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TPS82671 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS82671 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page VIN SW FB MODE GND EN VOUT 1.8 V @ 600mA C I TPS82671SIP L VIN 2.3 V .. 4.8 V C O MODE SELECTION ENABLE DC/DC Converter GND 250 225 200 175 150 125 100 75 50 25 0 100 90 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1000 I - Load Current - mA O V = 3.6 V, V = 1.8 V I O Efficiency PFM/PWM Operation Power Loss PFM/PWM Operation TPS82671 TPS82675, TPS82677 www.ti.com SLVSAI0A – OCTOBER 2010 – REVISED APRIL 2011 600-mA, HIGH-EFFICIENCY MicroSiP ™ STEP-DOWN CONVERTER (PROFILE <1.0mm) Check for Samples: TPS82671, TPS82675, TPS82677 1 FEATURES DESCRIPTION 23 • 90% Efficiency at 5.5MHz Operation The TPS8267x device is a complete 600mA, DC/DC • 17 μA Quiescent Current step-down power supply intended for low-power applications. Included in the package are the • Wide VIN Range From 2.3V to 4.8V switching regulator, inductor and input/output • 5.5MHz Regulated Frequency Operation capacitors. No additional components are required to • Spread Spectrum, PWM Frequency Dithering finish the design. • Best in Class Load and Line Transient The TPS8267x is based on a high-frequency • ±2% Total DC Voltage Accuracy synchronous step-down dc-dc converter optimized for battery-powered portable applications. The • Automatic PFM/PWM Mode Switching MicroSiPTM DC/DC converter operates at a regulated • Low Ripple Light-Load PFM Mode 5.5-MHz switching frequency and enters the • ≥35dB VIN PSRR (1kHz to 10kHz) power-save mode operation at light load currents to • Internal Soft Start, 120- µs Start-Up Time maintain high efficiency over the entire load current range. • Integrated Active Power-Down Sequencing (Optional) The PFM mode extends the battery life by reducing the quiescent current to 17 μA (typ) during light load • Current Overload and Thermal Shutdown operation. For noise-sensitive applications, the device Protection has PWM spread spectrum capability providing a • Sub 1-mm Profile Solution lower noise regulated output, as well as low noise at • Total Solution Size <6.7 mm2 the input. These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain APPLICATIONS better power conversion efficiency. • Cell Phones, Smart-Phones The TPS8267x is packaged in a compact (2.3mm x • Digital TV, WLAN, GPS and Bluetooth ™ 2.9mm) and low profile (1.0mm) BGA package Applications suitable for automated assembly by standard surface • POL Applications mount equipment. Figure 1. Typical Application Figure 2. Efficiency vs. Load Current 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 MicroSiP is a trademark of Texas Instruments. 3 Bluetooth is a trademark of Bluetooth SIG, Inc. UNLESS OTHERWISE NOTED this document contains Copyright © 2010–2011, Texas Instruments Incorporated PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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