Catalog
Automotive 3V-to-65V 0.3A buck converter
Key Features
• AEC-Q100-qualified for automotive applications:Device temperature grade 0: –40°C to +150°C, TA> 70% efficiency at 5mA4µA IQ (switching) at 24VIN to 3.3VOUT (fixed output option)Miniature design size and low component cost2mm × 2mm HotRod™ package with wettable flanksInternal compensationDesigned for automotive applications:Junction temperature range –40°C to +175°CPseudo-random spread spectrum compatible with CISPR 25 EMI standardWide input voltage range: 3V (falling threshold) to 65VAdjustable and 3.3V fixed output voltage options availableSynchronizable with MODE/SYNC pin variantAdjustable FSW: 200kHz to 2.2MHz with RT pin variantFunctional Safety-CapableDocumentation available to aid designs requiring functional safetyPin compatible withLMR36503-Q1(65V, 300mA)Create a custom design using the LMR36503E-Q1 with theWEBENCH Power DesignerAEC-Q100-qualified for automotive applications:Device temperature grade 0: –40°C to +150°C, TA> 70% efficiency at 5mA4µA IQ (switching) at 24VIN to 3.3VOUT (fixed output option)Miniature design size and low component cost2mm × 2mm HotRod™ package with wettable flanksInternal compensationDesigned for automotive applications:Junction temperature range –40°C to +175°CPseudo-random spread spectrum compatible with CISPR 25 EMI standardWide input voltage range: 3V (falling threshold) to 65VAdjustable and 3.3V fixed output voltage options availableSynchronizable with MODE/SYNC pin variantAdjustable FSW: 200kHz to 2.2MHz with RT pin variantFunctional Safety-CapableDocumentation available to aid designs requiring functional safetyPin compatible withLMR36503-Q1(65V, 300mA)Create a custom design using the LMR36503E-Q1 with theWEBENCH Power Designer
Description
AI
The LMR36503E-Q1 is a 65V, 0.3A synchronous step-down DC/DC converter in 2mm × 2mm HotRod package. This easy-to-use converter can handle input voltage transients up to 70V, provide excellent EMI performance, and support fixed 3.3V, 5V and other adjustable output voltages.
The LMR36503E-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 LMR36503E-Q1 helps the device remain functional during a deep input voltage sag condition, making the device an excellent choice for automotive applications withstanding severe cold crank start impulses. The PGOOD flag in the LMR36503E-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 LMR36503E-Q1 to support much higher system efficiency at low output loads. The MODE/SYNC pin variant helps to synchronize the LMR36503E-Q1 to an external clock. With the right resistor selection, the LMR36503E-Q1 RT pin variant can also be externally programmed to any desired switching frequency of operation. The rich feature set of the LMR36503E-Q1 is designed to simplify implementation for a wide range of automotive end equipments.
The LMR36503E-Q1 is a 65V, 0.3A synchronous step-down DC/DC converter in 2mm × 2mm HotRod package. This easy-to-use converter can handle input voltage transients up to 70V, provide excellent EMI performance, and support fixed 3.3V, 5V and other adjustable output voltages.
The LMR36503E-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 LMR36503E-Q1 helps the device remain functional during a deep input voltage sag condition, making the device an excellent choice for automotive applications withstanding severe cold crank start impulses. The PGOOD flag in the LMR36503E-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 LMR36503E-Q1 to support much higher system efficiency at low output loads. The MODE/SYNC pin variant helps to synchronize the LMR36503E-Q1 to an external clock. With the right resistor selection, the LMR36503E-Q1 RT pin variant can also be externally programmed to any desired switching frequency of operation. The rich feature set of the LMR36503E-Q1 is designed to simplify implementation for a wide range of automotive end equipments.
