LM61460
Synchroner Abwärtswandler mit geringem EMI-Wert, 3 bis 36 V, 6 A
LM61460
- Functional Safety-Capable
- Optimized for ultra low EMI requirements
- Hotrod™ package and parallel input path minimize switch node ringing
- Adjustable SW node rise time
- Designed for reliable and rugged applications
- Supports 42-V transients
- ±1% total output regulation accuracy
- VOUT adjustable from 1 V to 95% of VIN
- 0.4-V dropout with 4-A load (typical)
- Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-citcuit protection
- High efficiency power conversion at all loads
- 7-µA no load current at 13.5 VIN, 3.3 VOUT
- 83% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
- Low MOSFET ON resistance
- RDS_ON_HS = 41 mΩ (typical)
- RDS_ON_LS = 21 mΩ (typical)
- External bias option for improved efficiency
- Suitable for scalable power supplies
- Pin compatible with:
- LM61440-Q1 (36 V, 4 A, adjustable fSW)
- LM61440 (36 V, 4 A, adjustable fSW)
- LMQ61460 (36 V, 6 A, internal caps)
- Pin compatible with:
- Use TPSM63606 module for faster time to market
The LM61460 is a high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460 implements soft recovery from dropout eliminating overshoot on the output.
The LM61460 is specifically designed for minimal EMI. The device incorporates adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.
Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.
Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.
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Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | LM61460 3-V to 36-V, 6-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. D) | PDF | HTML | 28 Jul 2022 |
Application note | How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck | PDF | HTML | 16 Aug 2023 | |
Application note | Using the LM61460-Q1 and LM61495-Q1 in USB Type-C Applications | PDF | HTML | 15 Dez 2021 | |
EVM User's guide | LM61460-Q1 EVM User's Guide (Rev. D) | PDF | HTML | 30 Jul 2021 | |
Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 08 Apr 2021 | ||
Functional safety information | LM61x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 08 Okt 2020 | |
Technical article | Keeping the brain cool: how to use high-power DC/DCs in single-board computer desi | PDF | HTML | 28 Feb 2020 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
LM61460EVM — Evaluierungsmodul für 36-V-, 6-A-, 5-V-Synchron-Abwärtswandler mit niedrigem EMI-Wert, 400 kHz
PMP22416 — USB Type-C®, Dual-Abwärts Referenzdesign
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
VQFN-HR (RJR) | 14 | Ultra Librarian |
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