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TPS61020 采用 QFN-10 封装的可调节、1.5A 开关、96% 高效升压转换器，具有降压模式

TPS61020描述
The TPS61020 devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 200 mA while using a single-cell alkaline, and discharge it down to 0.9 V. TPS61020 can also be used for generating 5 V at 500 mA from a 3.3-V rail or a Li-Ion battery. The TPS61020 is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the TPS61020 enters the Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency。

TPS61020技术特性
 -  【TPS61020】96% Efficient Synchronous Boost Converter 
 -  【TPS61020】Output Voltage Remains Regulated When Input Voltage Exceeds Nominal Output Voltage 
 -  【TPS61020】Device Quiescent Current: 25 µA (Typ) 
 -  【TPS61020】Input Voltage Range: 0.9 V to 6.5 V 
 -  【TPS61020】Fixed and Adjustable Output Voltage Options Up to 5.5 V 
 -  【TPS61020】Power Save Mode for Improved Efficiency at Low Output Power 
 -  【TPS61020】Low Battery Comparator 
 -  【TPS61020】Low EMI-Converter (Integrated Antiringing Switch) 
 -  【TPS61020】Load Disconnect During Shutdown 
 -  【TPS61020】Over-Temperature Protection 
 -  【TPS61020】Small 3 mm × 3 mm QFN-10 Package

TPS61020应用领域
 -  All One-Cell, Two-Cell and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery Powered Products 
 -  Portable Audio Players 
 -  PDAs 
 -  Cellular Phones 
 -  Personal Medical Products 
 -  Camera White LED Flash Light
 

	TPS61020	TPS61024	TPS61025	TPS61026	TPS61027	TPS61028	TPS61029
Iout(Max)(A)	1.2	1.2	1.2	1.5	1.2	0.8	1.5
Iq(Typ)(mA)	0.025	0.025	0.025	0.025	0.025	0.025	0.025
Vin(Min)(V)	0.9	0.9	0.9	0.9	0.9	0.9	0.9
Vin(Max)(V)	6.5	6.5	6.5	5.5	6.5	6.5	5.5
Vout(Min)(V)	1.8					1.8	1.8
Vout(Max)(V)	5.5					5.5	5.5
Preset Vout(V)		3	3.3	5	5
Switching Frequency(Max)(kHz)	720	720	720	720	720	720	720
Regulated Outputs(#)	1	1	1	1	1	1	1
Duty Cycle(Max)(%)	100	100	100	100	100	100
Switch Current Limit(Typ)(A)	1.5	1.5	1.5	1.8	1.5	0.8	1.8
Operating Temperature Range(°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Pin/Package	10SON	10SON	10SON	10SON	10SON	10SON	10SON
Topology	Boost	Boost	Boost	Boost	Boost	Boost	Boost