AP3409/A

Document overview

  • Manufacturer or author: Diodes Incorporated
  • PDF pages: 11

Technical content

Features

  • Input Voltage Range: 2.6V to 5.5V
  • Adjustable Output from 0.8V to 5V
  • 0.8V Reference Voltage with ± 2% Precision
  • Output Current: 3A
  • High Efficiency up to 95%
  • Low RDSON Internal Switches
  • Programmable Frequency: 300kHz to 4MHz
  • Current Mode Control
  • Forced Continuous-mode Operation
  • 100% Duty Cycle
  • Built-in Soft-start
  • Built-in Short Circuit Protection
  • Built-in Thermal Shutdown Protection
  • Built-in Current Limit Function
  • PGOOD Output Voltage Monitoring (For AP3409A)
  • U-DFN3030-10 package
  • Totally Lead-free & Fully RoHS Compliant (Note 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) U-DFN3030-10 (DN Package) For AP3409 (Top View) U-DFN3030-10 (DN Package) For AP3409A

Applications

  • Portable Media Player
  • Digital Still and Video Cameras
  • Notebook 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. SHDN/RT GND SW SW PGND COMP FB VDD PVDD PVDD Pin 1 Mark 5 6 Exposed Pad Connected to PGND SHDN/RT GND SW SW PGND COMP FB PGOOD VDD PVDD Pin 1 Mark 5 6 Exposed Pad Connected to PGND PART OBSOLETE – CONTACT US

Document number: DS36789 Rev. 3 - 4 2 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED Typical Applications Circuit (Note 4) AP3409 SHDN/RT GND SW PGND COMP FB VDD PVDD VIN ROSC 330k L1 2.0µH CIN 22µF 22pF COUT 22µF ×2 510k R2 240k CCOMP 1000pFRCOMP 30k VOUT 2.5V/3A Typical Application of AP3409 AP3409A SHDN/RT GND SW PGND COMP FB PGOOD VDD (PVDD) VIN ROSC 330k L1 2.0µH CIN 22µF 22pF COUT 22µF ×2 510k R2 240k CCOMP 1000pFRCOMP 30k VOUT 2.5V/3A 100k Typical Application of AP3409A Notes 4: )21( R RRVV FB OUT +×=

Document number: DS36789 Rev. 3 - 4 3 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED Pin Descriptions Pin Number Pin Name Function AP3409 AP3409A 1 1 SHDN/RT Oscillator resistor input. Connect a resistor to GND from this pin to set the switching frequency. Forcing this pin to VDD to shutdown the device 2 2 GND Signal ground. All small -signal ground, such as the compensation components and exposed pad should be connected to this, which in turn connects to PGND at one point 3, 4 3, 4 SW Internal power switch output. Connect this pin with one terminal of the inductor 5 5 PGND Power ground. Connect this pin as close as possible to CIN and COUT 6, 7 6 PVDD Power Input Supply. Decouple this pin to PGND with a capacitor 8 7 VDD Signal input supply. Decouple this pin to GND with a capacitor. Normally VDD is equal to VPVDD – 8 PGOOD Power good indicator. This pin is open -drain logic output that is pulled to ground when the output voltage is not within ±12.5% of regulation point 9 9 FB Feedback voltage. This pin is the inverting input of internal error amplifier. It senses the converter output voltage through an external resistor divider. The internal reference voltage is 0.8V, which determines the output voltage through the resistor divider 10 10 COMP Compensation input. This pin is the output of internal error amplifier. Connect external compensation elements to this pin to stabilize the control loop Functional Block Diagram SD Oscillator SUM CS 0.8V EA OCP Driver Control Logic OTPUVLOVREF 0.4V SHDN/RT PVDD SW GND PGND VDD FB COMP 3, 4 6, 7 PWM Clamp SS DC Functional Block Diagram of AP3409

Document number: DS36789 Rev. 3 - 4 4 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED Functional Block Diagram (Cont.) SD Oscillator SUM CS 0.8V EA OCP Driver Control Logic OTPUVLO 0.4V SHDN/RT PVDD SW GND PGND VDD FB COMP 3, 4 PWM Clamp SS DC PGOOD VREF 0.725V 0.9V Functional Block Diagram of AP3409A Absolute Maximum Ratings (Note 5) Symbol Parameter Rating Unit VDD VDD Pin Voltage -0.3 to 6 V VPVDD PVDD Pin Voltage -0.3 to 6 V VFB FB Pin Voltage -0.3 to 6 V VCOMP COMP Pin Voltage -0.3 to 6 V VSW SW Pin Voltage -0.3 to VIN+0.3 V VRT SHDN/RT Pin Voltage -0.3 to 6 V θJA Thermal Resistance (Junction to Ambient) 110 ºC/W θJC Thermal Resistance (Junction to Case) 3 ºC/W TJ Operating Junction Temperature +150 ºC TSTG Storage Temperature -65 to +150 ºC TLEAD Lead Temperature (Soldering, 10 sec) +260 ºC – ESD (Machine Model) 200 V – ESD (Human Body Model) 2000 V Note 5: Stresses greater t han those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, an d 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.

Document number: DS36789 Rev. 3 - 4 5 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input Voltage 2.6 5.5 V IOUT (MAX) Maximum Output Current 3 – A TJ Operating Junction Temperature -40 +125 ºC Electrical Characteristics (VIN=VDD=VPVDD=3.3V, TA=+25oC, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit INPUT SECTION VDD Input Voltage Range 2.6 – 5.5 V IQ Supply Current VFB=0.75V, No Switching – 460 – µA ISHDN Shutdown Supply Current Shutdown, VIN=5.5V – – 1 µA VUVLO Under Voltage Threshold Lockout VDD Rising – 2.2 – V VHUVLO Under Voltage Hysteresis Lockout – – 300 – mV FEEDBACK SECTION VFB Feedback Voltage – 0.784 0.8 0.816 V IFB FB Pin Bias Current – – 0.1 0.4 µA RT Current Sense Trans-resistance – – 0.2 – Ω – Switching Leakage Current VSHDN/RT=VIN=5.5V – – 1 µA GV Error Gain Amplifier Voltage – – 800 – – GS Error Amplifier Trans-conductance – – 800 – µA/V OSCILLATOR SECTION VRT RT Pin Voltage – 0.76 0.8 0.84 V fOSC Switching Frequency ROSC=330kΩ 0.8 1 1.2 MHz ADJ Frequency 0.3 – 4 MHz DMAX Maximum Duty Cycle VFB=0.75V 100 – – % POWER SWITCH SECTION ILIMIT Switch Current Limit AP3409 VFB=0.75V 3.2 4.2 – A AP3409A 3.5 4.2 – A RPDSON Internal P-FET On Resistance ISW=500mA – 0.11 0.16 Ω RNDSON Internal N-FET On Resistance ISW=-500mA – 0.11 0.17 Ω SHDN/RT SECTION – Shutdown Threshold – – VDD-0.7 VDD-0.4 V PGOOD SECTION (Only for AP3409A) – PGOOD Voltage Range – – ±12.5 ±15 % – PGOOD Pull Down Resistance – – – 120 Ω TOTAL DEVICE IOUT Output Current VDD=2.6V to 5.5V, VOUT=2.5V 3 – – A LNR Output Voltage Line Regulation VDD=2.7V to 5.5V, IOUT=100mA – 0.4 – %/V LOD Output Voltage Load Regulation IOUT=0.01A to 3A – ±0.2 – % tSS Soft-start Time IOUT＝10mA – 1.5 – ms TOTSD Thermal Shutdown Temperature – – +160 – ºC THYS Thermal Shutdown Temperature Hysteresis – – +20 – ºC

Document number: DS36789 Rev. 3 - 4 6 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED 100 200 300 400 500 600 Supply Current (µA) Input Voltage (V) VFB=0.75V -60 -30 0 30 60 90 120 150 100 200 300 400 500 600 700 Supply Current (µA) Ambient Temperature ( o VIN=3.3V VFB=0.75V Performance Characteristics (VIN=VDD=VPVDD=3.3V, TA=+25oC, unless otherwise specified.) Supply Current vs. Input Voltage Supply Current vs. Ambient Temperature Efficiency vs. Output Current PMOS ON Resistance vs. Ambient Temperature NMOS ON Resistance vs. Ambient Temperature Frequency vs. Ambient Temperature 0 500 1000 1500 2000 2500 3000 3500 100 Efficiency (%) Output Current (mA) VOUT=2.5V VIN=5.0V VIN=3.3V -60 -30 0 30 60 90 120 150 100 120 140 PMOS ON Resistance (mΩ) Ambient Temperature ( O VIN=3.3V VFB=0.75V -60 -30 0 30 60 90 120 150 0.7 0.8 0.9 1.0 1.1 1.2 Frequency (MHz) Ambient Temperature ( O VIN=3.3V VOUT=2.5V -60 -30 0 30 60 90 120 150 100 120 140 NMOS ON Resistance (mΩ) Ambient Temperature ( O VIN=3.3V VFB=0.85V

Document number: DS36789 Rev. 3 - 4 7 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED -60 -30 0 30 60 90 120 150 Current Limit (A) Ambient Temperature ( O VIN=3.3V VFB=0.75V Performance Characteristics (Cont. VIN=VDD=VPVDD=3.3V, TA=+25oC, unless otherwise specified.) VFB vs. Ambient Temperature Current Limit vs. Ambient Temperature Start-up from VIN (V IN=3.3V, VOUT=2.5V, IOUT=3A) Load Transient Response (VIN=3.3V, VOUT=2.5V, IOUT=0.5A to 3A) Short Circuit Protection (V IN=3.3V, VOUT=2.5V) Short Circuit Recovery (VIN=3.3V, VOUT=2.5V) -60 -30 0 30 60 90 120 150 0.5 0.6 0.7 0.8 0.9 VFB (V) Ambient Temperature ( O VIN=3.3V VOUT=2.5V VOUT (AC) 50mV/div I OUT 1A/div Time 200µs/div VSW 2V/div VOUT 2V/div IL 2A/div Time 1ms/div VOUT 1V/div I OUT 1A/div Time 4ms/div VOUT 1V/div I OUT 1A/div Time 4ms/div

Document number: DS36789 Rev. 3 - 4 8 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED

Ordering Information

TR : Tape & ReelA: AP3409A G1 : Green Product Name RoHS/GreenPackage DN: U-DFN3030-10 Blank: AP3409 Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green. Package Temperature Range Part Number Marking ID Packing U-DFN3030-10 -40 to +125°C AP3409DNTR-G1 BDA 5000/Tape & Reel AP3409ADNTR-G1 BCA 5000/Tape & Reel Marking Information AP3409 (Top View) AP3409A (Top View) First Line: Logo and Marking ID Second and Third Lines: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch No. First Line: Logo and Marking ID Second and Third Lines: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch No.

Document number: DS36789 Rev. 3 - 4 9 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: U-DFN3030-10 2.900(0.114) 3.100(0.122) 2.900(0.114) 3.100(0.122) 1.500(0.059) 1.800(0.071) 0.200(0.008) 0.300(0.012) 0.500(0.020) TYP 0.250(0.010) 0.550(0.022) 0.000(0.000) 0.050(0.002) 2.300(0.090) 2.500(0.098) N1N5 N6 N10 Pin 1 Mark PIN #1 IDENTIFICATION See DETAIL A DETAIL A 12 12 Pin 1 options Symbol A min(mm) max(mm) min(inch) max(inch) Option 1 Option 2 0.700 0.570 0.800 0.630 0.028 0.022 0.031 0.025 min(mm) max(mm) min(inch) max(inch) 0.153 0.150 (Typ) 0.253 0.006 0.006 (Typ) 0.010 A

Document number: DS36789 Rev. 3 - 4 10 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED Suggested Pad Layout (1) Package Type: U-DFN3030-10 Y2 Y E Dimensions Y (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) E (mm)/(inch)

Document number: DS36789 Rev. 3 - 4 11 of 11 www.diodes.com July 2021 © Diodes Incorporated AP3409/A OBSOLETE – PART DISCONTINUED IMPORTANT NOTICE 1. DIODES INCORPORATED AND ITS SUBSIDIARIES (“DIODES”) MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGA RDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON -INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 2. The Information contained herein is for informational purpose only and is provided only to illustrate the operation of Diodes products described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who design with Diodes products. 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