Inicio Gestión de la energía AC/DC & DC/DC converters (integrated FET)
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Gestión de la energía
AC/DC & DC/DC converters (integrated FET)

LMR36503-Q1

ACTIVO

Convertidor buck de 3 V a 65 V, 0,3 A de grado automotriz, optimizado para el tamaño y la eficien

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LMR36503-Q1

ACTIVO
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Detalles del producto

Iout (max) (A) 0.3 Vin (min) (V) 3 Vin (max) (V) 65 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 28 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000004
Iout (max) (A) 0.3 Vin (min) (V) 3 Vin (max) (V) 65 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 28 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000004
VQFN-HR (RPE) 9 4 mm² 2 x 2
  • AEC-Q100-qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • >70% efficiency at 5 mA
    • 4 µA IQ (switching) at 24 VIN to 3.3 VOUT (fixed output option)
  • Miniature solution size and low component cost
    • 2-mm × 2-mm HotRod™ package with wettable flanks
    • Internal compensation
  • Designed for automotive applications:
    • Junction temperature range –40°C to +150°C
    • Pseudo-random spread spectrum compatible with CISPR 25 EMI standard
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Adjustable, 3.3-V and 5-V fixed output voltage options available
    • Synchronizable with MODE/SYNC pin variant
    • Adjustable FSW: 200 kHz to 2.2 MHz with RT pin variant
    • Pin compatible with LMR36506-Q1 (65 V, 600 mA)
  • AEC-Q100-qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • >70% efficiency at 5 mA
    • 4 µA IQ (switching) at 24 VIN to 3.3 VOUT (fixed output option)
  • Miniature solution size and low component cost
    • 2-mm × 2-mm HotRod™ package with wettable flanks
    • Internal compensation
  • Designed for automotive applications:
    • Junction temperature range –40°C to +150°C
    • Pseudo-random spread spectrum compatible with CISPR 25 EMI standard
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Adjustable, 3.3-V and 5-V fixed output voltage options available
    • Synchronizable with MODE/SYNC pin variant
    • Adjustable FSW: 200 kHz to 2.2 MHz with RT pin variant
    • Pin compatible with LMR36506-Q1 (65 V, 600 mA)

The LMR36503-Q1 is the industry’s smallest 65 V, 0.3 A synchronous step-down DC/DC converter in 2-mm x 2-mm HotRod™ package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and support fixed 3.3 V, 5 V and other adjustable output voltages.

The LMR36503-Q1 uses peak current mode control architecture with internal compensation and maintains stable operation with minimal output capacitance. The wide input operating range of the LMR36503-Q1 helps it remain functional during a deep input voltage sag condition, making it an excellent choice for automotive applications withstanding severe cold crank start impulses. The PGOOD flag in the LMR36503-Q1 provides precise indication of the output voltage status, eliminating the requirement for an external supervisor. A seamless transition from FPWM to PFM, with an ultra-low standby quiescent current allows the LMR36503-Q1 to support much higher system efficiency at low output loads. The MODE/SYNC pin variant helps to synchronize the LMR36503-Q1 to an external clock. With the right resistor selection, the LMR36503-Q1 RT pin variant can also be externally programmed to any desired switching frequency of operation. The rich feature set of the LMR36503-Q1 is designed to simplify implementation for a wide range of automotive end equipments.

The LMR36503-Q1 is the industry’s smallest 65 V, 0.3 A synchronous step-down DC/DC converter in 2-mm x 2-mm HotRod™ package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and support fixed 3.3 V, 5 V and other adjustable output voltages.

The LMR36503-Q1 uses peak current mode control architecture with internal compensation and maintains stable operation with minimal output capacitance. The wide input operating range of the LMR36503-Q1 helps it remain functional during a deep input voltage sag condition, making it an excellent choice for automotive applications withstanding severe cold crank start impulses. The PGOOD flag in the LMR36503-Q1 provides precise indication of the output voltage status, eliminating the requirement for an external supervisor. A seamless transition from FPWM to PFM, with an ultra-low standby quiescent current allows the LMR36503-Q1 to support much higher system efficiency at low output loads. The MODE/SYNC pin variant helps to synchronize the LMR36503-Q1 to an external clock. With the right resistor selection, the LMR36503-Q1 RT pin variant can also be externally programmed to any desired switching frequency of operation. The rich feature set of the LMR36503-Q1 is designed to simplify implementation for a wide range of automotive end equipments.
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Documentación técnica

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* Data sheet LMR36503-Q1 3-V to 65-V, 0.3-A Synchronous Buck Converter Optimized for Size and Light Load Efficiency datasheet (Rev. B) PDF | HTML 22 sep 2020
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 abr 2021
Functional safety information LMR3650x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 26 oct 2020
EVM User's guide LMR36506MSCEVM User’s Guide (Rev. A) 19 may 2020
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 11 dic 2019

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

LMR36506EVM — Módulo de evaluación del convertidor buck síncrono ultrapequeño de 3 V a 65 V y 0,6 A de grado autom

The LMR36506MSCEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR36506-Q1 synchronous step-down converter. The LMR36503-Q1 can also be evaluated with LMR36506MSCEVM.

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LMR36503MSC-Q1 PSpice Unencrypted Transient Model

SNVMC16.ZIP (528 KB) - PSpice Model
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Modelo de simulación

LMR36503MSC3-Q1 PSpice Unencrypted Transient Model

SNVMC17.ZIP (530 KB) - PSpice Model
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Modelo de simulación

LMR36503MSC5-Q1 PSpice Unencrypted Transient Model

SNVMC28.ZIP (524 KB) - PSpice Model
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Modelo de simulación

LMR36503RS3-Q1 PSpice Unencrypted Transient Model

SNVMC26.ZIP (517 KB) - PSpice Model
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Modelo de simulación

LMR36503RS5-Q1 PSpice Unencrypted Transient Model

SNVMC27.ZIP (538 KB) - PSpice Model
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Modelo de simulación

LMR36506R PSpice Unencrypted Transient Model

SNVMBW4.ZIP (166 KB) - PSpice Model
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Paquete Pasadores Descargar
VQFN-HR (RPE) 9 Ver opciones
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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

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