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LM43602DSUR

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Texas Instruments

3.5V TO 36V, 2A SYNCHRONOUS STEP-DOWN VOLTAGE CONVERTER

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VSON (DSU)
Integrated Circuits (ICs)

LM43602DSUR

Active
Texas Instruments

3.5V TO 36V, 2A SYNCHRONOUS STEP-DOWN VOLTAGE CONVERTER

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
Supplier Device Package16-SON (4x5)
Synchronous RectifierTrue
TopologyBuck
Voltage - Input (Max) [Max]36 V
Voltage - Input (Min) [Min]3.5 V
Voltage - Output (Max)28 V
Voltage - Output (Min/Fixed)1 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyCut Tape (CT) 1$ 4.99
Digi-Reel® 1$ 4.99
Tape & Reel (TR) 3000$ 2.50
Texas InstrumentsLARGE T&R 1$ 3.76
100$ 3.30
250$ 2.31
1000$ 1.86

Description

General part information

LM43602-Q1 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.

Documents

Technical documentation and resources

Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)

Application note

Understanding and Applying Current-Mode Control Theory

Application note

Input and Output Capacitor Selection

Application note

LM43602 3.5-V to 36-V, 2-A Synchronous Step-Down Voltage Converter datasheet (Rev. C)

Data sheet

Buck Converter Quick Reference Guide (Rev. B)

Selection guide

AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)

Application note

AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)

Application note

AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)

Application note

Semiconductor and IC Package Thermal Metrics (Rev. D)

Application note

AN-1197 Selecting Inductors for Buck Converters (Rev. B)

Application note

Differences Between LM4600x/LM4360x A and Non-A OPNs

Application note

Synchronous Rectification in High-Performance Power Converter Design (Rev. A)

White paper

LM43602 EVM User's Guide

EVM User's guide

Thermal Design Made Simple With LM43603 and LM46002

Application note

AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B)

Application note

Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)

Application note

AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)

Application note

AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)

Application note

AN-643 EMI/RFI Board Design (Rev. B)

Application note

SIMPLE SWITCHER Synchronous Regulator Series (Rev. B)

More literature

AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)

Application note

Inverting made simple by unleashing the buck

Technical article

Compensation Made SIMPLE With LM4360x, LM4600x

Application note

How to control turn on/off thresholds in voltage regulators using a logic level UV

Technical article

Automotive Line Transient Protection Circuit

Application note

Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B)

Application note

AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)

Application note

AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

Application note