TPS543320 Series

4-V to 18-V, 3-A synchronous SWIFT™ step-down converter

Catalog

4-V to 18-V, 3-A synchronous SWIFT™ step-down converter

Part	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Current - Output	Output Configuration	Output Type	Voltage - Output (Min/Fixed) [Min]	Frequency - Switching	Package / Case	Function	Topology	Voltage - Input (Min) [Min]	Voltage - Output (Max) [Max]	Synchronous Rectifier	Voltage - Input (Max) [Max]	Mounting Type
Texas Instruments TPS543320RPYR	1	150 °C	-40 °C	14-VQFN-HR (2.5x3)	3 A	Positive	Adjustable	0.5 V	1 MHz 1.5 MHz 2.2 MHz 500 kHz 750 kHz	14-PowerVFQFN	Step-Down	Buck	4 V	5.5 V		18 V	Surface Mount

Catalog

4-V to 18-V, 3-A synchronous SWIFT™ step-down converter

Key Features

• Fixed-frequency, internally-compensated advanced current mode (ACM) controlIntegrated 25-mΩ and 13.9-mΩ MOSFETsInput voltage range: 4 V to 18 VOutput voltage range: 0.5 V to 7 VThree selectable PWM ramp options to optimize the control loop performanceFive selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHzSynchronizable to an external clock0.5-V, ±0.5% voltage reference accuracy over full temperature rangeSelectable soft-start times: 0.5 ms, 1 ms, 2 ms, and 4 msMonotonic start-up into pre-biased outputsSelectable current limits to support 3-A and 2-A operationEnable with adjustable input undervoltage lockoutPower-good output monitorOutput overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protectionPin-to-pin compatible withTPS543820andTPS543620–40°C to 150°C operating junction temperature2.5-mm × 3-mm, 14-pin VQFN-HR package with 0.5-mm pitchFixed-frequency, internally-compensated advanced current mode (ACM) controlIntegrated 25-mΩ and 13.9-mΩ MOSFETsInput voltage range: 4 V to 18 VOutput voltage range: 0.5 V to 7 VThree selectable PWM ramp options to optimize the control loop performanceFive selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHzSynchronizable to an external clock0.5-V, ±0.5% voltage reference accuracy over full temperature rangeSelectable soft-start times: 0.5 ms, 1 ms, 2 ms, and 4 msMonotonic start-up into pre-biased outputsSelectable current limits to support 3-A and 2-A operationEnable with adjustable input undervoltage lockoutPower-good output monitorOutput overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protectionPin-to-pin compatible withTPS543820andTPS543620–40°C to 150°C operating junction temperature2.5-mm × 3-mm, 14-pin VQFN-HR package with 0.5-mm pitch

Description

The TPS543320 is a high-efficiency 18-V, 3-A synchronous buck converter employing an internally-compensated, fixed-frequency Advanced Current Mode control. The device is capable of providing high efficiency while running at a switching frequency up to 2.2 MHz. The device is in a small 2.5-mm × 3-mm HotRod™ VQFN package, which coupled with high efficiency at high frequency, makes it optimal for designs requiring a small solution size. The fixed frequency controller can operate from 500 kHz to 2.2 MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, selectable soft start times, montonic start-up into pre-biased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections. The TPS543320 is a high-efficiency 18-V, 3-A synchronous buck converter employing an internally-compensated, fixed-frequency Advanced Current Mode control. The device is capable of providing high efficiency while running at a switching frequency up to 2.2 MHz. The device is in a small 2.5-mm × 3-mm HotRod™ VQFN package, which coupled with high efficiency at high frequency, makes it optimal for designs requiring a small solution size. The fixed frequency controller can operate from 500 kHz to 2.2 MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, selectable soft start times, montonic start-up into pre-biased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.