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TPS650243-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS650243-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 33 page TPS650241-Q1, TPS650243-Q1, TPS650244-Q1 www.ti.com SLVS994A – SEPTEMBER 2009 – REVISED MARCH 2011 POWER MANAGEMENT ICs FOR Li-ION POWERED SYSTEMS Check for Samples: TPS650241-Q1, TPS650243-Q1, TPS650244-Q1 1 FEATURES APPLICATIONS • PDA • Qualified for Automotive Applications • Cellular/Smart Phone • 1.6-A, 1.0-A or 0.8-A, 97% Efficient Step-Down • GPS Converter for System Voltage (VDCDC1) • Digital Still Camera – 3.3-V or 2.80-V or Adjustable • Split Supply DSP and Microprocessor • 1.6-A, 1.0-A or 0.8-A, up to 95% Efficient Solutions: Samsung ARM-Based Processors, Step-Down Converter for Memory Voltage etc. (VDCDC2) – 1.8 V or 2.5 V or Adjustable DESCRIPTION • 0.8-A 90% Efficient Step-Down Converter for The TPS65024x are integrated Power Management Processor Core (VDCDC3) ICs for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. • Three Selectable Voltages for VDCDC3 The TPS65024x provide three highly efficient, – TPS650241 step-down converters targeted at providing the core – DEFDCDC3 = LOW: VO = 0.9 V voltage, peripheral, I/O and memory rails in a processor based system. All three step-down – DEFDCDC3 = HIGH: VO = 1.375 V converters enter a low power mode at light load for – TPS650243 maximum efficiency across the widest possible range – DEFDCDC3 = LOW: VO = 1.0 V of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin – DEFDCDC3 = HIGH: VO = 1.2 V high. The TPS65024x also integrate two general – TPS650244 purpose 200-mA LDO voltage regulators, which are – DEFDCDC3 = LOW: VO = 1.55 V enabled with an external input pin. Each LDO – DEFDCDC3 = HIGH: VO = 1.6 V operates with an input voltage range between 1.5 V and 6.5 V, allowing them to be supplied from one of • 30-mA LDO for Vdd_alive the step-down converters or directly from the battery. • Two 200-mA General Purpose LDOs (LDO1 The output voltage of the LDOs can be set with an and LDO2) external resistor divider for maximum flexibility. • Dynamic Voltage Management for Processor Additionally there is a 30-mA LDO typically used to provide power in a processor based system to a Core voltage rail that is always on. TPS65024x provide • LDO1 and LDO2 Voltage Externally Adjustable voltage scaling on DCDC3 using the DEFDCDC3 pin. • Separate Enable Pins for Inductive Converters This pin either needs to be connected to a logic HIGH or logic LOW level to set the output voltage of • 2.25-MHz Switching Frequency DCDC3. TPS65024x come in a small 5-mm x 5-mm • 85- μA Quiescent Current 32-pin QFN package (RHB). • Thermal Shutdown Protection ORDERING INFORMATION(1) TA PACKAGE(2) ORDERABLE PART NUMBER TOP-SIDE MARKING TPS650241QRHBRQ1 TPS650241Q –40°C to 125°C QFN – RHB Reel of 3000 TPS650243QRHBRQ1 TPS650243Q –40°C to 85°C TPS650244IRHBRQ1 TPS650244Q (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. (2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. 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. PRODUCTION DATA information is current as of publication date. Copyright © 2009–2011, 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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