Herramienta de diseño
LMQ62440-Q1
Convertidor reductor síncrono de frecuencia fija, 3 V a 36 V, 4 A y bajo ruido para automoción
Hoja de datos
LMQ62440-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, TJ
- Functional Safety-Capable
- Optimized for ultra-low EMI requirements
- Meets CISPR25 class 5 standard
- Hotrod™ package minimizes switch node ringing
- Internal bypass capacitors reduce EMI
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions
- Adjustable switch node rise time
- Designed for rugged Automotive applications
- Supports 42-V load dump
- 0.4-V dropout with 4-A load (typical)
- High efficiency power conversion at all loads
- 7-µA no load current at 13.5 VIN, 3.3 VOUT
- 90% 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
- Pin compatible with:
- LM62440-Q1 (36 V, 4 A)
The LMQ62440-Q1 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The device implements soft recovery from dropout eliminating overshoot on the output.
The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, 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 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.
The device is available in a 14-pin VQFN-HR package with wettable flanks. Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.
Productos similares que pueden interesarle
Pin por pin con la misma funcionalidad que el dispositivo comparado
Documentación técnica
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 6 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LMQ62440-Q1 Automotive 3-V to 36-V, Low EMI Synchronous Step-Down Converter datasheet (Rev. A) | 24 sep 2020 | |
| White paper | Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) | PDF | HTML | 28 nov 2023 | |
| User guide | LMQ62440EVM 2-MHz User's Guide | PDF | HTML | 14 sep 2020 | |
| Functional safety information | LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) | PDF | HTML | 09 sep 2020 | |
| Certificate | LMQ62440EVM-2MHz EU Declaration of Conformity (DoC) | 01 sep 2020 | ||
| Functional safety information | LMQ62440-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution | 01 abr 2020 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
Placa de evaluación
LMQ62440EVM — Módulo de evaluación de convertidor reductor síncrono de 36 V, 4 A, 5 V, 2.1 MHz y bajo EMI
The LMQ62440EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMQ62440 synchronous step-down converter. The LMQ62440 provides exceptional efficiency, low Iq, and low EMI in small solution size with integrated capacitors.
| Paquete | Pasadores | Descargar |
|---|---|---|
| VQFN-HR (RJR) | 14 | Ver opciones |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.