RT7882中文資料立锜科技數(shù)據(jù)手冊PDF規(guī)格書

General Description

The RT7882 is a USB Type-C Power Delivery (USBC

PD) and PWM buck-boost controller with highly

integrated functions and flexibility for USB PD provider

applications. The IC has an embedded ARM CortexTMM0

MCU, which handles various functions of

communication protocol, smart control of the PWM

converter, firmware-based protections, and customized

functions. The IC features hardware-based protections,

such as inductor peak current limit, VBUS overvoltage

protection (VBUS OVP), VIN undervoltage protection

(VIN UVP), VIN overvoltage protection (VIN OVP), VO

undervoltage protection (VO UVP), and VCONN

current-limit protection, so that the protections have

faster responses and can still function even when the

MCU is not activated. The RT7882 can offer an

excellent USB PD solution for a USB-PD Provider

application with few external components and simple

PCB layout.

Features

? Support USB Type-C Power Delivery (PD)

Provider

? Type-C, USB PD and Communication Protocols

? Compliant with USB PD 3.1 Specification, USB

Type-C Cable and Connector Specification 2.1

? VCONN Output 100mW

? Support Other Proprietary Communication

Protocols through Internal MCU, DP and DM

Pins

? Integrated PWM Buck-Boost Controller

? Wide Input Voltage Range: 4.5V to 30V

? Wide Output Voltage Range: 3.3V to 21V

? Peak-Current Mode PWM Operation

? Internal Compensation for CV, CC

? Programmable PWM Switching Frequency

(200kHz to 600kHz)

? Pulse-Skipping Mode for Light-Load

Efficiency; Selectable Forced CCM Operation

? AnyPowerTM for Constant Voltage Output and

Constant Current Output

? PD Safe?

? Adjustable Converter Input Overcurrent Limit

(INOC)

? Fast Response VIN OVP/UVP Detection

? Programmable VBUS OVP and VO UVP

? Fast Response OVP for CC1/2 and D+/D-

? Adjustable External OTP/Internal OTP

? CC1/2 Output Current Limit

? CC1/2, D+/D- 25V Tolerant

? Cable Voltage Drop Compensation for VBUS

? Switching Frequency Synchronization for Better

EMI

? Adjustable Gate Drive Current for Better EMI

? Firmware-based Functions

? VIN De-Rating and Power Sharing

? Master and Slave I2C Interfaces, LED Drivers,

GPIOs

? Built-in Output Bleeders for Quick VBUS

Discharge