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TPS62050DGS Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS62050DGS Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 25 page FB PG VIN 8 LBO GND SYNC EN LBI PGND TPS62052 SW 1 6 7 3 2 9 5 4 10 Ci = 10 µF Co = 22 µF VO = 1.5 V / 800 mA L1 = 10 µH VI = 3.3 V to 10 V TYPICAL APPLICATION CIRCUIT IO – Output Current – mA 50 30 10 0.01 0.1 1 10 60 70 TPS62050 EFFICIENCY vs OUTPUT CURRENT 100 100 1 k 80 20 0 40 90 VI = 7.2 V, VO = 5 V, SYNC = L TPS62052, TPS62054 TPS62056, TPS62050, TPS62051 www.ti.com SLVS432E – SEPTEMBER 2002 – REVISED JUNE 2011 800-mA SYNCHRONOUS STEP-DOWN CONVERTER Check for Samples: TPS62052, TPS62054, TPS62056, TPS62050, TPS62051 1 FEATURES DESCRIPTION The TPS6205x devices are a family of high-efficiency 2 • High-Efficiency Synchronous Step-Down synchronous step-down dc/dc converters ideally Converter With up to 95% Efficiency suited for systems powered from a 1-cell or 2-cell Li- • 12-µA Quiescent Current (Typ) Ion battery or from a 3-cell to 5-cell NiCd, NiMH, or • 2.7-V to 10-V Operating Input Voltage Range alkaline battery. • Adjustable Output Voltage Range From 0.7 V The TPS62050 is a synchronous PWM converter with to 6 V integrated N-channel and P-channel power MOSFET switches. Synchronous rectification increases • Fixed Output Voltage Options Available in efficiency and reduces external component count. To 1.5 V, 1.8 V, and 3.3 V achieve highest efficiency over a wide load current • Synchronizable to External Clock Signal up to range, the converter enters a power-saving pulse- 1.2 MHz frequency modulation (PFM) mode at light load • High Efficiency Over a Wide Load Current currents. Operating frequency is typically 850 kHz, allowing the use of small inductor and capacitor Range in Power-Save Mode values. The device can be synchronized to an • 100% Maximum Duty Cycle for Lowest external clock signal in the range of 600 kHz to 1.2 Dropout MHz. For low noise operation, the converter can be • Low Noise Operation in Forced Fixed programmed into forced-fixed frequency in PWM Frequency PWM Operation Mode mode. In shutdown mode, the current consumption is reduced to less than 2 µA. The TPS6205x is • Internal Softstart available in the 10-pin (DGS) micro-small outline • Overtemperature and Overcurrent Protected package (MSOP) and operates over an free air • Available in 10-Pin Microsmall Outline temperature range of –40°C to 85°C. Package MSOP APPLICATIONS • Cellular Phones • Organizers, PDAs, and Handheld PCs • Low Power DSP Supply • Digital Cameras and Hard Disks 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 MATHCAD is a registered trademark of Mathsoft Incorporated. PRODUCTION DATA information is current as of publication date. Copyright © 2002–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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