TPS61022 Texas instruments

TPS61022

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TPS61022

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Описание

The TPS61022 provides a power supply solution for portable equipment and IoT devices powered by various batteries and super capacitors. The TPS61022 has minimum 6.5-A valley switch current limit over full temperature range. With a wide input voltage range of 0.5 V to 5.5 V, the TPS61022 supports supercapacitor backup power applications, which may deeply discharge the supercapacitor.The TPS61022 operates at 1-MHz switching frequency when the input voltage is above 1.5 V. the switching frequency decreases gradually to 0.6 MHz when the input voltage is below 1.5 V down to 1 V. A MODE pin sets the TPS61022 operating either in power-save mode or forced PWM mode in light load condition. The TPS61022 only consumes a 26-µA quiescent current from VOUT in light load condition. During shutdown, the load is completely disconnected from the input power. The TPS61022 has 5.7-V output overvoltage protection, output short-circuit protection, and thermal shutdown protection.The TPS61022 offers a very small solution size with its 2-mm × 2-mm VQFN package and minimum amount of external components.

Input voltage range: 0.5 V to 5.5 V
1.8-V minimum input voltage for start-up
Output voltage setting range: 2.2 V to 5.5 V
Two 12-mΩ (LS) / 18-mΩ (HS) MOSFETs
8-A valley switching current limit
94.7% efficiency at V_IN = 3.6 V, V_OUT = 5 V and I_OUT = 3 A
1-MHz switching frequency when V_IN > 1.5 V and 0.6-MHz switching frequency when V_IN < 1 V
±2.5% reference voltage accuracy over –40°C to +125°C
Pin-selectable auto PFM operation mode or forced PWM operation mode at light load
Pass-through mode when V_IN > V_OUT
True disconnection between input and output during shutdown
Output overvoltage and thermal shutdown protections
Output short-circuit protection
2-mm × 2-mm VQFN 7-pin package

Topology	Boost
Vin (min) (V)	0.5
Vin (max) (V)	5.5
Vout (min) (V)	2.2
Vout (max) (V)	5.5
Switch current limit (typ) (A)	8
Type	Converter
Regulated outputs (#)	1
Switching frequency (min) (kHz)	600
Switching frequency (max) (kHz)	1000
Iq (typ) (mA)	0.027
Features	Bypass Mode Pass-through Mode, Enable, Light Load Efficiency, Load Disconnect, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed
Duty cycle (max) (%)	97
Operating temperature range (°C)	-40 to 125
Rating	Catalog