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LP87322E/F Datasheet(PDF) 1 Page - Texas Instruments |
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LP87322E/F Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 75 page  Output Current (A) 0.001 0.01 0.1 1 2 50 60 70 80 90 100 D002 Vin=3.7V, Vout=1.0V Vin=3.7V, Vout=1.8V Vin=3.7V, Vout=2.5V SW_B0 VIN_B0 VIN_B1 VANA VIN FB_B0 VOUT_B0 LOAD SDA SCL nINT CLKIN (GPO2) GNDs EN GPO SW_B1 FB_B1 VOUT_B1 LOAD PGOOD VOUT_LDO1 VOUT_LDO0 VIN_LDO0 VIN_LDO1 VOUT_LDO0 VOUT_LDO1 Copyright © 2017, Texas Instruments Incorporated Product Folder Order Now Technical Documents Tools & Software Support & Community 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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. LP87322B-Q1, LP87322D-Q1, LP87322E-Q1, LP87322F-Q1 SNVSAC5 – SEPTEMBER 2017 LP87322B/D/E/F-Q1 Dual High-Current Buck Converter and Dual Linear Regulator 1 1 Features 1 • 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 2 A – 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 Simplified Schematic 2 Applications • Automotive Head Unit and Cluster • Automotive Camera Module • Surround View System ECU • Radar System ECU • Automotive Display 3 Description The LP87322B/D/E/F-Q1 is designed to meet the power management requirements of the latest processors and platforms in automotive camera and radar applications. The device contains two step- down DC-DC converters and two linear regulators and 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 gives high efficiency over a wide output-current range. The LP87322B/D/E/F-Q1 supports remote voltage sensing 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 LP87322B/D/E/F-Q1 device also 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 PART NUMBER PACKAGE BODY SIZE (NOM) LP87322E/F VQFN (28) 5.00 mm × 5.00 mm LP87322B/D (preview) (1) For all available packages, see the orderable addendum at the end of the data sheet. DC-DC Efficiency vs Output Current |
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