LP87334 Series
Automotive dual 3-A buck converters & dual linear regulators
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Topology | Mounting Type | Voltage/Current - Output 1▲▼ | Voltage/Current - Output 1▲▼ | Voltage/Current - Output 1 | Voltage/Current - Output 1▲▼ | w/Sequencer▲▼ | Supplier Device Package | Package / Case | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage/Current - Output 3 | Voltage/Current - Output 3▲▼ | Voltage/Current - Output 3▲▼ | Voltage/Current - Output 3▲▼ | Frequency - Switching▲▼ | w/LED Driver▲▼ | Voltage/Current - Output 2▲▼ | Voltage/Current - Output 2▲▼ | Voltage/Current - Output 2 | Voltage/Current - Output 2▲▼ | w/Supervisor▲▼ | Number of Outputs▲▼ | Grade | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LP87334DRHDRPMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) Synchronous (2), Linear (LDO) (2) 2MHz 28-VQFN (5x5) | Linear (LDO) (2), Step-Down (Buck) Synchronous (2) | Surface Mount, Wettable Flank | 3 A | 0.699999988079071 V | Adjustable | 3.359999895095825 V | 28-VQFN (5x5) | 28-VFQFN Exposed Pad | -40 °C | 125 °C | Adjustable | 3.299999952316284 V | 0.800000011920929 V | 0.30000001192092896 A | 2000000 Hz | 3.359999895095825 V | 3 A | Adjustable | 0.699999988079071 V | 4 ul | |||||
Texas Instruments LP87334ARHDRQ1PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (2), Linear (LDO) (2) 2MHz 28-VQFN (5x5) | Linear (LDO) (2), Step-Down (Buck) (2) | Surface Mount, Wettable Flank | 3 A | 0.699999988079071 V | Programmable | 3.359999895095825 V | 28-VQFN (5x5) | 28-VFQFN Exposed Pad | -40 °C | 125 °C | Programmable | 3.299999952316284 V | 0.800000011920929 V | 0.30000001192092896 A | 2000000 Hz | 3.359999895095825 V | 3 A | Programmable | 0.699999988079071 V | 4 ul | Automotive | AEC-Q100 |
Key Features
• AEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperatureInput voltage: 2.8 V to 5.5 VTwo high-efficiency step-down DC/DC converters:Output voltage: 0.7 V to 3.36 VMaximum output current 3 A per phaseAdding and shedding auto phase and force multi-phase operations in dual-phase configurationRemote differential feedback voltage sensing in dual-phase configurationProgrammable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs2-MHz switching frequencySpread-spectrum mode and phase interleaving for EMI reductionTwo linear regulators:Input voltage: 2.5 V to 5.5 VOutput voltage: 0.8 V to 3.3 VMaximum output current 300 mAConfigurable general-purpose output signals (GPO, GPO2)Interrupt function with programmable maskingProgrammable power-good signal (PGOOD)Output short-circuit and overload protectionOvertemperature warning and protectionOvervoltage protection (OVP) and undervoltage lockout (UVLO)28-pin, 5-mm × 5-mm VQFN package with wettable flanksAEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperatureInput voltage: 2.8 V to 5.5 VTwo high-efficiency step-down DC/DC converters:Output voltage: 0.7 V to 3.36 VMaximum output current 3 A per phaseAdding and shedding auto phase and force multi-phase operations in dual-phase configurationRemote differential feedback voltage sensing in dual-phase configurationProgrammable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs2-MHz switching frequencySpread-spectrum mode and phase interleaving for EMI reductionTwo linear regulators:Input voltage: 2.5 V to 5.5 VOutput voltage: 0.8 V to 3.3 VMaximum output current 300 mAConfigurable general-purpose output signals (GPO, GPO2)Interrupt function with programmable maskingProgrammable power-good signal (PGOOD)Output short-circuit and overload protectionOvertemperature warning and protectionOvervoltage protection (OVP) and undervoltage lockout (UVLO)28-pin, 5-mm × 5-mm VQFN package with wettable flanks
Description
AI
The LP8733xx-Q1 is designed to meet the power management requirements in automotive applications. The device has two step-down DC/DC converters (which can be configured as a single dual-phase regulator or two single-phase regulators), two linear regulators, and two general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.
The automatic PWM/PFM (AUTO mode) operation together with the automatic phase adding/shedding gives high efficiency over a wide output-current range. The LP8733xx-Q1 supports remote voltage sensing (differential in dual-phase configuration) to compensate IR drop between the regulator output and the point-of-load (POL), thus improving the accuracy of the output voltage. In addition, the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.
The LP8733xx-Q1 device supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.
The LP8733xx-Q1 is designed to meet the power management requirements in automotive applications. The device has two step-down DC/DC converters (which can be configured as a single dual-phase regulator or two single-phase regulators), two linear regulators, and two general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.
The automatic PWM/PFM (AUTO mode) operation together with the automatic phase adding/shedding gives high efficiency over a wide output-current range. The LP8733xx-Q1 supports remote voltage sensing (differential in dual-phase configuration) to compensate IR drop between the regulator output and the point-of-load (POL), thus improving the accuracy of the output voltage. In addition, the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.
The LP8733xx-Q1 device supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.