TPS61021A Texas instruments

TPS61021A

Уточнить цену

TPS61021A

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

The TPS61021A provides a power supply solution for portable or smart devices powered by alkaline, NiMH, Li-Mn, or Li-ion batteries. The TPS61021A is capable of outputting 3.3-V voltage and 1.5-A current from a battery discharged to as low as 1.8 V. Capable of operating with 0.5-V input voltage enables the TPS61021A to extend the battery run time. The TPS61021A operates at 2-MHz switching frequency at heavy load and enters power-save mode at light load to maintain high efficiency over the entire load current range. The device only consumes a 17-µA quiescent current from VOUT in light load condition. During shutdown, the load is completely disconnected from the input. In addition, The TPS61021A provides 4.35-V output overvoltage protection, output short circuit protection, and thermal shutdown protection. The TPS61021A offers a very small solution size due to low count of external components. It allows the use of small inductors and output capacitors with the 2-MHz switching frequency. The TPS61021A is available in 2.0-mm × 2.0-mm WSON package.

Input Voltage Range: 0.5 V to 4.4 V
0.9 V Minimum Input Voltage for Startup
Output Voltage Setting Range: 1.8 V to 4.0 V
91% Efficiency at V_IN = 2.4 V, V_OUT = 3.3 V and
I_OUT = 1.5 A
2.0-MHz Switching Frequency
I_OUT > 1.5 A at V_OUT = 3.3 V when V_IN > 1.8 V
17-µA Typical Quiescent Current
±2.5% Reference Voltage Accuracy over –40°C to
125°C
PFM Operation Mode at Light Load
True Disconnection Between Input and Output
During Shutdown
Output Over Voltage Protection
Output Short Circuit Protection
Thermal Shutdown Protection
2-mm × 2-mm WSON Package

Topology	Boost
Vin (min) (V)	0.5
Vin (max) (V)	4.4
Vout (min) (V)	1.8
Vout (max) (V)	4
Switch current limit (typ) (A)	4.3
Type	Converter
Regulated outputs (#)	1
Switching frequency (min) (kHz)	50
Switching frequency (max) (kHz)	2000
Iq (typ) (mA)	0.017
Features	Bypass Mode Pass-through Mode, Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification
Duty cycle (max) (%)	90
Operating temperature range (°C)	-40 to 125
Rating	Catalog