SIMPLE SWITCHER, 36V 2.5A Synchronous Step-Down Converter - LMR23625

LMR23625 (ACTIVE)

SIMPLE SWITCHER, 36V 2.5A Synchronous Step-Down Converter

 

Recommended alternative parts

  • LMZ14203  -  Looking for a power module? Try the LMZ14203

Sample Availability

Prototype samples are available in the WSON package (PLMR23625CFPDRRR). Order Now

Description

The LMR23625 SIMPLE SWITCHER® is an easy-to-use 36-V, 2.5-A synchronous step-down regulator. With a wide input range from 4.5 V to 36 V (HSOIC) and 4 V to 36 V (WSON), the device is suitable for various industrial application 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 it 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 fixed-frequency FPWM mode to achieve small output-voltage ripple at light load. An extended family for HSOIC is available in 1-A (LMR23610) and 3-A (LMR23630) load current options in pin-to-pin compatible packages which allows 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

  • 4.5-V to 36-V Input Range (HSOIC)
  • 4-V to 36-V Input Range (WSON)
  • 2.5-A Continuous Output Current
  • Integrated Synchronous Rectification
  • Current Mode Control
  • Minimum Switch ON Time: 60 ns
  • 2.1-MHz Switching Frequency With PFM and Forced-PWM-Mode Options (HSOIC)
  • 2.1-MHz Switching Frequency with Forced-PWM Mode Only (WSON)
  • Frequency Synchronization to External Clock
  • Internal Compensation for Ease of Use
  • 75-µA Quiescent Current at No Load
  • Soft-Start into a Pre-Biased 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

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Buck Converter (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
LMR23625 LM43603 LM53603 LM53635-Q1 LMR14030 LMR23610 LMR23615 LMR23630 LMR33630
4.5    3.5    3.5    3.5    4    4.5    4    4.5    3.8   
36    36    42    42    40    36    36    36    36   
1    1    3.2    3.2    1    1    1    1     
30    28    9.9    10    36    30    28    30    34   
2.5    3    3    3.5    3.5    1    1.5    3    3   
1    1    1    1    1    1    1    1    1   
200    200    1850    1850    200    200    200    200    400   
2200    2200    2350    2350    2500    2200    2200    2200    2100   
0.075    0.027    0.023    0.018    0.04    0.075    0.075    0.075    0.024   
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Tracking   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode   
97    99    98    98    98    97    97    97    98   
-40 to 125    -40 to 125    -40 to 125    -40 to 150    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Automotive    Catalog    Catalog    Catalog    Catalog    Catalog   
SO PowerPAD
SON   
HTSSOP
SON   
HTSSOP    VQFN-HR    SO PowerPAD    SO PowerPAD    SON    SO PowerPAD
SON   
SO PowerPAD   

Other qualified versions of LMR23625

Version Part Number Definition
Automotive LMR23625-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

WEBENCH® Designer LMR23625

  Min   Max Range
Vin  V 4.5 to 36.0V
Product Option
Vout  V 1 to 28V
Iout  A ≤ 0.2 to 2.5A
Ambient Temp  °C -40 to 125°C