AP3771 DIODES | Alldatasheet
Document overview
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- PDF pages: 11
Technical content
Features
Primary Side Control for Tight Constant Current and Constant Voltage 30mW No-load Input Power Excellent Dynamic Performance with AP4340 (For 5V Application) MOSFET Driving Proprietary Adjustable Line Compensation for CC Variation Constant and Built-in 7% and 3% Voltage Drop Compensation Enhanced Audio Noise Suppression Open Circuit Protection Over Voltage Protection Short Circuit Protection SOT26 Package Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) GATE GND VCC CS CPC FB 3 4 Pin 1 Mark SOT26
Applications
Adapters/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Devices LED Driver Standby and Auxiliary Power Supplies Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Hal ogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
Document number: DS37281 Rev. 1 - 2 2 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Typical Applications Circuit C1 + VO+ VO- Rs D1C2 VCC GATE FB CS GND Ns Na Np R5 C3 CPC RLINE OUT GND VCC AP4340 R10 D4 to D7 R11 R12 R13 R14 AP3771 5V/1.8A Output for Battery Charger of Tablet PC (The AP4340 Is Used to Achieve Fast Dynamic Response) C1 + VO+ VO- Rs D1C2 VCC GATE FB CS GND AP3771 Ns Na Np R5 C3 CPC RLINE R10 D4 to D7 R11 R12 R13 R14 C6R8 12V/1.5A Output for Adapter
Document number: DS37281 Rev. 1 - 2 3 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Pin Descriptions Pin Number Pin Name Function
1 GATE
The GATE pin is used to turn on and turn off the power switch. When turning on the power switch, the GATE pin will keep the gate voltage of the power MOSFET to 10V. When turning off the power switch, the resistance between the GATE and GND will become 40Ω
2 GND
The GND pin is the ground of the IC. When the power MOSFET is turned off, a fast reverse sinking current to the GATE of MOSFET will flow out from this pin. Attention should be paid to in the PCB layout 3 VCC The VCC pin supplies the power for the IC. In order to get the correct operation of the IC, a capacitor with low ESR should be placed as close as possible to the VCC pin 4 CS The CS is the current sense pin of the IC. The IC will turn off the power MOSFET according to the voltage on the CS p in. When the power MOSFET is on, a current is output from the CS pin which is proportional to the line voltage to realize the function of line compensation
5 CPC
A capacitor more than 50nF should be connected to this pin. The voltage of CPC pin is linear to load of the system and it is used for the functions of cable voltage drop compensation and audio noise suppression
6 FB The CV and CC regulation are realized based on the voltage sampling of this pin
CV_ctrl PFM Driver R Q S R Q S CC_ctrl FB CS CPC VCC GATE GND Cable Compensation Constant Voltage Control Constant Current Control Tonsec Detector 0.1V VFB VREF1 COMP EA Peak Current Control & LEB TONS Dynamic Response Pro Dyn CC_ctrl Audio noise Suppression VREF2 Shutdown Line Compensation Dmin R Q S SCP VCC OVP R Q S UVLO EN_Dri
Document number: DS37281 Rev. 1 - 2 4 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Absolute Maximum Ratings (Note 4) Symbol Parameter Rating Unit VCC Supply Voltage -0.3 to 30 V – CS, CPC to GND -0.3 to 7 V VFB FB Input Voltage -40 to 10 V – Output Voltage at GATE -0.3 to 15 V TJ Operating Junction Temperature +150 ºC TSTG Storage Temperature -65 to +150 ºC TLEAD Lead Temperature (Soldering, 10 sec) +300 ºC θJA Thermal Resistance (Junction to Ambient) 200 º C/W Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Condi tions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Electrical Characteristics (VCC =15V, TA=+25° C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit UVLO SECTION VTH (ST) Startup Voltage Threshold – 13 15.5 18 V VOPR(MIN) Minimal Operating Voltage – 5.5 6.5 7.5 V STANDBY CURRENT SECTION IST Startup Current VCC=VTH (ST)-1V, Before startup 0 0.2 0.6 μA ICC(OPR) Operating Current Static current 300 400 500 DRIVE OUTPUT SECTION VGATE Gate Voltage – 8 10 12 V ISOURCE Source Current VGATE =0V 30 75 120 mA RDS(ON) Sink Resistance – 30 40 50 Ω LINE COMPENSATION SECTION gm Line Compensation Transconductance (Note 5) – 1.1 1.5 1.9 μS CURRENT SENSE SECTION VCS Current Sense Threshold Voltage at Heavy Load (CV Mode) and CC Mode – 480 510 540 mV tLEB Leading Edge Blanking – 300 475 800 ns FEEDBACK INPUT SECTION VFB Feedback Threshold – 3.94 4 4.06 V IFB FB Input Leakage Current VFB=4V 2 3 4 μA CABLE COMPENSATION SECTION ΔVFB-CABLE/VFB% Cable Compensation Voltage AP3771A 6 7 8 % AP3771B 2 3 4 %
Document number: DS37281 Rev. 1 - 2 5 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Electrical Characteristics (Cont.) (VCC =15V, TA=+25° C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit DYNAMIC FUNCTION SECTION tD Blanking Time for Dynamic Function – 110 140 170 μs VTRIGGER Trigger Voltage for Dynamic Function – 115 150 185 mV PROTECTION SECTION VCC(OVP) OVP of VCC – 25 27.5 30 V VFB(OVP) OVP of VFB – 5.5 6.5 7.5 V VFB(SCP) Short Circuit Protection – 1.0 1.2 1.4 V tONP(MAX) Maximum tONP – 24 35 46 μs tOFF(MAX) Maximum Off Time – 14 18 25 ms Note 5: Line compensation voltage on CS pin: Performance Characteristics ICC(OPR) vs. VCC IFB vs. VCC VGATE vs. VCC tONP(MAX) vs. VCC 5 10 15 20 25 30 100 200 300 400 500 600 700 800 ICC(OPR) (A) VCC (V) 5 10 15 20 25 30 IFB (A) VCC (V) 5 10 15 20 25 30 VGATE (V) VCC (V) 5 10 15 20 25 30 tONP(MAX) (s) VCC (V) LINEm PRI AUX DCINCS RgRR R N
Document number: DS37281 Rev. 1 - 2 6 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT 5 10 15 20 25 30 tOFF(MAX) (ms) VCC (V) 5 10 15 20 25 30500 600 700 800 900 tLEB(ns) VCC (V) Performance Characteristics (Cont.) tOFF(MAX) vs. VCC tLEB vs. VCC tLEB vs. TA tONP(MAX) vs. TA VTH(ST) vs. TA VOPR(MIN) vs. TA -40 -20 0 20 40 60 80 100 120 140 400 450 500 550 600 650 700 750 800 850 900 950 1000 tLEB (ns) TA ( o -40 -20 0 20 40 60 80 100 120 140 tONP(MAX) (s) TA ( o -40 -20 0 20 40 60 80 100 120 140 TA ( o VTH(ST) (V) -40 -20 0 20 40 60 80 100 120 140 VOPR(MIN) (V) TA ( o
Document number: DS37281 Rev. 1 - 2 7 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Performance Characteristics (Cont.) ICC(OPR) vs. TA IST vs. TA tOFF(MAX) vs. TA VGATE vs. TA RDS(ON) vs. TA VFB vs. TA -40 -20 0 20 40 60 80 100 120 140 250 275 300 325 350 ICC(OPR) (A) TA ( o -40 -20 0 20 40 60 80 100 120 140 0.0 0.5 1.0 1.5 2.0 IST (A) TA ( o -40 -20 0 20 40 60 80 100 120 140 tOFF(MAX) (ms) TA ( o -40 -20 0 20 40 60 80 100 120 140 VGATE (V) TA ( o -40 -20 0 20 40 60 80 100 120 140 100 RDS(ON) () TA ( o -40 -20 0 20 40 60 80 100 120 140 3.0 3.5 4.0 4.5 5.0 VFB (V) TA ( o
Document number: DS37281 Rev. 1 - 2 8 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT
Ordering Information
TR: Tape & ReelK6: SOT26 G1: Green RoHS/Green A: 7% B: 3% Product Name Cable Compensation Voltage Version B: Special Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green . Package Temperature Range Cable Compensation Voltage Part Number Marking ID Packing SOT26 -40 to +85C 7% AP3771AK6TR-BG1 GJI 3000/Tape & Reel 3% AP3771BK6TR-BG1 GJJ 3000/Tape & Reel Marking Information (Top View) : Logo XXX: Marking ID XXX
Document number: DS37281 Rev. 1 - 2 9 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SOT26 2.820(0.111) 3.100(0.122) 2.650(0.104) 3.000(0.118) 1.500(0.059) 1.700(0.067) 0.950(0.037)TYP 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.500(0.020) 0.700(0.028)REF 0.100(0.004) 0.200(0.008) 0.200(0.008) 0.300(0.012) 0.600(0.024) 0.000(0.000) 0.150(0.006) 0.900(0.035) 1.300(0.051) 1.450(0.057) MAX 1 2 3 456 Pin 1 Mark
Document number: DS37281 Rev. 1 - 2 10 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT Suggested Pad Layout (1) Package Type: SOT26 E E G Z Y X Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch)
Document number: DS37281 Rev. 1 - 2 11 of 11 www.diodes.com May 2014 © Diodes Incorporated AP3771 A Product Line of Diodes Incorporated NEW PRODUCT IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license unde r its patent or trademark rights, nor the rights of others. Any Customer or user of th is document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diod es Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product nam es and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in th e safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporate d products in such safety -critical, life support devices or systems, notwithstanding any devices - or systems -related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorpora ted and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2014, Diodes Incorporated www.diodes.com