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TPS62311 Dataheets PDF



Part Number TPS62311
Manufacturers Texas Instruments
Logo Texas Instruments
Description 500-mA 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER
Datasheet TPS62311 DatasheetTPS62311 Datasheet (PDF)

www.ti.com TPS62300, TPS62301, TPS62302 QFN-10 CSP-8 TPS62303, TPS62304, TPS62305, TPS62311, TPS62313, TPS62315, TPS62320, TPS62321 SLVS528E – JULY 2004 – REVISED NOVEMBER 2007 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING FEATURES 1 •234 Up to 93% Efficiency at 3-MHz Operation • Up to 500-mA Output Current at VI = 2.7 V • 3-MHz Fixed Frequency Operation • Best in Class Load and Line Transient • Complete 1-mm Component Profile Solution • -0.5% / +1.3% PWM DC Volta.

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www.ti.com TPS62300, TPS62301, TPS62302 QFN-10 CSP-8 TPS62303, TPS62304, TPS62305, TPS62311, TPS62313, TPS62315, TPS62320, TPS62321 SLVS528E – JULY 2004 – REVISED NOVEMBER 2007 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING FEATURES 1 •234 Up to 93% Efficiency at 3-MHz Operation • Up to 500-mA Output Current at VI = 2.7 V • 3-MHz Fixed Frequency Operation • Best in Class Load and Line Transient • Complete 1-mm Component Profile Solution • -0.5% / +1.3% PWM DC Voltage Accuracy Over Temperature • 35-ns Minimum On-Time • Power-Save Mode Operation at Light Load Currents • Fixed and Adjustable Output Voltage • Only 86-µA Quiescent Current • 100% Duty Cycle for Lowest Dropout • Synchronizable On the Fly to External Clock Signal • Integrated Active Power-Down Sequencing (TPS6232x only) • Available in a 10-Pin QFN (3 x 3 mm), 8-Pin NanoFree™, and NanoStar™ (CSP) Packaging APPLICATIONS • Cell Phones, Smart-Phones • WLAN and Bluetooth™ Applications • Micro DC-DC Converter Modules • PDAs, Pocket PCs • USB-Based DSL Modems • Digital Cameras 2.7 V . . 6 V VI C1 4.7 µF TPS62303YZD A2 VIN SW B1 B2 EN VOUT D1 L1 1 µH C1 MODE/SYNC ADJ C2 A1 GND FB D2 VO C2 1.8 V/500 mA 4.7 µF Figure 1. Smallest Solution Size Application (Fixed Output Voltage) DESCRIPTION The TPS623xx device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS623xx supports up to 500-mA load current and allows the use of tiny, low cost chip inductor and capacitors. The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery or by 3-cell NiMH/NiCd batteries. With an output voltage range from 5.4 V down to 0.6 V, the device supports the low-voltage TMS320™ DSP family, processors in smart-phones, PDAs as well as notebooks, and handheld computers. The TPS62300 operates at 3-MHz fixed switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low noise applications, the device can be forced into fixed frequency PWM mode by pulling the MODE/SYNC pin high. The device can also be synchronized to an external clock signal in the range of 3 MHz. In the shutdown mode, the current consumption is reduced to less than 1 µA. The TPS623xx is available in a 10-pin leadless package (3 x 3 mm QFN) and an 8-pin chip-scale package (CSP). Efficiency − % 100 90 VI = 3.6 V, VO = 1.8 V 80 70 60 50 40 30 20 10 0 0.1 L = 2.2 µH, CO = 4.7 µF 1 10 100 IO − Load Current − mA 1k 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. NanoFree, NanoStar, TMS320 are trademarks of Texas Instruments. 2 Bluetooth is a trademark of Bluetooth SIG, Inc. 3 PowerPAD is a trademark of Texas Instsruments. 4 PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2004–2007, Texas Instruments Incorporated TPS62300, TPS62301, TPS62302 TPS62303, TPS62304, TPS62305, TPS62311, TPS62313, TPS62315, TPS62320, TPS62321 SLVS528E – JULY 2004 – REVISED NOVEMBER 2007 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ORDERING INFORMATION TA -40°C to 85°C PART NUMBER TPS62300 TPS62301 TPS62302 TPS62303 TPS62304 TPS62305 TPS62311 TPS62313 TPS62315 TPS62320 OUTPUT VOLTAGE Adjustable 1.5 V 1.6 V 1.8 V 1.2 V 1.875 V 1.5 V 1.8 V 1.875 V Adjustable TPS62321 1.5 V UNDERVOLTAGE LOCKOUT 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2V 2V 2V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V PACKAGE QFN-10 CSP-8 QFN-10 CSP-8 QFN-10 CSP-8 QFN-10 CSP-8 QFN-10 CSP-8 QFN-10 CSP-8 CSP-8 CSP-8 CSP-8 QFN-10 CSP-8 CSP-8 QFN-10 CSP-8 CSP-8 ORDERING (1) (2) TPS62300DRC TPS62300YZD TPS62301DRC TPS62301YZD TPS62302DRC TPS62302YZD TPS62303DRC TPS62303YZD TPS62304DRC TPS62304YZD TPS62305DRC TPS62305YZD TPS62311YZD TPS62313YZD TPS62315YZ TPS62320DRC TPS62320YZD TPS62320YED TPS62321DRC TPS62321YZD TPS62321YED PACKAGE MARKING AMN N/A AMO N/A AMQ N/A AMR N/A AMS N/A ANU N/A N/A N/A N/A AMX N/A N/A AMY N/A N/A (1) The YZD, YED and YZ packages are available in tape and reel. Add a R suffix (e.g. TPS62300YxDR) to order quantities of 3000 parts. Add a T suffix (e.g. TPS62300YxDT) to order quantities of 250 parts. The DRC package is available in tape and reel. Add a R suffix (e.g. TPS62300.


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