APS39903

APS39903

Document overview

• Manufacturer or author: Diodes Incorporated
• PDF pages: 17

Technical content

Features

 Compatible to MediaTek Pump ExpressTM Protocol  Ultra-Low Standby Power Consumption  Built-in NPN Transistor with 700VCBO  Valley-turn On to Reduce Switching Loss and Benefit for EMI  Piece-wise Frequency Reduction to Enhance Conversion Efficiency and Suppress Audio Noise  ±5% Constant Voltage Accuracy for 5V Output  Audio Noise Suppression  Open Circuit Protection (OCkP)  Current Sense Resistor Short Protection  Over Voltage Protection (OVP)  Over Temperature Protection (OTP)  Short Circuit Protection (SCP) with Hiccup  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) 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: DS37226 Rev. 2 - 2 2 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Typical Applications Circuit FR1 L1 TR1 FB R13C VCC R14 APS39903 CPC GND 5V/1A D4~D7 R12C7 D2 + D3C5 R11 CS R10 5, 6 Pin Descriptions Pin Number Pin Name Function

1 CPC

A capacitor is connected to this pin to form a low pass filter for cable voltage drop compensation, audio noise suppression and detecting the patterns of load current to change the output voltage and current

2 FB The CV and CC regulation are realized base on the voltage sampling of this pin

3 VCC VCC supply pin for the switcher. A capacitor with low ESR should be placed as close as possible to this pin 4 CS Current senses pin of IC. The CS pin will turn off the power transistor when the CS pin voltage reaches turn off threshold. 5, 6 C This pin is connected with an internal power BJT’s collector

7 GND The ground of the switcher

Document number: DS37226 Rev. 2 - 2 3 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Functional Block Diagram Regulator Bias OVP OCkP OTP UVLO Vally- on and Driver FB CS VCC C GND Constant Voltage Control Cable Compensation 5, 6 Constant Current Control Frequency Jitter Pro Line Compensation tONStONS Detection VLOAD RCS short SCP tONS Load Detection CPC VLOAD Output Voltage Selection 5V~3.6V_select 5V~3.6V_select 5V~3.6V_select tONS CS Absolute Maximum Ratings (Note 4) Symbol Parameter Rating Unit VCC Supply Voltage -0.3 to 35 V VCS, VCPC Voltage on CS, CPC Pin -0.3 to 7 V VFB FB Input Voltage -0.3 to 8 V VCBO Collector-emitter Voltage 700 V – Collector DC Current 1.5 A PD Total Power Dissipation 0.7 W TJ Operating Junction Temperature -40 to +150 °C TSTG Storage Temperature -65 to +150 °C TLEAD Lead Temperature (Soldering, 10 sec) +300 °C θJA Thermal Resistance (Junction to Ambient) 100 °C/W ESD ESD (Human Body Model) 4000 V ESD (Machine Model) 300 V Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stres s ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommende d Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.

Document number: DS37226 Rev. 2 - 2 4 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Electrical Characteristics (@VCC = 12V, TA = +25° C, unless otherwise specified.) Symbol Parameters Conditions Min Typ Max Unit STARTUP AND UVLO SECTION VTH_ST Startup Threshold – 13 15.5 18 V VOPR(MIN) Minimal Operating Voltage – 5.2 5.8 6.4 V STANDBY CURRENT SECTION IST Startup Current VCC = VTH_ST-1V before startup 0 0.2 0.6 μA ICC_QST Quiescent Current Static current 435 500 565 DRIVING OUTPUT SECTION IOUT(MAX) The Maximum Source Current – 25 32 39 mA POWER TRANSISTOR SECTION VCE(SAT) Collector-emitter Saturation Voltage IC=0.5A – – 0.3 V hFE DC Current Gain – 14 17 – – ICEO Leakage Current – – – 60 nA OPERATING FREQUENCY SECTION (5% Load to Full Load) tOFF(MAX) Maximum Off Time – 691 768 845 μs tSAMPLE Sampling Time 37% to 100% full load 5.4 6 6.6 μs 4% to 37% full load 3.2 3.6 4.0 μs 0% to 4% full load (Note 5) 2.25 2.5 2.75 μs FREQUENCY JITTER △VCS/VCS VCS Modulation 7% to 100% full load 2 3 4 % tMOD VCS Modulation Period – 230 256 282 μs CURRENT SENSE SECTION VCS_H (Vo≥4.4V) Current Sense Threshold 37% to 100% full load 830 900 970 mV VCS_H (Vo<4.4V) 940 1020 1100 VCS_M 4% to 37% full load 550 600 650 VCS_L 0% to 4% full load (Note 5) 320 350 380 RLINE Built-in Line Compensation Resistor – 260 330 400 Ω tLEB Leading Edge Blanking VCS_H and VCS_M 425 500 575 ns VCS_L (Note 5) 170 200 230 CONSTANT VOLTAGE SECTION VFB@5V Feedback Threshold Voltage – 3.94 4.0 4.06 V

Document number: DS37226 Rev. 2 - 2 5 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Electrical Characteristics (@VCC = 12V, TA = +25° C, unless otherwise specified.) (Cont.) Symbol Parameters Conditions Min Typ Max Unit VFB@4.8V Feedback Threshold Voltage – 3.75 3.85 3.95 V VFB@4.6V 3.61 3.7 3.79 VFB@4.4V 3.47 3.56 3.65 VFB@4.2V 3.32 3.41 3.5 VFB@4V 3.18 3.26 3.34 VFB@3.8V 3.03 3.11 3.19 VFB@3.6V 2.89 2.96 3.03 RFB FB Pin Input Resistance VFB=4V 560 700 840 kΩ VCABLE/VOUT% Cable Compensation Ratio@5V – 5 6 7 % CONSTANT CURRENT SECTION tONS/tSW@5V &4.2V Maximum Secondary Duty Cycle VFB=2V (Note 5) 0.47 0.5 0.53 tONS/tSW@ 4.8V&4V 0.49 0.52 0.55 tONS/tSW@ tONS/tSW@ DYNAMIC SECTION VUV_H Under Voltage of Feedback Pin for VCS_H (Note 5) 3.61 3.68 3.75 V OUTPUT VOLTAGE SELECTION SECTION VCPC_L Current Control Threshold VCPC control_L – 88 – mV VCPC_H VCPC control_H – 150 – tON_A Current Control Pattern Time (Note 5) 400 500 600 ms tON_B 220 300 380 tON_C 50 100 150 tOFF_D 50 100 150 tWDT Watch Dog Time – 180 210 240 ms PROTECTION FUNCTION SECTION VFB(OVP) Over Voltage Protection – 7.1 7.5 7.9 V VCC(OVP) Over Voltage Protection at VCC Pin – 27 30 33 V VFB(SCP) Short Circuit Protection VFB @ Hiccup 1.61 1.7 1.79 V tSCP Maximum Time under VFB(SCP) – 116 128 140 ms TOTP Shutdown Temperature – +128 +140 +152 °C THYS Temperature Hysteresis – +36 +40 +44 °C Note 5: Guaranteed by design.

Figure 2. The Operation Waveform of Flyback PSR System Where, the fSW is the switching frequency. When the peak current IPK is constant, the output power depends on the switching frequency fSW. Where the Vd is the diode forward voltage drop.

Figure 3. Auxiliary Voltage Waveform current. The CV loop control function of APS39903 then generates a D1 off-time to regulate the output voltage. The APS39903 can work in constant-current (CC) mode. Figure 2 shows the secondary current waveforms. Therefore, APS39903 can realize CC mode operation by constant primary peak current and fixed diode conduction duty cycle. since switching frequency decreases to audio frequency range, about less than 20kHz. medium load and VCS_L for light load. At constant current mode, the peak current is still VCS_H.

Figure 4. Multiple Segment Peak Current at CV Mode It can be seen from Figure 4, with multiple segment peak current control, APS39903 power system can get the good audible noise performance. blanking is built in. During this blanking time, the current sense comparator is disabled and the external power switch cannot be turned off. Furthermore, because of multiple segment peak current design, the required maximum on time tONP changes with different load condition. Therefore the LEB time parameter also changes with different load condition. increased by decreasing the resistance of the upper FB resistor. Cable compensation is fixed in APS39903. then result in the better radiative EMI performance. sequence, the active frequency jitter can be realized with 256µs repetitive cycles.

Document number: DS37226 Rev. 2 - 2 14 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Performance Characteristics (Cont.) -40 -20 0 20 40 60 80 100 120 140 100 150 200 250 300 350 Ambient Temperature ( o Line Compensation Resistance () Figure 18. Line Compensation Resistance vs. Ambient Temperature Figure 19. Input Resistance of FB Pin vs. Ambient Temperature

Ordering Information

TR : Tape & ReelM : SO-7 G1 : Green Product Name RoHS/Green Package Temperature Range Cable Compensation Voltage Part Number Marking ID Packing SO-7 -40 to +150C 6% APS39903MTR-G1 39903M-G1 4000/Tape & Reel Marking Information (Top View) : Logo XXXXXM-G1: Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch No. -40 -20 0 20 40 60 80 100 120 140 200 300 400 500 600 700 800 900 1000 Ambient Temperature ( o Input Resistance of FB Pin (k)

Document number: DS37226 Rev. 2 - 2 15 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SO-7 3.800(0.150) 4.000(0.157) 1.270(0.050) TYP 4.700(0.185) 5.100(0.201) 0.330(0.013) 0.510(0.020) 0.150(0.006) 0.250(0.010) 0.080(0.003) 0.250(0.010) 1.350(0.053) 1.750(0.069) 0.450(0.017) 0.800(0.031)8° 5.800(0.228) 6.200(0.244) 2.54(0.100) TYP 1.250(0.049) 1.500(0.059) Note: Eject hole, oriented hole and mold mark is optional. Option 2 45° 0.350(0.014) TYP Option 1

Document number: DS37226 Rev. 2 - 2 16 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated NEW PRODUCT Suggested Pad Layout (1) Package Type: SO-7 ZG E X Y Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch) (mm)/(inch)

Document number: DS37226 Rev. 2 - 2 17 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 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 c hanges 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 this 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 do cument 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 the 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 Incorporated 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, Cus tomers must fully indemnify Diodes Incorporated 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