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TPS62043DRCR ,1.6-V Output, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10ELECTRICAL CHARACTERISTICS (1)V = 3.6 V, V = 1.8 V, I = 600 mA, EN = VIN, T = −40°C to 85°C typic ..
TPS62044DGQ ,1.8-V Output, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10ELECTRICAL CHARACTERISTICS (1)V = 3.6 V, V = 1.8 V, I = 600 mA, EN = VIN, T = −40°C to 85°C typic ..
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TPS62040-TPS62040DGQ-TPS62040DGQR-TPS62040DGQR.-TPS62040DGQRG4-TPS62040DRCR-TPS62040DRCRG4
Adjustable, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10
TPS62040
TPS62042, TPS62043
TPS62044, TPS62046
SLVS463B − JUNE 2003 − REVISED OCTOBER 2005
1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
FEATURES Up to 95% Conversion Efficiency Typical Quiescent Current: 18 µA Load Current: 1.2 A Operating Input Voltage Range: 2.5 V to 6.0 V Switching Frequency: 1.25 MHz Adjustable and Fixed Output Voltage Power Save Mode Operation at Light loadCurrents 100% Duty Cycle for Lowest Dropout Internal Softstart Dynamic Output Voltage Positioning Thermal Shutdown Short-Circuit Protection 10 Pin MSOP PowerPad™ Package 10 Pin QFN 3 X 3 mm Package
APPLICATIONS PDA, Pocket PC and Smart Phones USB Powered Modems CPUs and DSPs PC Cards and Notebooks xDSL Applications Standard 5-V to 3.3-V Conversion
DESCRIPTIONThe TPS6204x family of devices are high efficiency
synchronous step-down dc-dc converters optimized for
battery powered portable applications. The devices areideal for portable applications powered by a single Li-Ionbattery cell or by 3-cell NiMH/NiCd batteries. With an
output voltage range from 6.0 V down to 0.7 V, the devicessupport low voltage DSPs and processors in PDAs,
pocket PCs, as well as notebooks and subnotebookcomputers. The TPS6204x operates at a fixed switching
frequency of 1.25 MHz and enters the power save modeoperation at light load currents to maintain high efficiencyover the entire load current range. For low noise
applications, the devices can be forced into fixed
frequency PWM mode by pulling the MODE pin high. TheTPS6204x supports up to 1.2-A load current.
TPS6204xVI
2.5 V to 6 V
0.7 V to VI /1.2 A
22 µF
22 µF
Typical Application Circuit 1.2-A Output Current
100 0.01 0.1 1 10 100 1 k 10 k
Efficiency
EFFICIENCY
LOAD CURRENT
IL − Load Current − mA
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