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LM704A0-Q1

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Synchron-DC/DC-Abwärtswandler mit hoher Dichte für den Automobilbereich mit 4,5 V bis 45 V-Eingang u

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LM704A0-Q1

AKTIV
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Produktdetails

Rating Automotive Topology Buck Iout (max) (A) 10 Vin (max) (V) 45 Vin (min) (V) 4.5 Vout (max) (V) 36 Vout (min) (V) 0.8 Features Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Fixed soft start, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Stackable, Thermal shutdown, UVLO adjustable EMI features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000065 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 10 Vin (max) (V) 45 Vin (min) (V) 4.5 Vout (max) (V) 36 Vout (min) (V) 0.8 Features Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Fixed soft start, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Stackable, Thermal shutdown, UVLO adjustable EMI features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000065 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
VQFN (RRX) 29 36 mm² (6 mm × 6 mm)
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Synchronous DC/DC converter with a versatile buck controller and robust power MOSFETs
    • Wide input voltage range: 4.5V to 45V
    • Shutdown mode current: 2.3µA
    • No-load IQ regulating 12V to 5V: 15.5µA
    • 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 36V
    • Dual-phase operation enabling output currents up to 16A
  • Designed for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-selectable ±8% dual-random spread spectrum reduces peak emissions
    • Switching frequency: 200kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Inherent protection features for robust design
    • Internal hiccup-mode overcurrent protection
    • Enable, power good, and thermal shutdown
    • Internal or external loop compensation
  • 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating
  • Create a custom design using the LM704A0-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Synchronous DC/DC converter with a versatile buck controller and robust power MOSFETs
    • Wide input voltage range: 4.5V to 45V
    • Shutdown mode current: 2.3µA
    • No-load IQ regulating 12V to 5V: 15.5µA
    • 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 36V
    • Dual-phase operation enabling output currents up to 16A
  • Designed for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-selectable ±8% dual-random spread spectrum reduces peak emissions
    • Switching frequency: 200kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Inherent protection features for robust design
    • Internal hiccup-mode overcurrent protection
    • Enable, power good, and thermal shutdown
    • Internal or external loop compensation
  • 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating
  • Create a custom design using the LM704A0-Q1 with the WEBENCH Power Designer

The LM704A0-Q1 is a low-IQ, wide-VIN synchronous buck converter designed for an input voltage range of 4.5V to 45V and delivering up to 10A of output current at fixed output voltages of 3.3V, 5V, 12V, or an adjustable output.

The LM704A0-Q1 uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. A pair of LM704A0-Q1 converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for applications requiring up to 20A of output current.

The LM704A0-Q1 features a unique Dual Random Spread Spectrum (DRSS) function that combines low-frequency triangular and high-frequency cycle-by-cycle random modulations for improved EMI performance across a wide range of frequency bands.

Additional features of the LM704A0-Q1 include user-selectable diode emulation for lower current consumption at light-load conditions, open-drain Power-Good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 2.8ms soft-start time, and thermal shutdown protection with automatic recovery.

The LM704A0-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).

The LM704A0-Q1 is a low-IQ, wide-VIN synchronous buck converter designed for an input voltage range of 4.5V to 45V and delivering up to 10A of output current at fixed output voltages of 3.3V, 5V, 12V, or an adjustable output.

The LM704A0-Q1 uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. A pair of LM704A0-Q1 converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for applications requiring up to 20A of output current.

The LM704A0-Q1 features a unique Dual Random Spread Spectrum (DRSS) function that combines low-frequency triangular and high-frequency cycle-by-cycle random modulations for improved EMI performance across a wide range of frequency bands.

Additional features of the LM704A0-Q1 include user-selectable diode emulation for lower current consumption at light-load conditions, open-drain Power-Good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 2.8ms soft-start time, and thermal shutdown protection with automatic recovery.

The LM704A0-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).
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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LM704A0-Q1 45V, 10A, Automotive, High-Efficiency Buck Converter Designed for High Power Density datasheet PDF | HTML 18.09.2024
Informationen zur funktionalen Sicherheit LM704A0-Q1 Functional Safety FIT Rate, FMD, and Pin FMA PDF | HTML 07.10.2024

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