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TPS62420 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS62420 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 37 page V OUT2 SW1 FB1 SW2 ADJ2 DEF_1 OUT2 C IN 10 F VIN2.5V – 6V VIN EN_1 EN_2 MODE/ DATA TPS62420 GND Upto1000mA R21 360k R22 180k =1.8V L2 2.2 H C =22 µF C ff2 33pF upto600mA R11 270k R12 180k V OUT1 =1.5V L1 2.2 H C OUT1 =22 µF 0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100 1000 IOUT mA V IN =3.6V MODE/DATA =0 V OUT1 =1.5V V OUT2 =1.8V TPS62420, TPS62421 www.ti.com SLVS676C – JUNE 2006 – REVISED JUNE 2010 2.25MHz 600mA/1000mA Dual Step Down Converter In Small 3x3mm QFN Package Check for Samples: TPS62420, TPS62421 1 FEATURES DESCRIPTION 2 • High Efficiency—up to 95% • VIN Range From 2.5 V to 6 V The TPS62420 device is a synchronous dual step-down DC-DC converter optimized for battery • 2.25 MHz Fixed Frequency Operation powered portable applications. It provides two • Output Current 600 mA and 1000 mA independent output voltage rails powered by 1-cell • Adjustable Output Voltage From 0.6 V to VIN Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3V or 5V • Pin Selectable Output Voltage Supports voltage rail. Simple Dynamic Voltage Scaling With an input voltage range of 2.5V to 6V, the • EasyScale™ Optional One Pin Serial Interface TPS62420 is ideal to power portable applications like for Dynamic Output Voltage Adjustment smart phones, PDAs, and other portable equipment. • Power Save Mode at Light Load Currents With the EasyScale™ serial interface the output • 180° Out of Phase Operation voltages can be modified during operation. It • Output Voltage Accuracy in PWM Mode ±1% therefore supports Dynamic Voltage Scaling for low • Typical 32 mA Quiescent Current for both power DSP and processors. Converters The TPS62420 operates at 2.25MHz fixed switching • 100% Duty Cycle for Lowest Dropout frequency and enter the Power Save Mode operation at light load currents to maintain high efficiency over • Available in a 10-Pin QFN (3×3mm) the entire load current range. For low noise applications the devices can be forced into fixed APPLICATIONS frequency PWM mode by pulling the MODE/DATA • Cell Phones, Smart-phones pin high. In the shutdown mode, the current • PDAs, Pocket PCs consumption is reduced to 1.2mA. The device allows • OMAP™ and Low Power DSP Supply the use of small inductors and capacitors to achieve a small solution size. • Portable Media Players • Digital Radio The TPS62420 is available in a 10-pin leadless • Digital Cameras package (3×3mm QFN) 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 EasyScale, OMAP, PowerPAD are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2010, 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. |
Similar Part No. - TPS62420_14 |
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Similar Description - TPS62420_14 |
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