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TPS54262MPWPREP Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54262MPWPREP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 48 page VIN EN Cdly GND OV_TH COMP VSENSE PH V Reg VBATT SS SYNC LPM VIN BOOT Rslew RT/CLK VReg R1 R4 R6 C1 C3 C4 C5 L D1 D2 C7 R9 C8 R11 R10 RST_TH TPS54262 RST RESET R8 R7 C2 C6 R5 R2 R3 R12 Copyright © 2016, Texas Instruments Incorporated 0 10 20 30 40 50 60 70 80 90 0.05 0.5 1 1.5 2 ILoad - Load Current - A VIN = 14 V VIN = 7 V V = 5 V f = 500 kHz L = 22 µH C = 100 µF Rslew = 30 k T = 25°C Reg sw A W Product Folder Sample & Buy 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. PRODUCTION DATA. TPS54262-EP SLVSDP3 – DECEMBER 2016 TPS54262-EP 2-A 60-V Step-Down DC-DC Converter With Low I(q) and Voltage Supervisor 1 1 Features 1 • Asynchronous Switch Mode Regulator • Qualified for Automotive Applications • 3.6-V to 48-V Operating Range, Withstands Transients up to 60 V • 2-A Maximum Load Current • 50-µA Typical Quiescent Current • 200-kHz to 2.2-MHz Switching Frequency • 0.8 V ± 1.5% Voltage Reference • High-Voltage Tolerant Enable Input • Soft Start on Enable Cycle • Slew Rate Control on Internal Power Switch • Low-Power Mode for Light-Load Conditions • Programmable Delay for Power-On Reset • External Compensation for Error Amplifier • Reset Function Filter Time for Fast Negative Transients • Programmable Overvoltage, Undervoltage Output Monitor • Thermal Sensing and Shutdown • Switch Current Limit Protection • Short Circuit and Overcurrent Protection of FET • Junction Temperature Range: –55°C to 150°C • 20-Pin HTSSOP PowerPAD™ Package • Supports Defense, Aerospace, and Medical Applications: – Controlled Baseline – One Assembly/Test Site – One Fabrication Site – Available in Extended (–55°C to 125°C) Temperature Range – Extended Product Life Cycle – Extended Product-Change Notification – Product Traceability 2 Applications • Automotive Telematics and eCall • Automotive Infotainment and Cluster – Head Unit – Navigation – Display 3 Description The TPS54262-EP device is a 60-V, 2-A step-down switch-mode power supply with a low-power mode and a programmable voltage supervisor with an integrated NMOS switching FET. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by-cycle current limit. The device also features low-power mode operation under light-load conditions which reduces the supply current to 50 µA (typical). By pulling the EN pin low, the supply shutdown current is reduced to 1 µA (typical). An open-drain reset signal indicates when the nominal output drops below the reset threshold set by an external resistor divider network. The output voltage start-up ramp is controlled by a soft-start capacitor. There is an internal undervoltage shutown which is activated when the input supply ramps down to 2.6 V. The device features a short circuit protection circuit, which protects the device during overload condition and also has a thermal shutdown protection. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS54262-EP HTSSOP (20) 6.50 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic Typical Converter Efficiency |
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