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TPS61256YFFT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS61256YFFT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 34 page C 4.7 I μF C 10 uF O SW VIN EN VOUT BP GND L 1 μH V IN 2.65 V .. 4.85 V V OUT 5.0 V @ 700mA TPS61256 0 10 20 30 40 50 60 70 80 90 100 . I - Output Current - mA O V - Input Voltage - V I V = 5.0 V O TPS61253, TPS61254, TPS61256, TPS61258 www.ti.com SLVSAG8B – SEPTEMBER 2011 – REVISED MAY 2012 3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING Check for Samples: TPS61253, TPS61254, TPS61256, TPS61258 1 FEATURES DESCRIPTION • 93% Efficiency at 3.5MHz Operation The TPS6125x device provides a power supply • 22µA Quiescent Current in Standby Mode solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x • 36µA Quiescent Current in Normal Operation supports up to 800-mA load current from a battery • Wide VIN Range From 2.3V to 5.5V discharged as low as 2.65V and allows the use of low • VIN ≥ VOUT Operation cost chip inductor and capacitors. • IOUT ≥800mA at VOUT = 4.5V, VIN ≥2.65V With a wide input voltage range of 2.3V to 5.5V, the • IOUT ≥1000mA at VOUT = 5.0V, VIN ≥3.3V device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed • IOUT ≥1500mA (Peak) at VOUT = 5.0V, VIN ≥3.3V voltage output versions are available from 3.15V to • ±2% Total DC Voltage Accuracy 5.0V. • Light-Load PFM Mode The TPS6125x operates at a regulated 3.5-MHz • Selectable Standby Mode or True Load switching frequency and enters power-save mode Disconnect During Shutdown operation at light load currents to maintain high • Thermal Shutdown and Overload Protection efficiency over the entire load current range. The PFM mode extends the battery life by reducing the • Only Three Surface-Mount External quiescent current to 36 μA (typ) during light load Components Required operation. • Total Solution Size <25mm2 In addition, the TPS6125x device can also maintain • 9-Pin NanoFreeTM (CSP) Packaging its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited APPLICATIONS allowing external load (e.g. audio amplifier) to be • Cell Phones, Smart-Phones powered with a restricted supply. In this mode, the quiescent current is reduced to 22µA. Input current in • Mono and Stereo APA Applications shutdown mode is less than 1µA (typ), which • USB Charging Port (5V) maximizes battery life. The TPS6125x offers a very small solution size due spacer to minimum amount of external components. It allows spacer the use of small inductors and input capacitors to achieve a small solution size. During shutdown, the load is completely disconnected from the battery. Figure 2. Smallest Solution Size Application Figure 1. 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. UNLESS OTHERWISE NOTED this document contains Copyright © 2011–2012, 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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