Datasheet > MC34675AEP

MC34675AEP

更新时间： 2024-11-07 04:40:51

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		稳压器电池
页数	文件大小	规格书
24页	385K
描述
28V-Input-Voltage Single-Cell Li-Ion Battery Charger with 10mA Regulator

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MC34675AEP 数据手册

Document Number: MC34675

Rev. 3.0, 4/2008

Freescale Semiconductor

Advance Information

28V-Input-Voltage Single-Cell

Li-Ion Battery Charger with

10mA Regulator

34675

The 34675 is a high-input-voltage Li-Ion battery charger with a

4.85V/10mA linear regulator. The high input voltage, up to 28V,

eliminates the input over-voltage protection circuit required in handheld

devices such as cell phones, Bluetooth accessories, and portable

media players. The 4.85V linear regulator is capable of 10mA output

current and can be used to directly power a sub-system such as a USB

transceiver.

POWER MANAGEMENT IC

The charge cycle of the 34675 includes trickle, constant-current

(CC) and constant-voltage (CV) charge modes. The CC mode current

is programmable up to 1A, with an external resistor. The voltage across

the external resistor is also used to monitor the actual charge current.

The constant voltage is fixed at 4.2V with 0.7% accuracy over the

-40°C to 85°C temperature range. The trickle-mode current is pre-set

to 20% of the CC mode current when the battery voltage is lower than

the trickle-mode threshold. The end-of-charge (EOC) current threshold

is pre-set to 10% of the CC mode current, to save board space and

cost. A charge current thermal foldback feature limits the charge

current when the IC internal temperature rises to the preset threshold

of 120°C. The 34675 also protects the system with its input over-

voltage protection (OVP) feature. Two indication pins (PPR and CHG)

can be simply interfaced to a microprocessor or LEDs. When no power

supply is connected, or when disabled, the charger draws less than

1.0μA leakage current from the battery.

EP SUFFIX (PB-FREE)

98ASA10774D

8-PIN UDFN

ORDERING INFORMATION

Temperature

Package

Device

MC34675AEP/R2

Range (T )

-40°C to 85°C

8-UDFN

Features

• No external MOSFET, reverse-blocking diode, or current-sense resistor is required

• Guaranteed maximum 1A programmable CC mode current

•

±0.7% voltage accuracy over -40°C to 85°C

±6% current accuracy over -40°C to 85°C

• 4.85V/10mA linear regulator with a 6.8V input over-voltage protection threshold

• 28V maximum voltage for the power input with a 6.8V over-voltage protection threshold

• Trickle charge for fully discharged batteries

• Charge current monitor

• Charge current thermal foldback

• Pb-free packaging designated by suffix code EP

34675

V_IN

TO BATTERY

VIN

BAT

C_IN

GND

C_OUT

ISET

R_ISET

CHG

PPR

TO SYSTEM

DET

OFF

C_DET

Figure 1. 34675 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...24

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与MC34675AEP相关器件

型号	品牌	获取价格	描述	数据表
MC34675AEP/R2	NXP	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, 2 X 3 MM, 0.65 MM HEIGHT, 0.5 MM PITCH, ROHS
MC34675AEPR2	FREESCALE	获取价格	28V-Input-Voltage Single-Cell Li-Ion Battery Charger with 10mA Regulator
MC34676	FREESCALE	获取价格	Dual 28 V Input Voltage Charger with Linear Regulator
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

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