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LP8733-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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LP8733-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 86 page  LP8733xx-Q1 Dual High-Current Buck Converter and Dual Linear Regulator 1 Features • AEC-Q100 qualified with the following results: – Device temperature grade 1: –40°C to +125°C ambient operating temperature • Input voltage: 2.8 V to 5.5 V • Two high-efficiency step-down DC/DC converters: – Output voltage: 0.7 V to 3.36 V – Maximum output current 3 A per phase – Adding and shedding auto phase and force multi-phase operations in dual-phase configuration – Remote differential feedback voltage sensing in dual-phase configuration – Programmable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs – 2-MHz switching frequency – Spread-spectrum mode and phase interleaving for EMI reduction • Two linear regulators: – Input voltage: 2.5 V to 5.5 V – Output voltage: 0.8 V to 3.3 V – Maximum output current 300 mA • Configurable general-purpose output signals (GPO, GPO2) • Interrupt function with programmable masking • Programmable power-good signal (PGOOD) • Output short-circuit and overload protection • Overtemperature warning and protection • Overvoltage protection (OVP) and undervoltage lockout (UVLO) • 28-pin, 5-mm × 5-mm VQFN package with wettable flanks SW_B0 VIN_B0 VIN_B1 VANA VIN FB_B0 1 ± 2 Outputs SDA SCL nINT CLKIN (GPO2) GNDs EN GPO SW_B1 FB_B1 PGOOD VOUT_LDO1 VOUT_LDO0 VIN_LDO0 VIN_LDO1 VOUT_LDO0 VOUT_LDO1 Copyright © 2018, Texas Instruments Incorporated Configurable multi-phase Simplified Schematic 2 Applications • Automotive head unit and cluster • Automotive camera module • Surround view system ECU • Radar system ECU 3 Description 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LP8733xx-Q1 VQFN (28) 5.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Output Current (A) 0.025 0.1 1 6 50 60 70 80 90 100 D420 1PH, Vin=3.7V, Vout=1.0V 1PH, Vin=3.7V, Vout=2.5V 2PH, Vin=3.7V, Vout=1.0V 2PH, Vin=3.7V, Vout=2.5V DC/DC Efficiency vs Output Current (Dual-Phase) LP8733-Q1 SNVSB64A – JUNE 2019 – REVISED JUNE 2021 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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