Datasheet > MC34676

MC34676

更新时间： 2024-09-17 11:09:03

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		稳压器
页数	文件大小	规格书
27页	1370K
描述
Dual 28 V Input Voltage Charger with Linear Regulator

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MC34676 数据手册

Document Number: MC34676

Rev. 1.0, 10/2008

Freescale Semiconductor

Advance Information

Dual 28 V Input Voltage Charger

with Linear Regulator

34676

The 34676 is a dual 28 V input voltage and fully-integrated single

cell Li-Ion battery charger, targeting smart handheld applications. One

of the inputs is optimized for charging with a USB port, and the second

is optimized for an AC/DC adapter power source. The charger has two

28 V power devices, to eliminate the need of any external power

source selection and input over-voltage protection circuitry. Each of the

power devices independently controls the charge current from the

input, and performs as an independent charger. Only one of the two

chargers operate at a time.

BATTERY CHARGER

EP SUFFIX (PB-FREE)

98ASA10814D

The AC charger current and the USB charger current are

programmable, up to 1.2 A and 400 mA, with an external resistor

respectively. The voltage across the two external resistors is also used

to monitor the actual charge current through each charger respectively.

The EOC current of both chargers is the same, and programmable by

an external resistor. The 4.85 V regulator can be used to power a sub-

system directly.

12-PIN µDFN

ORDERING INFORMATION

Temperature

Package

Device

Range (T )

The 34676 has a 5% constant current accuracy for the AC Charger

over -40 to 85^oC, and a 1.0% constant voltage accuracy over -40 to

85^oC. A charge current thermal foldback feature, limits the charge

current when the IC internal temperature rises to a preset threshold.

MC34676BEP/R2

-40°C to 85°C

12-UDFN

Features

Applications

• ±1.0% voltage accuracy over -45 to 85°C

• No external MOSFET, reverse blocking diode, or

current sense resistor are required

• Additional voltage regulated output powered by USB

input

•

Cell Phone

Smart Phone

PDA, PMP, PND,

Handheld Portable Devices

Portable Medical Devices

• Battery detection input

• Charge current monitor with thermal limits

• Integrated input over-voltage protection

• Pb-free packaging designated by suffix code EP

34676B

BAT

BATDET

USBOUT

USB

GND

C₄

C₃

VDDIO

IMIN

PPR

CHG

IUSB ISET USBEN

MCU

R_IMIN

R_IUSBR_ISET

USB

Figure 1. 34676B 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...27

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与MC34676相关器件

型号	品牌	获取价格	描述	数据表
MC34676BEP/R2	FREESCALE	获取价格	Dual 28 V Input Voltage Charger with Linear Regulator
MC3469N	TI	获取价格	MC3469N
MC3469P	MOTOROLA	获取价格	SPECIALTY INTERFACE CIRCUIT, PDIP16, 648-08
MC3470	TI	获取价格	FLOPPY DISK READ-AMPLIFIER SYSTEMS
MC34700	FREESCALE	获取价格	9 to 18V, Quad Output, Integrated MOSFET Power Supply
MC34700_09	FREESCALE	获取价格	9.0 to 18 V, Quad Output, Integrated MOSFET Power Supply
MC34700EP	FREESCALE	获取价格	9 to 18V, Quad Output, Integrated MOSFET Power Supply
MC34700EP/R2	FREESCALE	获取价格	9.0 to 18 V, Quad Output, Integrated MOSFET Power Supply
MC34700EPR2	FREESCALE	获取价格	9 to 18V, Quad Output, Integrated MOSFET Power Supply
MC34701	FREESCALE	获取价格	1.5A Switch-Mode Power Supply with Linear Regulator

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