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TPS54283PWPRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54283PWPRG4 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 55 page  1 FEATURES CONTENTS DESCRIPTION APPLICATIONS 1 2 3 4 14 13 12 11 PVDD2 BOOT2 SW2 BP PVDD1 BOOT1 SW1 GND TPS54283 5 6 7 10 9 8 SEQ ILIM2 FB2 EN1 EN2 FB1 OUTPUT1 OUTPUT2 V IN UDG-07006 GND TPS54283,, TPS54286 SLUS749C – JULY 2007 – REVISED OCTOBER 2007 www.ti.com 2-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET 23 • 4.5-V to 28-V Input Range Device Ratings 2 • Output Voltage Range 0.8 V to 90% of Input Electrical Characteristics 3 Voltage Device Information 9 • Output Current Up to 2 A Application Information 12 Design Examples 32 • Two Fixed Switching Frequency Versions: Additional References 44 – TPS54283: 300 kHz – TPS54286: 600 kHz • Two Selectable Levels of Overcurrent Protection (Output 2) TPS54283 and TPS54286 are dual output non-synchronous buck converters capable of • 0.8-V 1.5% Voltage Reference supporting 2-A output applications that operate from a • 2.1-ms Internal Soft Start 4.5-V to 28-V input supply voltage, and require output • Dual PWM Outputs 180° Out-of-Phase voltages between 0.8 V and 90% of the input voltage. • Ratiometric or Sequential Startup Modes With internally-determined operating frequency, soft Selectable by a Single Pin start time, and control loop compensation, these • 100-mΩ Internal High-Side MOSFETs converters provide many features with a minimum of external components. Channel 1 overcurrent • Current Mode Control protection is set at 3 A, while Channel 2 overcurrent • Internal Compensation (See Page 16) protection level is selected by connecting a pin to • Pulse-by-Pulse Overcurrent Protection ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for • Thermal Shutdown Protection at 148°C applications not needing the full load capability of • 14-Pin PowerPAD™ HTSSOP package both outputs. The outputs may be enabled independently, or may be configured to allow either ratiometric or sequential • Set Top Box startup sequencing. Additionally, the two outputs may • Digital TV also be powered from different sources. • Power for DSP • Consumer Electronics 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PowerPAD is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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