WL2817DA WILLSEMI | Alldatasheet
Document overview
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- PDF pages: 15
Technical content
Features
Input voltage : 2.5V~5.5V 2.7V 2.8V 2.9V 3V 3.3V Output current : 500mA/1A PSRR : 60dB(@ VOUT=3V) Dropout voltage : 70mV @ IOUT=0.5A Output noise : 50μVRMS Quiescent current : 160μA Typ.
Applications
LCD TV STB Computer, Graphic card Network communication equipments Others portable electronics devices Http://www.sh-willsemi.com DFN1612-8L PinConfiguration (TopView) B = Device code (3.0V) * = Month code (N: 2015.01, O:2015.02, and so on) Marking OrderInformation For detail information, Please refer to page 15.
WillSemiconductorLtd. 2 Apr.2019–Rev1.8 TypicalApplication Min. Typ. Max. CIN 4.7uF COUT 1uF BlockDiagram PinDescription PIN Symbol Description
1 VOUT Output
2 VOUT Output
3 LCON Output Current Limit Alternate
5 GND Ground
6 CE Enable, Active High
7 VIN Input
8 VIN Input
WillSemiconductorLtd. 3 Apr.2019–Rev1.8 AbsoluteMaximumRatings Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. *1:Power dissipation is calculate by PD = (VIN-VOUT) x IOUT RecommendOperatingRatings Parameter Symbol Value Unit Input voltage range VIN -0.3～6.5 V EN voltage range VEN -0.3～VIN V LCON voltage range VLCON -0.3～VIN V Output voltage range VOUT -0.3～VIN V Power dissipation *1 PD 625 mW Thermal resistance RθJA 165 oC/W Junction temperature TJ 150 oC Lead temperature(10s) TL 260 oC Storage temperature Tstg -55 ~ 150 oC ESD Ratings HBM 2000 V MM 200 V Parameter Symbol Value Unit Operating Supply voltage VIN 2.5～5.5 V Operating Temperature Range Topr -40～85 oC
WillSemiconductorLtd. 4 Apr.2019–Rev1.8 ElectronicsCharacteristics(Ta=25oC,VIN=VOUT+1V,CIN=4.7uF,COUT=1uF，IOUT=1mA， LCON=EN=VIN，unlessotherwisenoted) Parameter Symb ol Condition Min. Typ. Max. Unit Output Voltage VOUT T=25℃ Voset*0.98 Voset Voset*1.02 V -40℃≤T≤85℃ Voset*0.97 Voset Voset*1.03 Current Limit ILIM VIN=Vset+0.5V LCON=“H” 1 A LCON=“L” 0.5 A Dropout Voltage VDROP VOUT=VOUT*0.9 IOUT=0.5A 70 mV Load Regulation △VLoad VIN=Vset+0.5V LCON=“H”： 1mA≤IOUT≤1A 3.5 mV LCON=“L”： 1mA≤IOUT≤0.5A 1.5 mV UVLO Vuvlo 2 V Line Regulation △VLINE Vset+0.5V≤VIN≤5.5V（VIN≥UVLO） 5 10 mV Quiescent Current IQ IOUT=0 160 220 uA Shut-down Current ISHDN VEN = 0V 1 3 uA VOUT Temperature Coefficient ΔVOUT/ ΔT -40℃≤T≤85℃ 100 ppm/ Short Current Limit Isc VOUT=0V LCON=“H” 160 mA LCON=“L” 80 mA Inrush Current Limit Irush*1 CC mode LCON=“H” 500 mA LCON=“L” 250 mA Reverse Current Irev*2 VOUT=Voset+1V；EN=0； 0≤VIN≤Vrev_del 4.5 10 uA Detector offset voltage in reverse current protection mode Vrev_det*3 VOUT=Voset+1V；EN=0 0.5 V Release offset voltage in reverse current protection mode Vrev_rel*4 VOUT=Voset+1V；EN=0 0.35 V Max reverse Current Irevmax*5 VOUT=Voset+1V；EN=0 70 uA Discharge resistance Rdis EN=0 60 Ω Power Supply Ripple Rejection PSRR VIN=(VOUT+1V)DC+0.2VP-P F=1KHz ,IOUT=10mA 60 dB Output noise voltage （VOUT=3V） eNO BW=10Hz to 100KHz IOUT=0 40 μVRMS BW=10Hz to 100KHz IOUT=10mA 60 Output noise voltage （VOUT=1.0V） eNO BW=10Hz to 100KHz IOUT=0 20 μVRMS BW=10Hz to 100KHz IOUT=10mA 35 EN logic high voltage VENH VIN=5.5V, IOUT=1mA 1.2 V
WillSemiconductorLtd. 5 Apr.2019–Rev1.8 *1: For CC (Constant Current) mode, please refer to Start-up Characteristics. *2 *3 *4 *5: Please refer to reverse current protection mode Start-upCharacteristics Constant slope circuit is included in the WL2817DA to prevent the overshoot of the output voltage. If inrush current increases due to the large capacitance of COUT, the operation mode will be shift from Constant Slope (CS) mode to Constant Current (CC) mode. The CC mode maintains a constant inrush current. In the CC mode, ton varies with the size of COUT and the load current. ReverseCurrentProtectionCircuit The WL2817DA include a Reverse Current Protection Circuit, which stop the reverse current from VOUT pin to VIN pin or GND pin when VOUT becomes higher than VIN. Following figure shows the load characteristics of each mode. When giving the VOUT pin a constant voltage and decreasing the VIN voltage,the VIN voltage will become lower than VOUT-Vrev_det, the reverse current protection starts to function to stop the load current. By increasing the VIN voltage higher than VOUT-Vrev_rel, the protection mode will be released to let the load current to flow. When VIN voltage is between VOUT and Vrev_det, the parasitic diode between VIN pin and VOUT pin becomes forward direction. As a result, the current flows from VOUT pin to VIN pin, and the maximum of the current is Irevmax. Figure1.Detection/ReleaseThresholdvalueofReverseCurrentProtection EN logic low voltage VENL VIN=5.5V, IOUT=0mA 0.4 V EN pull-down current Ien 0.2 1 uA LCON pull-down current ILCON 0.2 1 uA EN logic high voltage VENH 1.2 V EN logic low voltage VENL 0.4 V LCON logic high voltage VENH 1.2 V LCON logic low voltage VENL 0.4 V Thermal shutdown threshold TSD 165 oC Thermal shutdown hysteresis △ TSD 30 oC
WillSemiconductorLtd. 6 Apr.2019–Rev1.8 Typicalcharacteristics(Ta=25oC,VIN=4V,VOUT=3V，CIN=4.7uF，COUT=1uF,unless otherwisenoted) Quiescentcurrentvs.Inputvoltage -40 -20 0 20 40 60 80 100 120 140 Dropout Voltage (mV) Temperature( o IO=500mA DropoutVoltagevs.Temperature -40 -20 0 20 40 60 80 100 120 140 100 120 140 160 180 200 Quiescent Current(uA) Temperature( o IO=1mA Quiescentcurrent vs.Temperature -40 -20 0 20 40 60 80 100 120 140 2.96 2.97 2.98 2.99 3.00 3.01 3.02 3.03 3.04 Output Voltage (V) Temperature( o IO=1mA OutputVoltagevs.Temperature Outputvoltagevs.Inputvoltage -40 -20 0 20 40 60 80 100 120 140 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Current Limit(A) Temperature( o LCON=1 LCON=0 CurrentLimit vs.Temperature
WillSemiconductorLtd. 7 Apr.2019–Rev1.8 ShortCurrentLimitvs.Temperature OutputVoltagevs.LoadCurrent Inrush CurrentLimitvs.Temperature OutputVoltagevs.LoadCurrent
WillSemiconductorLtd. 8 Apr.2019–Rev1.8 1.Startup A：DifferentLoad LCON=0 LCON=1 VIN=4V,IOUT=0mA VIN=4V,IOUT=0mA VIN=4V,IOUT=100mA VIN=4V,IOUT=100mA VIN=4V,IOUT=300mA VIN=4V,IOUT=600mA
WillSemiconductorLtd. 9 Apr.2019–Rev1.8 B：DifferentCout LCON=0 LCON=1 VIN=4V，COUT=1uF VIN=4V，COUT=1uF VIN=4V，COUT=4.7uF VIN=4V，COUT=4.7uF VIN=4V，COUT=10uF VIN=4V，COUT=10uF
WillSemiconductorLtd. 10 Apr.2019–Rev1.8 VIN=4V，COUT=22uF VIN=4V，COUT=22uF VIN=4V，COUT=47uF VIN=4V，COUT=47uF VIN=4V，COUT=100uF VIN=4V，COUT=100uF 2.Shutdown VIN=4V，IOUT=0mA VIN=4V，IOUT=30mA
WillSemiconductorLtd. 11 Apr.2019–Rev1.8 VIN=4V，IOUT=150mA 3.LoadStep VIN=4V,IOUT=50mA-100mA VIN=4V,IOUT=1mA-250mA VIN=4V,IOUT=1mA-500mA VIN=4V,IOUT=1mA-1A
WillSemiconductorLtd. 12 Apr.2019–Rev1.8 4.LCONLineStep VIN=4V，IOUT=0mA VIN=4V，IOUT=150mA VIN=4V，IOUT=500mA
WillSemiconductorLtd. 13 Apr.2019–Rev1.8 PACKAGEOUTLINEDIMENSIONS DFN1612-8L SIDE VIEW BOTTOM VIEWTOP VIEW PIN 1 D E e L b A RecommendPCB Layout(Unit:mm) Symbol DimensionsinMillimeters Min. Typ. Max. A 0.50 0.55 0.60 A1 - - 0.05 A3 0.15 Ref. D 1.55 1.60 1.65 E 1.15 1.20 1.25 D2 1.25 1.30 1.35 E2 0.25 0.30 0.35 b 0.13 0.18 0.23 e 0.40 BSC L 0.15 0.20 0.25 Notes: This recommended land pattern is for reference purposes only. Please consult your manufacturing group to ensure your PCB design guidelines are met.
WillSemiconductorLtd. 14 Apr.2019–Rev1.8 TAPEANDREELINFORMATION ReelDimensions TapeDimensions W QuadrantAssignmentsForPIN1OrientationInTape Q1 Q2 Q4Q3 Q1 Q2 Q4Q3 RD Reel Dimension W Overall width of the carrier tape 1 P1 Pitch between successive cavity centers Pin1 Pin1 Quadrant Reel Dimensions RD User Direction of Feed 7inch 13inch 2mm 4mm 8mm 8mm 12mm 16mm
WillSemiconductorLtd. 15 Apr.2019–Rev1.8 ORDERINFORMATION Ordering No. VOUT(V) Package Marking Operating Temperature Shipping WL2817DA10-8/TR 1.0 DFN1612-8L C* -40~+85°C 3000/Tapeand Reel WL2817DA11-8/TR 1.1 DFN1612-8L J* -40~+85°C 3000/Tapeand Reel WL2817DA12-8/TR 1.2 DFN1612-8L K* -40~+85°C 3000/Tapeand Reel WL2817DA15-8/TR 1.5 DFN1612-8L L* -40~+85°C 3000/Tapeand Reel WL2817DA18-8/TR 1.8 DFN1612-8L D* -40~+85°C 3000/Tapeand Reel WL2817DA27-8/TR 2.7 DFN1612-8L M* -40~+85°C 3000/Tapeand Reel WL2817DA28-8/TR 2.8 DFN1612-8L E* -40~+85°C 3000/Tapeand Reel WL2817DA29-8/TR 2.9 DFN1612-8L N* -40~+85°C 3000/Tapeand Reel WL2817DA30-8/TR 3.0 DFN1612-8L B* -40~+85°C 3000/Tapeand Reel WL2817DA33-8/TR 3.3 DFN1612-8L I* -40~+85°C 3000/Tapeand Reel