AP3419

Document overview

  • Manufacturer or author: Diodes Incorporated
  • PDF pages: 9

Technical content

Features

  • Output Current: Up to 2A
  • Output Voltage: 0.6V to VIN
  • Input Voltage: 2.7V to 5.5V
  • Peak Efficiency Up to 95%
  • 90μA (Typ) No Load Quiescent Current
  • Shutdown Current: <1μA
  • 100% Duty Cycle Operation
  • 1MHz Switching Frequency
  • Internal Soft Start
  • No External Compensation Required
  • Current Limit Protection
  • Thermal Shutdown
  • TSOT26 package
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/ Pin Assignments (Top View) EN LX VIN FB GND NC Pin Pin Mark Mark TSOT26

Applications

  • 5V or 3.3V Point of Load Conversion
  • Telecom/Networking Equipment
  • Set Top Boxes
  • Storage Equipment
  • Video Cards
  • DDR Power Supply Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead- free/ for more information about Diodes Incorporated’s definitions of Halogen- 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. NOT RECOMMENDED FOR NEW DESIGN CONTACT US AP3419 Document number: DS36543 Rev. 5 - 3 1 of 9 www.diodes.com February 2020 © Diodes Incorporated

Typical Applications Circuit VIN EN LX FB L1 2.2µHCIN 22µF VIN=2.7V to 5.5V GND COUT 22µFx2 VOUT=1.8V ON OFF AP3419 22pF 300k 150k Pin Descriptions Pin Number Pin Name Function 1 EN Enable control input. Force this pin voltage above 1.5V enables the chip, and below 0.4V shuts down the device

2 GND Ground pin

3 LX The drains of the internal main and synchronous power MOSFETs

4 VIN Bias supply. Chip main power supply pin

5 NC No connected

6 FB Feedback voltage to internal error amplifier. The threshold voltage is 0.6V AP3419 Document number: DS36543 Rev. 5 - 3 2 of 9 www.diodes.com February 2020 © Diodes Incorporated

0.6V REF S R Q QEA SWITCHING LOGIC AND BLOCKING CIRCUIT ANTI- SHOOT THRU PWM COMP IAMP FB EN VIN LX GND VIN SHUTDOWN ____ OSC Absolute Maximum Ratings (Note 4) Symbol Parameter Rating Unit VIN Input Voltage -0.3 to 6 V VEN EN Pin Voltage -0.3 to VIN+0.3 V VLX LX Pin Voltage -0.3 to VIN+0.3 V VFB Feedback Pin Voltage -0.3 to VIN+0.3 V θJA Thermal Resistance (Junction to Ambient) 220 °C/W TJ Operating Junction Temperature +150 °C TSTG Storage Temperature -65 to +150 °C TLEAD Lead Temperature (Soldering, 5 sec) +300 °C VMM ESD (Machine Model) 200 V VHBM ESD (Human Body Model) 2000 V Note: 4. Stresses greater than those listed under Absolute Maximum Ratings can 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 can affect device reliability. AP3419 Document number: DS36543 Rev. 5 - 3 3 of 9 www.diodes.com February 2020 © Diodes Incorporated

Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input Voltage Range 2.7 5.5 V TA Operating Ambient Temperature -40 +85 °C TJ Junction Temperature Range -40 +125 °C Electrical Characteristics (@VIN = 5V, VOUT = 1.8V, L = 2.2µH, COUT = 22µFx2, TA = +25°C, unless otherwise specified.) Symbol Parameters Conditions Min Typ Max Unit VIN Input Voltage Range — 2.7 — 5.5 V VOUT Output Voltage Range — 0.6 — VIN V VFB Regulated Feedback Voltage — 0.588 0.6 0.612 V IFB FB Leakage Current VFB = 1V — — 0.2 μA IQ Quiescent Current VFB = 0.65V — 90 — μA ISD Shutdown Current VEN = 0V — — 1 μA ILIM Peak Inductor Current — 3 — — A fOSC Oscillator Frequency — — 1 — MHz RDS(ON) Drain to Source On-state Resistance ILX = 100mA, high side — 110 — mΩ ILX = 100mA, low side — 80 — VENH EN High Threshold — 1.5 — — V VENL EN Low Threshold — — — 0.4 V IEN EN Leakage Current VIN = VEN = 5V -1.0 — 1.0 μA VUVLO Input UVLO Threshold — — 2.4 2.7 V VHYS UVLO Hysteresis — — 0.2 — V TOTP Over Temperature Protection — — +160 — °C TOTH OTP Hysteresis — — +30 — °C VIOVP VIN Over Voltage Protection — — 6.25 — V VIHSY IOVP Hysteresis — — 0.25 — V tSS Soft-start Time — — 1.8 — ms AP3419 Document number: DS36543 Rev. 5 - 3 4 of 9 www.diodes.com February 2020 © Diodes Incorporated

Performance Characteristics (@TA = +25°C, VIN = 5V, VOUT = 1.8V, unless otherwise specified.) Efficiency vs. Load Current Feedback Reference Voltage vs. Temperature PFET Drain-Source On-State Resistance vs. Temperature NFET Drain-Source On-State Resistance vs. Temperature Inductor Current Limit vs. Temperature Oscillation Frequency vs. Temperature -60 -40 -20 0 20 40 60 80 100 120 140 0.580 0.585 0.590 0.595 0.600 0.605 0.610 0.615 0.620 Feedbaxk Reference Voltage (V) Temperature ( o -60 -40 -20 0 20 40 60 80 100 120 140 100 110 120 130 140 150 160 170 180 190 200 PFET RDS(ON) (mΩ) Temperture ( o 1 10 100 1000 100 Efficiency (%) IOUT (mA) VIN=5V, VOUT=1.0V VIN=5V, VOUT=1.8V VIN=5V, VOUT=3.3V -60 -40 -20 0 20 40 60 80 100 120 140 100 110 120 NFET RDS(ON) (mΩ) Temperture ( o -60 -40 -20 0 20 40 60 80 100 120 140 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 Inductor Current Limit (A) Temperature ( o -60 -40 -20 0 20 40 60 80 100 120 140 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 Oscilliator Frequecny (MHz) Temperature ( o AP3419 Document number: DS36543 Rev. 5 - 3 5 of 9 www.diodes.com February 2020 © Diodes Incorporated

Performance Characteristics (@TA = +25°C, VIN = 5V, VOUT = 1.8V, unless otherwise specified.) (continued) Enable Turn on Characteristic (IOUT=2A) Enable Turn off Characteristic (IOUT=2A) Time (5ms/div) Time (5ms/div) Short Current Protection (IOUT=2A) SCP Recovery (IOUT=2A) Time (50ms/div) Time (50ms/div) Load Transient (IOUT=0.1A to 2A) Load Transient (IOUT=1A to 2A) Time (100µs/div) Time (100µs/div) VEN (2V/div) VOUT (1V/div) IL (2A/div) VSW (5V/div) VOUT (1V/div) IL (2A/div) VSW (5V/div) VEN (2V/div) VOUT (1V/div) IL (2A/div) VSW (5V/div) VOUT (1V/div) IL (2A/div) VSW (5V/div) VOUT_AC (100mV/div) IOUT (1A/div) VOUT_AC (100mV/div) IOUT (1A/div) AP3419 Document number: DS36543 Rev. 5 - 3 6 of 9 www.diodes.com February 2020 © Diodes Incorporated

Application Information

Typical application circuit is shown in the application circuit and for the circuit parameters setting please refers to the following descriptions. Under Voltage Lockout (UVLO) Circuit When the V IN drops lower than the UVLO detector threshold, the UVLO circuit starts to operate, V REF stops, and high- side switch and low -side switch built-in switch transistors turn “OFF”. As a result, V OUT drops according to the COUT capacitance value and the load. When the V IN is rising higher than UVLO released voltage, the IC will restart the operation. Short Circuit Protection and Recovery When the AP34 19 output node is shorted to GND that VFB drops under 0. 3V, AP3419 will enter hiccup mode to protect itself . If short circuit is removed, and VFB rises over 0.3V, the AP3419 recovers to normal operation again. If the AP341 9 reaches OCP threshold while short circuit, the AP3419 will enter cycle by cycle current limit mode until the current under OCP threshold. Over Temperature Protection The internal thermal temperature protection circuitry is provided to protect the integrated circuit in the event that the maximum junction temperature is exceeded. When the junction temperature exceeds +160°C, it shuts down the internal control circuit and switching power MOSFET. The AP3419 will restart automatically under the control of soft start circuit when the junction temperature decreases to +130°C. Input Over Voltage Protection When input voltage of AP3419 is near 6.25V, the IC will enter Input -Over-Voltage-Protection. It would be shut down and there will be no output voltage in this state. As the input voltage goes down below 6V, it will leave input OVP and recover the output voltage.

Ordering Information

TR: Tape & Reel AP3419 XX XX - XX PackingPackageProduct Name KT : TSOT26 G1 : Green Package Temperature Range Part Number Marking ID Packing TSOT26 -40 to +85°C AP3419KTTR-G1 L8J 3000/Tape & Reel Marking Information (Top View) First Line: Logo and Marking ID AP3419 Document number: DS36543 Rev. 5 - 3 7 of 9 www.diodes.com February 2020 © Diodes Incorporated

Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: TSOT26 Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: TSOT26 TSOT26 Dim Min Max Typ A − 1.00 − A1 0.01 0.10 − A2 0.84 0.90 − D − − 2.90 E − − 2.80 E1 − − 1.60 b 0.30 0.45 − c 0.12 0.20 − e − − 0.95 e1 − − 1.90 L 0.30 0.50 L2 − − 0.25 θ 0° 8° 4° θ1 4° 12° − All Dimensions in mm Dimensions Value (in mm) C 0.950 X 0.700 Y 1.000 Y1 3.199 C C X (6x) Y (6x) c L E1 E D e 6x b θ 4x 1 θ A AP3419 Document number: DS36543 Rev. 5 - 3 8 of 9 www.diodes.com February 2020 © Diodes Incorporated

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