1     1    
200     42     42     110     200     200     200     400     400     500     100    
2200     63     63     173     2200     2200     2500     2100     2100     500     2500    
0.075     10     5     5     0.027     0.027     0.04     0.024     0.024     3     0.146    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Wettable Flanks Package    
Enable
Over Current Protection    
Enable
Over Current Protection    
Enable
Over Current Protection    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Wettable Flanks Package    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Enable
Over Current Protection    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
UVLO Adjustable    
Current Mode     Voltage Mode     Voltage Mode     Voltage Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Voltage Mode     Current Mode    
97     98