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Data sheet
LM63635-Q1
- AEC-Q100-Qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
- Functional Safety-Capable
- Supports automotive system requirements
- Input voltage range: 3.5 V to 36 V
- Short minimum on-time of 50 ns
- Good EMI performance
- Psuedo-random spread spectrum
- Compatible with CISPR 25
- Low operating quiescent current of 23 µA
- Junction temperature range –40°C to +150°C
- High design flexibility
- Pin selectable VOUT: 3.3 V, 5 V, adjustable 1 V to 20 V
- Output current: 3.25 A
- Pin selectable frequency: 400 kHz, 2.1 MHz, adjustable 250 kHz to 2200 kHz
- Pin selectable FPWM, AUTO, sync modes
- Pin compatible with: LM63610-Q1/ LM63615-Q1/ LM63625-Q1
- TSSOP: Thermally-enhanced package
- Small solution size
- As small as: 14 mm × 14 mm for 3.25 A, 2.2 MHz with WSON package
- Highly integrated solution
- Low component count
The LM63635-Q1 regulator is an easy-to-use, synchronous, step-down DC/DC converter designed for rugged automotive applications. The LM63635-Q1 can drive up to 3.25-A of load current from an input of up to 36 V for WSON package and 32 V for HTSSOP package. The converter has high light load efficiency and output accuracy in a small solution size. Features such as a RESET flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency while maintaining tight load regulation. Integration eliminates many 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 LM63635-Q1 is available in both the HTSSOP 16-pin power package, with PowerPAD™, and the WSON 12-pin power package.
Technical documentation
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Evaluation board
AWR2944EVM — AWR2944 evaluation module for automotive, second-generation 76-GHz to 81-GHz high-performance SoC
The AWR2944 evaluation module (EVM) is an easy-to-use platform for evaluating the AWR2944 mmWave system-on-chip (SoC) radar sensor, which has direct connectivity to the DCA1000EVM (sold separately).
The AWR2944EVM kit contains everything required to start developing software for the on-chip C66x (...)
Evaluation board
LM63625EVM — 3.5-V to 36-V, 2.5-A synchronous step-down converter evaluation module
The LM63625 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM63625 synchronous step-down converter.
User guide: PDF
Evaluation board
LM63635DNEVM — LM63635DN evaluation module for 3.5-V to 36-V, 3.25-A step-down voltage converter with spread spectr
LM63635DNEVM evaluation module (EVM) helps designers evaluate the operation and performance of the LM636x5CAQDRRQ1 buck regulator. The LM636x5CAQDRRQ1 is a family of easy-to-use synchronous step-down DC/DC converters capable of driving up to 3.5-A of load current from an input voltage of 3.5-V to (...)
Evaluation board
LM63635EVM — 3.5-A synchronous step-down converter evaluation module
The LM63635 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM63635 synchronous step-down converter.
User guide: PDF
Evaluation board
LM63635QDRREVM — Evaluation module for 3.5-V to 36-V, 3.25-A step-down voltage converter with spread spectrum
The LM63635QDRREVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM63635-Q1 synchronous step-down converter.
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs
PMP30930 — EMI-optimized buck reference design
This reference design consists of three separable boards optimized for low EMI.
The three boards are labeled
- PMP30930 Part A (using LM63635-Q1, PW package)
- PMP30930 Part B (using LM63635-Q1, DR package)
- PMP30930 Part C (Using LM61460-Q1)
Test report: PDF
Reference designs
PMP21939 — Four-output synchronous buck reference design for automotive telematics control units
This reference design uses an LM63635-Q1 synchronous buck converter to output either a 3.3-V or 5-V rail. The bus converter switches at 2.1 MHz, and the load converters (TPS62810-Q1) switch at 2.2 MHz. The system is designed for telematics control unit power. Easily configurable jumpers allow (...)
Reference designs
PMP30670 — Automotive wide VIN front-end reference design for digital cockpit processing units
This reference design shows a power tree for automotive digital cockpit applications. The LM74700-Q1 provides low-loss reverse polarity protection to the system followed by an input filter. The LM5143-Q1 dual-synchronous buck converter provides a 3.3-V rail, which can support up to 15 A for a (...)
| Package | Pins | Download |
|---|---|---|
| HTSSOP (PWP) | 16 | View options |
| WSON (DRR) | 12 | View options |
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