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TPS62691 Dataheets PDF



Part Number TPS62691
Manufacturers Texas Instruments
Logo Texas Instruments
Description 4-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER
Datasheet TPS62691 DatasheetTPS62691 Datasheet (PDF)

CSP-6 TPS62690 TPS62691 TPS62697 www.ti.com SLVS965B – MARCH 2011 – REVISED JANUARY 2012 500-mA / 600-mA, 4-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING Check for Samples: TPS62690, TPS62691, TPS62697 FEATURES 1 •2 95% Efficiency at 4MHz Operation • 19μA Quiescent Current • 4MHz Regulated Frequency Operation • High Duty-Cycle Operation • ±2% Total DC Voltage Accuracy • Best in Class Load and Line Transient • Excellent AC Load Regulation • Low Ripple Light-Load PFM Mod.

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CSP-6 TPS62690 TPS62691 TPS62697 www.ti.com SLVS965B – MARCH 2011 – REVISED JANUARY 2012 500-mA / 600-mA, 4-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING Check for Samples: TPS62690, TPS62691, TPS62697 FEATURES 1 •2 95% Efficiency at 4MHz Operation • 19μA Quiescent Current • 4MHz Regulated Frequency Operation • High Duty-Cycle Operation • ±2% Total DC Voltage Accuracy • Best in Class Load and Line Transient • Excellent AC Load Regulation • Low Ripple Light-Load PFM Mode • ≥40dB VIN PSRR (1kHz to 10kHz) • Internal Soft Start, 250-μs Start-Up Time • Integrated Active Power-Down Sequencing (Optional) • Current Overload and Thermal Shutdown Protection • Three Surface-Mount External Components Required (One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors) • Complete Sub 1-mm Component Profile Solution • Total Solution Size <12 mm2 • Available in a 6-Pin NanoFree™ (CSP) Efficiency - % Power Loss - mW 100 VI = 3.6 V, 95 VO = 2.85 V 90 Efficiency 85 PFM/PWM Operation 80 75 Power Loss 70 PFM/PWM Operation 65 60 55 50 0.1 1 10 100 IO - Load Current - mA 150 135 120 105 90 75 60 45 30 15 0 1000 Figure 1. Efficiency vs. Load Current APPLICATIONS • LDO Replacement • Cell Phones, Smart-Phones • Portable Audio, Portable Media • DC/DC Micro Modules DESCRIPTION The TPS6269x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6269x supports up to 600-mA load current, and allows the use of 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. Different fixed voltage output versions are available from 2.2V to 2.9V. The TPS6269x operates at a regulated 4-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 19μA (typ) during light load operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high. This feature, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency. VIN 3.15 V .. 4.8 V CI 4.7 mF TPS62690 VIN EN L SW 1.0 mH FB GND MODE VOUT 2.85 V @ 500mA CO 4.7 mF Figure 2. Smallest Solution Size Application 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 is a trademark of Texas Instruments. 2 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 © 2011–2012, Texas Instruments Incorporated TPS62690 TPS62691 TPS62697 SLVS965B – MARCH 2011 – REVISED JANUARY 2012 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. TA -40°C to 85°C PART NUMBER TPS62690 TPS62691 (4) TPS62697 ORDERING INFORMATION(1) OUTPUT VOLTAGE (2) DEVICE SPECIFIC FEATURE 2.85V 2.2V 2.8V 500mA peak output current 600mA peak output current 500mA peak output current ORDERING (3) TPS62690YFF TPS62691YFF TPS62697YFF PACKAGE MARKING CHIP CODE PB SU WA (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. (2) Internal tap points are available to facilitate output voltages in 25mV increments. (3) The YFF package is available in tape and reel. Add a R suffix (e.g. TPS62690YFFR) to order quantities of 3000 parts. Add a T suffix (e.g. TPS62690YFFT) to order quantities of 250 parts. (4) Product preview. Contact TI factory for more information. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted)(1) Input Voltage Voltage at VIN(2)(3), SW(3) Voltage at FB(3) Voltage at EN, MODE (3) Peak output current, IO Power dissipation Operating temperature range, TA (4) Operating junction temperature, TJ Storage temperature range, Tstg Human body model ESD (5) Charge device model Machine model TPS62690, TPS62697 TPS62691 MIN –0.3 –0.3 –0.3 MAX 6 3.6 VI + 0.3 500 UNIT V V V mA 600 mA Internally limited –40 85 °C 150 °C –65 150 °C 2 kV 1 kV 200 V (1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the devi.


TPS62690 TPS62691 TPS62697


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