Datasheet > MC34825EP/R2

MC34825EP/R2

更新时间： 2024-11-08 11:09:03

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		/
页数	文件大小	规格书
39页	852K
描述
Micro-USB Interface IC Supporting Universal Charging Solution and Wired Accessories

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MC34825EP/R2 数据手册

Document Number: MC34825

Rev 1.0, 8/2009

Freescale Semiconductor

Advance Information

Micro-USB Interface IC

Supporting Universal Charging

Solution and Wired Accessories

34825

The 34825 is designed to support the Universal Charging Solution

(UCS) recommended by the OMTP (Open Mobile Terminal Platform),

as well as to use the same 5-pin micro or mini-USB connector for other

wired accessories. The 34825 supports various types of external power

supplies, such as a dedicated ac/dc adapter or a USB port, to charge

the battery. It has functions built in to identify the type of the power

supply, and sets low or high charging current, based on the current

capability of the power supply. The 34825 monitors the power supply,

and offers an up to 28 V of over-voltage protection (OVP) to the cell

phone against failed power supplies. The 34825 also contains analog

switches to multiplex the 5 pins, to support UART and high speed USB

data communication, mono or stereo audio headset with or without a

microphone and a cord remote controller, manufacturing or research-

and-development (R/D) test cables, and other accessories.

INTERFACE IC

(PB-FREE)

98ASA00037D

20-PIN QFN

ORDERING INFORMATION

The 34825 monitors both the VBUS status and the resistance

between the ID pin and the ground to identify the accessory being

plugged into the mini or micro-USB connector. A high-accuracy 5-bit

ADC is offered to distinguish 32 levels of ID resistance that are

assigned to buttons in a cord remote controller or to identification (ID)

resistors of accessories. After identifying the attached accessory, the

34825 sends an interrupt signal to a host IC and the host IC can

configure the analog switches via an I²C serial bus for further actions.

When the accessory is detached from the cell phone, an interrupt signal

is also sent to inform the host.

Temperature

Package

Device

Range (T )

3mm X 3mm

MC34825EP/R2

-40°C to 85°C

UTQFN

Features

• Identifies various types of power supplies to set low or high

battery-charging-current levels

• Supports 32 ID resistance values with a high accuracy 5-

bit ADC

• Internal power switch to offer OVP against up to 28 V

failed power supply input

• Supports stereo/mono headset with or without microphone

and remote controller with pure passive components

• Supports USB or UART R/D test cables

• High speed (480 Mbps) USB 2.0 compliant

• Accessory attachment and detachment detection with an

interrupt signal to the host IC

• I²C interface

• 10 μA quiescent current in Standby mode

• Pb-free packaging designated by suffix code EP

34825

VDDIO

BASEBAND

VDD

ISET

CHARGER

Li+

GPIO

INT

I C_SDA

I C_SCL

I C

RXD

TXD

UART

D+

D-

USB XCVR

OUT

VBUS

BUS

TEST1

TEST2

TEST PORT

AUDIO

D+

D-

SPK_L

SPK_R

MIC

GND

USB CONNECTOR

Figure 1. 34825 Simplified Application Diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...39

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与MC34825EP/R2相关器件

型号	品牌	获取价格	描述	数据表
MC34827A1EP	NXP	获取价格	SPECIALTY INTERFACE CIRCUIT, QCC20, 3 X 3 MM, 0.6 MM HEIGHT, 0.40 MM PITCH, ROHS COMPLIANT
MC34827A1EPR2	NXP	获取价格	Micro/Mini USB Interface IC, 28V over-voltage protection, QFN 20, Reel
MC34827A2EPR2	NXP	获取价格	SPECIALTY INTERFACE CIRCUIT, QCC20, 3 X 4 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIAN
MC3482AL	MOTOROLA	获取价格	8-BIT DRIVER, INVERTED OUTPUT, CDIP20, CERAMIC, DIP-20
MC3482AP	MOTOROLA	获取价格	IC,LATCH,SINGLE,8-BIT,S-TTL,DIP,20PIN,PLASTIC
MC3482BL	MOTOROLA	获取价格	8-BIT DRIVER, TRUE OUTPUT, CDIP20, CERAMIC, DIP-20
MC3482BP	MOTOROLA	获取价格	D Latch, 1-Func, 8-Bit, TTL, PDIP20
MC34830	FREESCALE	获取价格	HD to SD Adjustable Bandwidth Video Buffer with DC Restore
MC34844	FREESCALE	获取价格	10 Channel LED Backlight Driver with Integrated Power Supply
MC34844_10	FREESCALE	获取价格	10 Channel LED Backlight Driver

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