Fujitsu MB3842 Manual de usuario

DS04-27604-2EFUJITSU SEMICONDUCTORDATA SHEETASSP For Power Supply ApplicationsPower Management 2-ch Switch ICMB3842/MB3845 DESCRIPTIONThe MB3842/384

10MB3842/MB3845(Continued)(Continued)1501401301201101009080706050−60 −40 −20 0 20 40 60 80 100 120at 0.1 Aat 0.6 Aat 1 A−40 °C25 °C100 °C1501401301201

11MB3842/MB3845(Continued)(Continued)5 V5 V100 kΩ2 ΩVINISWVSWRLIMGNDEN, EN OCOUTSSCSVIL/VIHA160014001200100080060040020000234561ISW (mA)6.2 k (0.1 A)2

12MB3842/MB3845(Continued)• Power derating characteristicsPower dissipation PD (W)10.90.80.70.60.50.40.30.20.10−20 0 20 40 60 80 1001 V / 500 NS 50 kΩ

13MB3842/MB3845 FUNCTIONAL DESCRIPTIONCurrent Limit SettingBy placing resistance between the CS and GND pins, the current limit can be set between 100

14MB3842/MB3845 TYPICAL APPLICATION CSSRLIMRLIMCSSEN1EN1SS1CS1VIN1VIN1VIN2VIN2CS2SS2EN2EN2GNDOC1OUT1OUT1OUT1OUT2OUT2OUT2OC2GNDMB3842/MB3845Top ViewCon

15MB3842/MB3845 APPLICATION EXAMPLE(1) Dual-Port Self-Powered Hub Application (NON-GANG Mode Connection)5 VUSB 5 V ControllerOvercurrentON/OFFPower Su

16MB3842/MB3845(2) Dual-Port Bus Powered Hub Application (GANG Mode Connection) USBOvercurrentON/OFF5 VUpstream PortMB3842/MB3845USB Port1(×4)USB Port

17MB3842/MB3845 USAGE PRECAUTION1. Never use settings exceeding maximum rated conditions.Exceeding maximum rated conditions may cause permanent damage

18MB3842/MB3845 PACKAGE DIMENSIONC1994 FUJITSU LIMITED F20012S-2C-40.50±0.20(.020±.008)0.10±0.10(.004±.004)(STAND OFF)0 10°Details of "A&qu

MB3842/MB3845FUJITSU LIMITEDAll Rights Reserved.The contents of this document are subject to change without notice. Customers are advised to consult w

2MB3842/MB3845 PIN ASSIGNMENT20191817161514131211GNDOC1OUT1OUT1OUT1OUT2OUT2OUT2OC2GND12345678910EN1, EN1SS1CS1VIN1VIN1VIN2VIN2CS2SS2EN2, EN2SSOP-20P(F

3MB3842/MB3845 PIN DESCRIPTIONPin no. Symbol Descriptions1/10EN(MB3842)Control signal input pin.Set “H” to turn switch on, “L” to turn toff. At 0.8 V

4MB3842/MB3845 BLOCK DIAGRAM (for 1 channel)SS1EN1VIN1OSC1BGR1+−COMPFF1QSROC1OUT1CS1+−COMPMB3842SS1EN1VIN1OSC1BGR1+−COMPFF1QSROC1OUT1CS1+−COMPMB3845Te

5MB3842/MB3845 ABSOLUTE MAXIMUM RATINGSWARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperatu

6MB3842/MB3845 ELECTRICAL CHARACTERISTICS (per 1 ch) • MB3842/MB3845 (VIN = 5 V, Ta = +25°C)• MB3842 (VIN = 5 V, Ta = +25°C)• MB3845 (VIN = 5 V, Ta

7MB3842/MB3845 DIAGRAM (Continued)VINENENVOUTIOUTOCSW OFFOvercurrent does not occurSW ON SW ON5 VHiLow5 V5 V• Normal operationSW ONSW ONSW ON2.3 V2.1

8MB3842/MB3845(Continued)SW ONOFF ON OFFVINENENVOUTIOUTOC5 VHiLow5 V5 V = 0 V• At overcurrent detectionSW ONOver-temperature correctedOver-temperature

9MB3842/MB3845 TYPICAL CHARACTERISTICS(Continued)VIN = 5.0 V VIN = 3.3 V VIN = 2.5 V 1010.10.01100 1000 10000 100000RLIM (Ω)ISW(A)•RLIM vs. limit curr