3.5-V to 32-V, 3.25-A step-down voltage converter with spread spectrum
Product details
Parameters
Package | Pins | Size
Features
- 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
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Description
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
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Integrated synchronous rectification
- Low operating quiescent current
- High efficiency at light loads
- Low minimum on-time
Description
The LM63635 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM63635 synchronous step-down converter.
Features
- Integrated synchronous rectification
- Low operating quiescent current
- High efficiency at light loads
- Low minimum on-time
Description
Features
- Integrated synchronous rectification
- Low operating quiescent current
- High efficiency at light loads
- Low minimum on-time
Software development
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download PMP21939 BOM.pdf (201KB) -
download PMP21939 Assembly Drawing.pdf (182KB) -
download PMP21939 PCB.pdf (1227KB) -
download PMP21939 CAD Files.zip (1104KB) -
download PMP21939 Gerber.zip (2336KB)
Design files
-
download PMP30670 BOM.pdf (105KB) -
download PMP30670 Assembly Drawing.pdf (309KB) -
download PMP30670 PCB.pdf (1314KB) -
download PMP30670 CAD Files.zip (1797KB) -
download PMP30670 Gerber.zip (327KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
HTSSOP (PWP) | 16 | View options |
SON (DRR) | 12 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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