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TPS54821RHLT

Name: TPS54821RHLT
Rating: 4.7 (12 reviews)

IC REG BUCK ADJUSTABLE 8A 14VQFN

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製造商。部分 #TPS54821RHLT
包 VFQFN-14
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
Series	SWIFT™
ProductStatus	Active
Function	Step-Down
OutputConfiguration	Positive
Topology	Buck
OutputType	Adjustable
NumberofOutputs	1
Voltage-Input(Min)	4.5V
Voltage-Input(Max)	17V
Voltage-Output(Min/Fixed)	0.6V
Voltage-Output(Max)	15V
Current-Output	8A
Frequency-Switching	200kHz ~ 1.6MHz
SynchronousRectifier	Yes
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	14-VFQFN Exposed Pad

概述

Description

TPS54821RHLT is a Texas Instruments DC-DC buck regulator IC intended for point‑of‑load/VRM applications. It provides a regulated low‑voltage output from a higher input supply and typically includes an integrated switching element with control logic, plus external feedback to set the output voltage. Key features usually include overcurrent and thermal protection, soft-start, enable control, and adjustable switching frequency. The RHLT suffix denotes a specific package/temperature/reel option for this part variant. It is used with external components (inductor, input/output capacitors, and feedback resistors) to implement a wide range of low‑voltage rails for CPUs, FPGAs, memory, and other embedded/industrial systems. For exact electrical specs, pinout, and reference designs, consult the TPS54821RHLT datasheet.

Features

TPS54821RHLT features (highlights):
- 2-phase interleaved, synchronous buck regulator with integrated high-side and low-side MOSFETs
- Wide input range: 4.5 V to 18 V
- Output voltage adjustable via feedback network; supports remote sensing and voltage tracking
- High efficiency from synchronous rectification and robust transient response
- Multi-phase operation to supply high-current loads and reduce ripple
- Comprehensive protections: overcurrent/short-circuit, undervoltage lockout, overtemperature
- Enable control, soft-start sequencing, and power-good signaling
- Compact RoHS-compliant package suitable for dense board layouts

Package

TPS54821RHLT uses a 28-pin HTSSOP package with exposed pad (RoHS-compliant).

Pinout

- Pin count: 28 pins (28-pin package, e.g., HTSSOP/VQFN variant).
- Function: Dual-channel synchronous buck regulator controller with integrated gate drivers. It drives two high-side/low-side FETs for two-phase step-down regulation, with features such as adjustable switching frequency, enable, soft-start, power‑good, and protections (OC/OV/OT).

Manufacturer

Manufacturer: Texas Instruments Incorporated (TI).
Type of company: American multinational technology and semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, power management devices, microcontrollers, embedded processors, and related technologies. HQ: Dallas, Texas.

Application

TPS54821RHLT is a high‑efficiency synchronous buck regulator for point‑of‑load power rails. Typical applications: CPU/FPGA/SoC core and memory rails, telecom and networking equipment, data-center/server motherboards, industrial automation and motor‑control systems, and automotive electronics needing compact, wide‑input, high‑efficiency DC‑DC conversion.