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LP3774 Dataheets PDF



Part Number LP3774
Manufacturers LANDP
Logo LANDP
Description Low Power Off-CC / CV PSR controller
Datasheet LP3774 DatasheetLP3774 Datasheet (PDF)

LP3773/4/5 LP3773/4/5 【/PSR】 WUXI CHIP HOPE MICRO-ELECTRONICS LTD. -1- http://www.chip-hope.com V1.4 LP3773/4/5 TABLE OF CONTENTS …………………………………………………………………………………………- 3 ……………..……………………………………….…………………………………- 3 ……………..…………………………………….………………………………- 3 …..…………………………………………………………….………………………- 3 ……………..………………………………………..…………...…………- 4 ……………..…………………………………….………………………………- 4 ……………..…………………………………………….………………………- 4 ……………..………………………..…………………………………...…- 5 ……………..……………………………………….……………………- 5 ……………………………….

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LP3773/4/5 LP3773/4/5 【/PSR】 WUXI CHIP HOPE MICRO-ELECTRONICS LTD. -1- http://www.chip-hope.com V1.4 LP3773/4/5 TABLE OF CONTENTS …………………………………………………………………………………………- 3 ……………..……………………………………….…………………………………- 3 ……………..…………………………………….………………………………- 3 …..…………………………………………………………….………………………- 3 ……………..………………………………………..…………...…………- 4 ……………..…………………………………….………………………………- 4 ……………..…………………………………………….………………………- 4 ……………..………………………..…………………………………...…- 5 ……………..……………………………………….……………………- 5 …………………………………………………………………...…………- 6 LP3773/4/5 ……..……………………………………...…………- 7 …………...…………………………………………………………………- 7 ……………..……………………………………………………….……………- 9 ……………..………………………………………………………....….………- 9 - -2- http://www.chip-hope.com V1.4 LP3773/4/5 LP3773/4/5/,VCBO 750V。(PFM)(DCM) 。 LP3773/4/5,(CV / CC) 。,。LP3773/4/5 ,30mW。 LP3773/4/5,, FB,12%, 。 ■ 、 ■ 30mW ■ ■ ■ , ■ ■ ■ ■ ■ ■ LP3773 LP3773/4/5 SOP-7 LP3772-1+ 1300X LP3773/4/5 ■ 、、PDA、MP3 、 。 ■ LED ■ RCC ■ -3- http://www.chip-hope.com V1.4 LP3773/4/5 1 : LP3773/4/5 2: LP3773/4/5 Pin Assignments(SOP-7) Pin 1 2 3 4 5、6 7 Pin Name FB CS VCC E C GND Description CV CC CS IC 。 CS , 。 VCC 。 IC , ESR VCC E C GND IC 。, BJT 。 PCB 1 -4- http://www.chip-hope.com V1.4 LP3773/4/5 3: LP3773/4/5 Block Diagram ( 1) Parameter Supply Voltage CS to GND FB Input Voltage Source Current at OUT Pin Operating Junction Storage Temperature Lead Temperature (Soldering, Thermal Resistance ESD (Human Body Model) Symbol VCC Vcs VFB ISOURCE TJ TST TLEAD JA 2 Value -0.3 to 30 -0.3 to 7 -40 to 8.5 Internally Limited 150 -65 to 150 300 250 2000 Unit V V V A ºC ºC ºC ºC/W V 1:,。, ,。 。, ,。 -5- http://www.chip-hope.com V1.4 LP3773/4/5 (LP3773/4/5) VCC =15V, TA=25°C, unless otherwise specified. Parameter Symbol Conditions UVLO SECTION Startup Threshold Minimal Operating Voltage VST VUVLO STANDBY CURRENT SECTION Startup Current VCC=VTH (ST)-1V, IST Before Startup Operating Current ICC Static current DRIVE OUTPUT SECTION Output Current Sink Source Isink ISOURCE Apply 1V @OUT pin Maximum Off TOFFMAX CURRENT SENSE SECTION Current Sense Threshold Voltage at CC Mode VCS1 Current Sense Threshold Voltage at light load VCS2 Leading Edge Blanking TLEB FEEDBACK INPUT SECTION The minimum POWER SWITCH i Input Resistance of FB Pin RFB VFB=4V Feedback VFB LINE COMPENSATION SECTION Line Compensation VCOMP_LINE Voltage Vfb=-10V,RLINE=30K Ω (Figure.4) CABLE COMPENSATION SECTION Sink Current of FB Pin Ifb 100% output current Min 13 3.5 0 150 24 1 3.94 Typ 15.5 4 0.2 500 200 30 18 500 330 500 1.6 4 120 100 Max 18 4.5 0.6 330 40 2 4.06 Unit V V µA mA mA ms mV mV ns MΩ V mV µA PROTECTION SECTION Over Voltage Max. On Time of Primary Side VFBOVP TonpMAX 3 6 6.5 7 25 V uS -6- http://www.chip-hope.com V1.4 LP3773/4/5 LP3773/4/5 PARAMETER TEST SYMBOL CONDITIONS Collect-Base Cutoff Current Collect-Emitter Cutoff Current Emitter- Base Cutoff Current Collector- Base Voltage Collector-Emitter Voltage I CBO I CEO I EBO V CBO V CEO VCE = 700V IE = 0 VCE = 400V IB = 0 VEB = 9V IC = 0 IC = 0.1mA IC = 1mA Emitter-Base Voltage VEBO IE = 0.1mA VALUES MIN TYP MAX - - 20 - - 40 - - 10 750 450 9 DC Current Gain hFE VCE = 5V, IC = 0.2A 15 - 30 Collector-Emitter Saturation Voltage Base-Emitter Saturation Voltage Current Gain-Bandwidth Product VCESAT IC =1A, IB = 0.25A - - 0.9 VBESAT IC =1A, IB = 0.25A - - 1.2 VCE = 10V ; IC = Fr 0.1A 5.0 - f = 1MHz - Fall Time tr UI9600, Ic=0.25A 1 : 1.47*1.47mm UNIT μA μA μA V V V V V MHz uS -7- http://www.chip-hope.com V1.4 LP3773/4/5 LP3773 LP3774 LP3775 Vin:90-264Vac 50/60Hz 6.0W(5V/1200mA) 4.5W(5V/900mA) 2.5W(5V/500mA) -8- Vin:230Vac 50Hz 7.5W(5V/1500mA) 6.0W(5V/1200mA) 3.5W(5V/700mA) http://www.chip-hope.com V1.4 LP3773/4/5 SOP-7 SOP-7 LP377X XXXXXXXX : Logo; LP377X:, X=3 1.47*1.47mm ; X=4 1.18*1.18mm ; X=5 0.83*0.83mm ; XXXXXXXX: Wafer ID。 -9- http://www.chip-hope.com V1.4 .


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