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TPS40304 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40304 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 37 page 5 4 3 2 6 7 8 9 BOOT HDRV SW LDRV/OC FB COMP PGOOD EN/SS TPS4030x 1 10 BP VDD PAD V IN SD V OUT V IN UDG-09158 V OUT GND Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS40303, TPS40304, TPS40305 SLUS964B – NOVEMBER 2009 – REVISED MAY 2015 TPS4030x 3-V to 20-V Input Synchronous Buck Controller 1 Features 3 Description The TPS4030x is a family of cost-optimized 1 • Input Voltage Range From 3 V to 20 V synchronous buck controllers that operate from 3-V to • 300-kHz (TPS40303), 600-kHz (TPS40304), and 20-V input. The controller implements a voltage-mode 1.2-MHz (TPS40305) Switching Frequencies control architecture with input-voltage feed-forward • High- and Low-Side FET RDS(on) Current Sensing compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 300 • Programmable Thermally Compensated OCP kHz, 600 kHz, or 1.2 MHz. Levels The Frequency Spread Spectrum (FSS) feature adds • Programmable Soft-Start to the switching frequency, significantly reducing the • 600-mV, 1% Reference Voltage peak EMI noise and making it much easier to comply • Voltage Feed-Forward Compensation with EMI standards. • Supports Prebiased Output The TPS4030x offers design with a variety of user- • Frequency Spread Spectrum programmable functions, including soft-start, • Thermal Shutdown Protection at 145°C overcurrent protection (OCP) levels, and loop compensation. • 10-Pin 3-mm × 3-mm SON Package With Ground Connection to Thermal Pad OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS4030x enters 2 Applications a calibration cycle, measures the voltage at the LDRV • POL Modules pin, and sets an internal OCP voltage level. During • Printers operation, the programmed OCP voltage level is compared to the voltage drop across the low-side • Digital TVs FET when it is on to determine whether there is an • Telecom overcurrent condition. The TPS4030x then enters a shutdown and restart cycle until the fault is removed. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS40303 TPS40304 VSON (10) 3.00 mm × 3.00 mm TPS40305 (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Application Diagram 1 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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