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LMR33630CQRNXRQ1

3.8-V to 36-V, 3-A synchronous step-down voltage converter

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LMR33630CQRNXRQ1
Datasheet:

LMR33630CQRNXRQ1 Datasheet (PDF)
Series:

Automotive, AEC-Q100
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
EDA/CAD Models:

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LMR33630CQRNXRQ1 General Description

The LMR33630-Q1 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged applications. The LMR33630-Q1 drives up to 3 A of load current from an input of up to 36 V. The LMR33630-Q1 provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33630-Q1 automatically folds back frequency at light load to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR33630-Q1 is available in a 12-pin 3 mm × 2 mm next generation VQFN package with wettable flanks.

Key Features

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
Configured for rugged automotive applications
- Input voltage range: 3.8 V to 36 V
- Output voltage range: 1 V to 24 V
- Output current: 3 A
- 75-mΩ/50-mΩ R_DS-ON power MOSFETs
- Peak-current-mode control
- Short minimum on-time of 68 ns
- Frequency: 400 kHz, 1.4 MHz, 2.1 MHz
- Integrated compensation network
Low EMI and switching noise
- HotRod™ package
- Parallel input current paths
High power conversion at all loads
- Peak efficiency > 95%
- Low shutdown quiescent current of 5 µA
- Low operating quiescent current of 25 µA
Create a custom design using the LMR33630-Q1 with the WEBENCH Power Designer

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	Automotive, AEC-Q100
Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	3.8V
Voltage - Input (Max)	36V	Voltage - Output (Min/Fixed)	1V
Voltage - Output (Max)	24V	Current - Output	3A
Frequency - Switching	2.1MHz	Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 125°C (TA)	Mounting Type	Surface Mount, Wettable Flank
Base Product Number	LMR33630