This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

LM43603AQPWPRQ1 +BOM

Automotive Qualified 3.5V to 36V, 3A Synchronous Step-Down Voltage Converter

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM43603AQPWPRQ1
Datasheet:

LM43603AQPWPRQ1 Datasheet (PDF)
Series:

Automotive, AEC-Q100, SIMPLE SWITCHER®
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
EDA/CAD Models:

Request Free CAD Models for LM43603AQPWPRQ1

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

LM43603AQPWPRQ1 General Description

The LM43603-Q1 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 3 A of load current from an input voltage ranging from 3.5 V to 36 V (42 V absolute maximum). The LM43603-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 2-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, V_CC undervoltage lockout, cycle-by-cycle current limit, and output short circuit protection. The LM43603-Q1 device is available in the HTSSOP (PWP) 16-pin leaded package (6.6 mm × 5.1 mm × 1.2 mm). The LM43603A-Q1 version is optimized for PFM operation and recommended for new design. The device is pin-to-pin compatible with LM4360x and LM4600x family.

Key Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Operating Junction Temperature
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 a Pre-Biased Load
Internal Soft Start: 4.1 ms
Extendable Soft-Start Time by External Capacitor
Output Voltage Tracking Capability
Precision Enable to a Program System UVLO
Output Short Circuit Protection with Hiccup Mode
Overtemperature Thermal Shutdown Protection
Create a Custom Design Using the LM43603-Q1 With the WEBENCH^® Power Designer

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	Automotive, AEC-Q100, SIMPLE SWITCHER®
Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	3.5V
Voltage - Input (Max)	36V	Voltage - Output (Min/Fixed)	1V
Voltage - Output (Max)	28V	Current - Output	3A
Frequency - Switching	200kHz ~ 2.2MHz	Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 125°C (TJ)	Mounting Type	Surface Mount
Base Product Number	LM43603