LM46002 3.5V to 60V, 2A Synchronous Step-Down Voltage Converter | TI.com

LM46002 (ACTIVE)

3.5V to 60V, 2A Synchronous Step-Down Voltage Converter

3.5V to 60V, 2A Synchronous Step-Down Voltage Converter - LM46002
 

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Description

The LM46002 SIMPLE SWITCHER® regulator is an easy to use synchronous step-down DC-DC converter capable of driving up to 2 A of load current from an input voltage ranging from 3.5 V to 60 V. The LM46002 provides exceptional efficiency, output accuracy and drop-out voltage in a very small solution size. An extended family is available in various load current options and 36 V maximum input voltage in pin-to-pin compatible packages, including LM46001, LM46000, LM43603, LM43602, LM43601 and LM43600. Peak current mode control is employed to achieve simple control loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft-start, extendable soft-start, and tracking provide a flexible and easy to use platform for a wide range of applications. Discontinuous conduction and automatic frequency reduction at light loads improve light load efficiency. The family requires few external components. Pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC under-voltage lockout, cycle-by-cycle current limit, and output short circuit protection. The LM46002 device is available in the HTSSOP / PWP 16 leaded package (5.1 mm x 6.6 mm x 1.2 mm) with 0.65 mm lead pitch.

Features

  • 27 µA Quiescent Current in Regulation
  • High Efficiency at Light Load (DCM and PFM)
  • Meets EN55022/CISPR 22 EMI standards
  • Integrated Synchronous Rectification
  • Adjustable Frequency Range: 200 kHz to 2.2 MHz (500 kHz default)
  • Frequency Synchronization to External Clock
  • Internal Compensation
  • Stable with Almost Any Combination of Ceramic, Polymer, Tantalum, and Aluminum Capacitors
  • Power-Good Flag
  • Soft-Start into Pre-Biased Load
  • Internal Soft-Start: 4.1 ms
  • Extendable Soft-Start Time by External Capacitor
  • Output Voltage Tracking Capability
  • Precision Enable to Program System UVLO
  • Output Short Circuit Protection with Hiccup Mode
  • Over Temperature Thermal Shutdown Protection

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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
LM46002 LM46001 LM76002 LMR16020 LMR16030 LMR36015
3.5     3.5     3.5     4.3     4.3     4.2    
60     60     60     60     60     60    
1     1     1     1     1     1    
28     28     57     50     50     57    
2     1     2.5     2     3     1.5    
1     1     1     1     1     1    
200     200     300     200     200     400    
2200     2200     2200     2500     2500     1000    
0.027     0.024     0.015     0.04     0.04     0.023    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Tracking
UVLO Adjustable    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Power Good
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
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
99     99       98     98     98    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 150    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
HTSSOP     HTSSOP     WQFN     SO PowerPAD     SO PowerPAD     VQFN-HR    

Other qualified versions of LM46002

Version Part Number Definition
Automotive LM46002-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
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Coming Soon!
WEBENCH® Power Designer is now even easier to use. Learn more.

WEBENCH® Designer LM46002

  Min   Max Range
Vin  V 3.5 to 60.0V
Vout  V 1.011 to 28V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C


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