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Texas Instruments LMR66430 | Demoboard LMR66430-2EVM
36-V, 1-A, 2-A, and 3-A, Ultra-Small, Synchronous Step-Down Converter
Overview
| Topology | Buck Converter |
| Input voltage | 2.7-36 V |
| Output 1 | 3.3 V / 3 A |
| Output 2 | 5 V / 3 A |
| IC revision | 1 |
Description
The LMR664x0 is a small 36-V, 3-A (available in 2 A and 1-A variants) synchronous step-down DC/DC converter in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.
Features
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Designed for industrial applications:
- Junction temperature range –40°C to +150°C
- NC pin between critical pins for better reliability
- Best in-class pin FMEA
- Input transient protection up to 42 V
- Wide input voltage range after start-up: 2.7 V (falling threshold) to 36 V
- Adjustable output up to 95% of VIN, 3.3-V, and 5-V fixed VOUT options available
- Optimized for low EMI requirements:
- Dual random spread spectrum reduces peak emissions
- Enhanced HotRod™ QFN package minimizes switch node ringing
- Greater than 85% efficiency at 1 mA
- Miniature design size and low component cost:
- 2.6-mm × 2.6-mm enhanced HotRod QFN package with wettable flanks
- Internal control loop compensation
Typical applications
- Medical
- Aerospace and defense
- Factory automation: PLC, DCS, and PAC, Test and measurement
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | Samples |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | ||||
| WCAP-CSGP MLCCs 50 V(DC), 4.7 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance4.7 µF | Capacitance±10% | Rated Voltage50 V (DC) | Size1206 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.02 GΩ | Ceramic TypeX7R Class II | Length3.2 mm | Width1.6 mm | Height1.6 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel |