AP3203MPTR-G1

PART OBSOLETE NO ALTERNATE PART AP3203 380KHZ 3A ASYNCHRONOUS DC-DC BUCK CONVERTER OBSOLETE – PART DISCONTINUED Description Pin Assignments The AP3203 is a 380kHz fixed frequency, current mode, PWM buck (step-down) DC-DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. The device integrates Nchannel power MOSFET switch with low on-resistance. The current mode control provides fast transient response and cycle-by-cycle current limit. (Top View) A standard series of inductors are available from several different manufacturers optimized for use with the AP3203. This feature greatly simplifies the design of switch-mode power supplies. BS 1 8 SS IN 2 7 EN SW 3 6 COMP GND 4 5 FB This IC is available in PSOP-8 package. PSOP-8 Features • Input Voltage Range: 4.75V to 18V Applications • Fixed 380kHz Frequency • Portable DVD • High Efficiency: up to 93% • DPF • Output Current: 3A • LCD-TV Current Mode Control • STB • • Built-in Over Current Protection • Built-in Thermal Shutdown Function • Built-in UVLO Function • • Built-in Over Voltage Protection Programmable Soft-start Typical Applications Circuit Input 12V 10nF VIN BS SW EN CIN 10 µF AP3203 SS CSS 0.1 µF FB C Document number: DS41392 Rev. 2 - 4 R2 16.9k COMP GND Optional AP3203 Output 3.3V/3A 10 µH CC 8.2nF RC 2.2 k 1 of 8 www.diodes.com R1 10k C OUT 22µF X2  May 2019 © Diodes Incorporated AP3203 OBSOLETE – PART DISCONTINUED Pin Descriptions Pin Number Pin Name 1 BS 2 IN 3 SW Power switch output pin. This pin is connected to the inductor and bootstrap capacitor 4 GND Ground pin 5 FB 6 COMP 7 EN 8 SS Function Bootstrap pin. A bootstrap capacitor is connected between the BS pin and SW pin. The voltage across the bootstrap capacitor drives the internal high-side NMOS switch Supply input pin. A capacitor should be connected between the IN pin and GND pin to keep the DC input voltage constant Feedback pin. This pin is connected to an external resistor divider to program the system output voltage. When the FB pin voltage exceeds 20% of the nominal regulation value of 1.222V, the over voltage protection is triggered. When the FB pin voltage is below 0.6V, the oscillator frequency is lowered to realize short circuit protection Compensation pin. This pin is the output of the transconductance error amplifier and the input to the current comparator. It is used to compensate the control loop. Connect a series RC network from this pin to GND. In some cases, an additional capacitor from this pin to GND pin is required Control input pin. Forcing this pin above 1.5V or set this pin floating enables the IC. Forcing this pin below 0.5V shuts down the IC. When the IC is in shutdown mode, all functions are disabled to decrease the supply current below 1μA Soft-start control input. SS controls the soft-start period. Connect a capacitor from SS to GND to set the soft-start period. A 0.1µF capacitor sets the soft-start period to 10ms. To disable the soft-start feature, leave SS disconnected Functional Block Diagram IN 2 Internal Bias and Regulator Internal Pull High VA Current Sense SLOP COMP Amplifier VB 5V Oscillator 90k/380k CLK Shutdown Comparator EN S Q R Q PWM Comparator 7 0.4/1.5V 0.6 1.222 FB Document number: DS41392 Rev. 2 - 4 3 SW M1 0.12Ω 1.3V 5 AP3203 BS M2 10Ω 4 VB Short Protection Comparator 1 Error Amplifier 6 COMP 2 of 8 www.diodes.com GND 6µA 8 SS May 2019 © Diodes Incorporated AP3203 Absolute Maximum Ratings (Note 1) OBSOLETE – PART DISCONTINUED Symbol Value Unit VIN IN Pin Voltage -0.3 to 20 V VEN EN Pin Voltage -0.3 to VIN V VSW SW Pin Voltage 21 V VBS BS Pin Voltage -0.3 to VSW+6 V VFB FB Pin Voltage -0.3 to 6 V COMP Pin Voltage -0.3 to 6 V VSS SS Pin Voltage -0.3 to 6 V θJA Thermal Resistance 105 ºC/W TJ Operating Junction Temperature +150 ºC -65 to +150 ºC VCOMP Note 1: Parameter TSTG Storage Temperature TLEAD Lead Temperature (Soldering, 10sec) +260 ºC _ ESD (Machine Model) 200 V _ ESD (Human Body Model) 2000 V 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 Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Symbol VIN IOUT (Max) TA Parameter Min Max Unit Input Voltage 4.75 18 V 3 _ A -40 +85 ºC Maximum Output Current Operating Ambient Temperature AP3203 Document number: DS41392 Rev. 2 - 4 3 of 8 www.diodes.com May 2019 © Diodes Incorporated AP3203 Electrical Characteristics (VIN=VEN=12V, VOUT=3.3V, TA=+25 ºC, unless otherwise specified. And those in boldface type apply over the full operating temperature rang (TA=-40ºC to +85ºC).) Parameter VIN Input Voltage _ IQ Quiescent Current ISHDN OBSOLETE – PART DISCONTINUED Symbol Min Typ Max Unit 4.75 _ 18 V VEN=2V, VFB=1.35V _ 1.0 1.5 mA Shutdown Supply Current VEN=0V _ 1 10 μA VFB Feedback Voltage _ 1.185 1.222 1.258 V VFBOV Feedback Over Voltage Threshold _ _ 1.48 _ V Feedback SCP Voltage Threshold _ _ 0.6 _ V Feedback Bias Current VFB= 1V -0.1 _ 0.1 μA RDSONH Upper Switch On-resistance ISW=0.5A _ 0.12 _ Ω RDSONL Lower Switch On-resistance ISW=0.05A _ 10 _ Ω ILEAKH High-side Switch Leakage Current VIN=18V, VEN=0V VSW=0V _ 0.1 10 μA ILIMH High-side Switch Current Limit _ 4 5.2 _ A ILIML Low-side Switch Current Limit From Drain to Source _ 0.15 _ A _ 1.5 _ _ V _ _ _ 0.5 V _ 1.0 3.55 3.85 4.15 V VFB_SCP IFB VENH Conditions EN Pin Threshold VENL Note 2: μA IEN_PH EN Pull-up Current VEN=0V VUVLO Input UVLO Threshold VIN Rising VHYS Input UVLO Hysteresis _ _ 0.3 _ V fOSC1 Oscillator Frequency _ _ 380 _ kHz fOSC2 Short Circuit Oscillator Frequency _ _ 80 _ kHz DMAX Maximum Duty Cycle VFB=1.0V _ 90 _ % DMIN Minimum Duty Cycle VFB=1.35V _ _ 0 % AEA Error Amplifier Voltage Gain (Note 3) _ _ 400 _ V/V GEA Error Amplifier Transconductance _ 700 950 1200 μA/V GCS COMP to Current Sense Transconductance _ _ 5.4 _ A/V TOTSD Thermal Shutdown (Note 3) _ _ +160 _ ºC THYS Thermal Shutdown Hysteresis (Note 3) _ _ +30 _ ºC tSS Soft-start Time (Note 3) C4=0.1μF, IOUT=500mA _ 10 _ ms ISS Soft-start Current _ _ 6 _ μA RDSON = VSW 1 − VSW 2 I SW 1 − I SW 2 Note 3: Not tested, guaranteed by design. AP3203 Document number: DS41392 Rev. 2 - 4 4 of 8 www.diodes.com May 2019 © Diodes Incorporated AP3203 Performance Characteristics (TA=+25ºC, VIN=12V, VOUT=3.3V, unless otherwise noted.) Efficiency vs. Output Current Quiescent Current vs. Temperature 100 1.40 1.35 90 1.20 Quiescent Current (mA) 1.25 70 Efficiency (%) 60 50 40 30 VIN=12V VIN=5V 20 10 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 0.75 0 0.70 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -60 -40 -20 0 Output Current (A) 40 60 80 100 120 140 Feedback Voltage vs. Temperature 3.50 1.30 3.45 1.28 3.40 1.26 3.35 1.24 Feedback Volage (V) Output Voltage (V) 20 Temperature (oC) Output Voltage vs. Output Current 3.30 3.25 3.20 3.15 3.10 1.22 1.20 1.18 1.16 1.14 1.12 3.05 1.10 3.00 0.0 0.5 1.0 1.5 2.0 2.5 -60 3.0 -40 -20 Output Current (A) 0 20 40 60 80 100 120 140 120 140 o Temperature ( C) RDSONH vs. Temperature RDSONL vs. Temperature 170 18 Low-side Switch On-resistance (Ω) 160 High-side Switch On-resistance (mΩ) OBSOLETE – PART DISCONTINUED 1.30 80 150 140 130 120 110 100 90 80 70 16 14 12 10 60 8 6 -60 -40 -20 0 20 40 60 80 100 120 140 Temperature (oC) AP3203 Document number: DS41392 Rev. 2 - 4 -40 -20 0 20 40 60 80 100 Temperature (oC) 5 of 8 www.diodes.com May 2019 © Diodes Incorporated AP3203 Performance Characteristics (Cont. TA=+25ºC, VIN=12V, VOUT=3.3V, unless otherwise noted.) OBSOLETE – PART DISCONTINUED Output Ripple (VIN=12V,VOUT=3.3V, IOUT=3A) Load Transient (VIN=12V, VOUT=3.3V, IOUT=2A to 3A) IL 1A/div IL 1A/div VOUT(AC) 20mV/div VOUT(AC) 200mV/div VSW 5V/div Time 2μs/div Time 400μs/div Enable Turn Off (VIN=12V,VOUT=3.3V, IOUT=3A, with Resister load) VEN 2V/div Enable Turn On (VIN=12V,VOUT=3.3V, IOUT=3A, with Resistance Load) VEN 2V/div VOUT 1V/div VOUT 1V/div IL 2A/div IL 2A/div VSW 5V/div VSW 5V/div Time 10ms/div Time 10ms/div Short Circuit Protection (VIN=12V, VOUT=3.3V, IOUT=3A) VOUT 2V/div Short Circuit Recovery (VIN=12V, VOUT=3.3V, IOUT=3A) VOUT 2V/div IL 2A/div IL 2A/div VSW 5V/div VSW 5V/div Time 400μs/div Time 200μs/div AP3203 Document number: DS41392 Rev. 2 - 4 6 of 8 www.diodes.com May 2019 © Diodes Incorporated AP3203 Ordering Information Product Name Note 4: Package Temperature Range PSOP-8 -40 to +85ºC Package Packing RoHS/Green MP : PSOP-8 TR : Tape & Reel Blank : Tube G1:RoHS Compliant and Green Part Number Marking ID Packing AP3203MP-G1 3203MP-G1 Tube AP3203MPTR-G1(Note 4) 3203MP-G1 Tape & Reel EOL = End of life. Package Outline Dimensions (All dimensions in mm.) (1) Package Type: PSOP-8 3.800(0.150) 4.000(0.157) 2.313(0.091) 2.513(0.099) 3.202(0.126) 3.402(0.134) OBSOLETE – PART DISCONTINUED AP3203 X X - X 1.270(0.050) TYP 4.700(0.185) 5.100(0.201) 0.330(0.013) 0.510(0.020) 5.800(0.228) 6.200(0.244) 0.050(0.002) 0.150(0.006) 1.350(0.053) 1.550(0.061) 1.350(0.053) 0° 8° 1.750(0.069) 0.400(0.016) 1.270(0.050) 0.170(0.007) 0.250(0.010) Note: Eject hole, oriented hole and mold mark is optional. AP3203 Document number: DS41392 Rev. 2 - 4 7 of 8 www.diodes.com May 2019 © Diodes Incorporated AP3203 IMPORTANT NOTICE OBSOLETE – PART DISCONTINUED 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 under 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 Diodes 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 out 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 names 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 in 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, Customers 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 © 2019, Diodes Incorporated www.diodes.com AP3203 Document number: DS41392 Rev. 2 - 4 8 of 8 www.diodes.com May 2019 © Diodes Incorporated