LTC3890HUH#TRPBF

Frequency - Switching:	105kHz ~ 835kHz, 350kHz ~ 535kHz
Base Part Number:	LTC3890
Supplier Device Package:	32-QFN (5x5)
Package / Case:	32-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99%
Series:	PolyPhase®
Voltage - Supply (Vcc/Vdd):	4 V ~ 60 V
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LTC3890HUH#TRPBF is a high performance buck regulated synchronous step-down switching regulator controller. It is suitable for high-current regulation, uninterruptible power supplies, point of load regulation, motor control and similar distributed power applications. The device is housed in a lead-free, 3 mm × 3 mm QFN package, with an integrated internal switch for eight outputs.The LTC3890HUH#TRPBF is designed with integrated feedback and precision regulation control. It offers an 8-bit delta-sigma analog-to-digital converter (ADC) for closed loop regulation and monitoring. The device also includes a bootstrap switch and a high current, high voltage power switch, which provides excellent efficiency while enabling a wide input range and a low power start-up state.The primary features of the LTC3890HUH#TRPBF include three high power synchronous switches, wide 4V to 38V input range, up to 93% efficiency for 4V to 20V, 1.5% DC accuracy with true on-demand peak current limit protection and a fast, programmable slew rate up to 4.07A/µs. It can also be used in applications such as multi-phase buck regulators, boost converters, H-bridges and isolated power supplies.The internal loop control and regulation of the device facilitate complete closed loop control of the output voltage. The LTC3890HUH#TRPBF uses an advanced architecture that allows for simple configuration of the output voltage and integrated compensation. The compensation features provide better transient response, allowing customers to use a variety of external components to customize their power supply design.The device incorporates differential remote sensing that allows for local regulation at the point of load. The sensing is simultaneous and continuous and the speed of the sensing is adjustable. This enables it to be used in applications such as motor control and communications systems.The output voltage of the LTC3890HUH#TRPBF is adjustable in two methods: pulse-code modulation (PCM) and pulse-width modulation (PWM). The PCM is low noise and has very fast response time, while the PWM is suitable for more demanding applications and offers the highest efficiencies.The LTC3890HUH#TRPBF is designed with a number of diagnostic features for ease of use and reliability. These include programmable overcurrent protection, undervoltage lockout, thermal shutdown and digital control. Additionally, the device also supports serial communication for easy configuration and control.In conclusion, the LTC3890HUH#TRPBF is an advanced buck synchronous controller that provides high power regulation, superior stability and wide input voltage range. It offers efficient design, high current regulation, and a wide range of features. This makes it ideal for a host of applications such as uninterruptible power supplies, motor control, and communications systems.

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