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LM43602DSUR

LM43602DSUR

Active
Texas Instruments

SWITCHING VOLTAGE REGULATORS 3.5V TO 36V 2A SYNC HRONOUS STEP-DOWN VO A 595-LM43602DSUT

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LM43602DSUR

LM43602DSUR

Active
Texas Instruments

SWITCHING VOLTAGE REGULATORS 3.5V TO 36V 2A SYNC HRONOUS STEP-DOWN VO A 595-LM43602DSUT

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Description

General part information

LM43602 Series

The LM43602-Q1 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 36 V (42 V abs maximum). The LM43602-Q1 provides exceptional efficiency, output accuracy and dropout voltage in a very small solution size. An extended family is available in 0.5-A , 1-A, and 3-A load current options in pin-to-pin compatible packages. 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 modulation at light loads improve light load efficiency. The family requires few external components and pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCCundervoltage lockout, cycle-by-cycle current limit, and output short-circuit protection. The LM43602-Q1 device is available in the HTSSOP (PWP) 16-pin leaded package (6.6 mm × 5.1 mm × 1.2 mm).The LM43602A-Q1 version is optimized for PFM operation and recommended for new designs. The device is pin-to-pin compatible with LM4360x and LM4600x family.

The LM43602-Q1 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 36 V (42 V abs maximum). The LM43602-Q1 provides exceptional efficiency, output accuracy and dropout voltage in a very small solution size. An extended family is available in 0.5-A , 1-A, and 3-A load current options in pin-to-pin compatible packages. 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 modulation at light loads improve light load efficiency. The family requires few external components and pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCCundervoltage lockout, cycle-by-cycle current limit, and output short-circuit protection. The LM43602-Q1 device is available in the HTSSOP (PWP) 16-pin leaded package (6.6 mm × 5.1 mm × 1.2 mm).The LM43602A-Q1 version is optimized for PFM operation and recommended for new designs. The device is pin-to-pin compatible with LM4360x and LM4600x family.

Technical Specifications

Parameters and characteristics for this part

SpecificationLM43602DSUR
Current - Output2 A
Frequency - Switching (Max)2.2 MHz
Frequency - Switching (Min)200 kHz
FunctionStep-Down
Mounting TypeWettable Flank, Surface Mount
Number of Outputs1
Operating Temperature (Max)125 °C
Operating Temperature (Min)-40 °C
Output ConfigurationPositive
Output TypeAdjustable
Package / Case16-VFDFN Exposed Pad
Package Length4 mm
Package Name16-SON
Package Width5 mm
Synchronous RectifierYes
TopologyBuck
Voltage - Input (Max)36 V
Voltage - Input (Min)3.5 V
Voltage - Output (Max)28 V
Voltage - Output (Min/Fixed)1 V

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)
Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B)
AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)
Differences Between LM4600x/LM4360x A and Non-A OPNs
LM43602 3.5-V to 36-V, 2-A Synchronous Step-Down Voltage Converter datasheet (Rev. C)
Input and Output Capacitor Selection
Compensation Made SIMPLE With LM4360x, LM4600x
Semiconductor and IC Package Thermal Metrics (Rev. D)
AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)
SIMPLE SWITCHER Synchronous Regulator Series (Rev. B)
Inverting made simple by unleashing the buck
How to control turn on/off thresholds in voltage regulators using a logic level UV
AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)
LM43602 EVM User's Guide
Automotive Line Transient Protection Circuit
AN-643 EMI/RFI Board Design (Rev. B)
Synchronous Rectification in High-Performance Power Converter Design (Rev. A)
AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)
AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)
AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)
AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)
Buck Converter Quick Reference Guide (Rev. B)
Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)
AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B)
AN-1197 Selecting Inductors for Buck Converters (Rev. B)
Understanding and Applying Current-Mode Control Theory
AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)
Thermal Design Made Simple With LM43603 and LM46002