fs3871 Fortune Semiconductor Corporation, fs3871 Datasheet

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fs3871

Manufacturer Part Number
fs3871
Description
Linear Charge Management Ic For Lithium-ion And Lithium-polymer
Manufacturer
Fortune Semiconductor Corporation
Datasheet
REV. 1.2
FS3871-DS-12_EN
MAR. 2007
Datasheet
FS3871
LINEAR CHARGE MANAGEMENT IC FOR LITHIUM-ION AND LITHIUM-POLYMER

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fs3871 Summary of contents

Page 1

... REV. 1.2 FS3871-DS-12_EN Datasheet FS3871 LINEAR CHARGE MANAGEMENT IC FOR LITHIUM-ION AND LITHIUM-POLYMER MAR. 2007 ...

Page 2

... This manual contains new product information. Fortune Semiconductor Corporation reserves the rights to modify the product specification without further notice. No liability is assumed by Fortune Semiconductor Corporation as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.2 FS3871 2/14 ...

Page 3

... The available 8-pin TSSOP-8/MSOP-8 package is offered for balanced area and cost effective requirements for size-sensitive applications. The FS3871 is suitable for the control of charge sequences of a variety of portable battery-powered applications, such as cellular phone’s travel and base charger devices, digital camera, digital-video camcorder (DV), MP3 player ,etc ...

Page 4

... Voltage sense input 3 1 Supply voltage 4 2 Temperature sense input 5 3 Charge status output 6 4 Ground 7 5 Charge control output 8 6 Charge-rate compensation input Top line: Part Number. Marking Bottom line : Lot No. FS3871D ******* 3871E ******* FS3871 Package Type TSSOP-8 MSOP-8 Description 4/14 ...

Page 5

... Functional Block Diagram FS3871 Functional Block Diagram Rev. 1.2 FS3871 5/14 ...

Page 6

... Typical Application Circuit Figure1. FS3871 Typical Application for one cell 10. Charge profile Rev. 1.2 Figure2. FS3871 6/14 ...

Page 7

... Voltage at pin SNS, relative to VCC for I(PRECHG) high-side sensing, 0°C ≤ TA ≤ 50°C, VCC = 5 V Rev. 1.2 -0.3 to VCC+0 MIN 4.158 VO(REG)–98 mV 3.04 95.4 90 29.1 58.3 1.87 VCC-0.5 5 –30 3 FS3871 Rating Unit -0 300 mW °C – °C -40~125 °C 300 TYP MAX 4 ...

Page 8

... Typical Operating Characteristics (Cin=0.1µF, Cout=4.7µF, TA=+25℃, unless otherwise noted.) VO(REG) VS Temperature VRCH VS Temperature Vmin VS Temperature Rev. 1.2 FS3871 8/14 ...

Page 9

... The conditioning current also minimizes heat dissipation in the external pass-element during the initial stage of charge. See Figure 2. Sleep mode The FS3871 enters the sleep mode if the VCC falls below the voltage at the BAT input. This feature prevents draining the battery pack during the absence of VCC. ...

Page 10

... V R (SNS) 15. Application Information Selecting an external pass-transistor The FS3871 drives an external PNP transistor or P-channel MOSFET to control the charging current. The specifications must be concerned are the voltage and current rating and package power dissipation. The following examples illustrate the design process for either device: ...

Page 11

... VCS is the voltage drop across the current sense resistor, and VOL(CC) is the CC pin output low voltage specification for the FS3871. Select a MOSFET with gate threshold voltage, V(GSth),rating less than the calculated V(GS). FS3871 junction temperature below recommended value, TJMAX. − ...

Page 12

... Package Outline Inches Dimension Min. A --- A1 0.002 B 0.007 C 0.004 D 0.114 E 0.169 D1 0.026 H 0.246 Rev. 1.2 Millimeter Max. Min. Max. 0.043 --- 1.100 0.006 0.050 0.150 0.012 0.180 0.300 0.007 0.090 0.180 0.122 2.900 3.100 0.176 4.300 4.480 0.650 0.256 6.250 6.500 FS3871 12/14 ...

Page 13

... Inches Dimension Min. A 0.032 A1 0.002 B 0.011 C 0.005 D 0.114 E 0.185 D1 0.026 L 0.016 Z 0 Rev. 1.2 Millimeter Max. Min. Max. 0.043 0.81 1.10 0.006 0.05 0.15 0.015 0.25 0.38 0.009 0.13 0.23 0.122 2.90 3.10 0.201 4.70 5.10 0.65 0.026 0.4 0.66 ° ° FS3871 13/14 ...

Page 14

... Revise History Version Date Page 1.0 2006/07/01 - 1.1 2006/11/09 All 1.2 2007/03/ Rev. 1.2 Description New release Revise datasheet format Revise Ordering Information to FS3871D/FS3871E Revise Operating free-air temperature range from -20~70°C to -10~70°C Revise IIB max current to 2uA Add Revise History FS3871 14/14 ...

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