LMR23615-Q1 SIMPLE SWITCHER® 36-V, 1.5-A Synchronous Step-Down Converter | TI.com

LMR23615-Q1 (ACTIVE)

SIMPLE SWITCHER® 36-V, 1.5-A Synchronous Step-Down Converter

 

Description

The LMR23615-Q1 SIMPLE SWITCHER® is an easy-to-use 36 V, 1.5 A synchronous step-down regulator. With a wide input range from 4 V to 36 V, the device is suitable for various applications from industrial to automotive 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.

An extended family is available in 2.5-A (LMR23625-Q1) and 3-A (LMR23630-Q1) load-current options in pin-to-pin compatible packages 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

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4A
  • 4-V to 36-V Input Range
  • 1.5-A Continuous Output Current
  • Integrated Synchronous Rectification
  • 60-ns Minimum Switch-On Time
  • Internal Compensation for Ease of Use
  • Adjustable Switching Frequency
  • PFM Mode at Light Load
  • Frequency Synchronization to External Clock
  • Soft Start into a Prebiased Load
  • High Duty-Cycle Operation Supported
  • Output Short-Circuit Protection With Hiccup Mode
  • 12-Pin WSON Wettable Flanks Package with PowerPAD™
  • Create a Custom Design Using the LMR23615-Q1 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)
LMR23615-Q1 LM22672-Q1 LM43601-Q1 LM43602-Q1 LMR14020-Q1 LMR23625-Q1 LMR23630-Q1
4     4.5     3.5     3.5     4     4     4    
36     42     36     36     40     36     36    
1     1.285     1     1     0.8     1     1    
28     37     28     28     28     34     34    
1.5     1     1     2     2     2.5     3    
1     1     1     1     1     1     1    
200     200     200     200     200     200     200    
2200     1000     2200     2200     2500     2200     2200    
0.075     3.4     0.033     0.027     0.04     0.075     0.075    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Wettable Flanks Package    
Enable
Frequency Synchronization
Over Current Protection    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Spread Spectrum
Tracking
UVLO Adjustable    
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     Voltage Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
97     90     99     99     98     99     99    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
Automotive     Automotive     Automotive     Automotive     Automotive     Automotive     Automotive    
SON | 12     SO PowerPAD | 8     HTSSOP | 16     HTSSOP | 16     SO PowerPAD | 8
WSON | 10    
SO PowerPAD | 8
SON | 12    
SO PowerPAD | 8
SON | 12    
Converter     Converter     Converter     Converter     Converter     Converter     Converter    
See datasheet (SON)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
See datasheet (WSON)    
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)