Features

Document overview

  • Manufacturer or author: gigabyte
  • PDF pages: 8

Technical content

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED Lead-free

  • Input voltage range: 2.2V~5V (VOUT type)
  • Oscillator frequency: 700KHz (Typ.)
  • Internal reference: 1.0V (Typ.)
  • High efficiency: 93% (Typ.)
  • Current limit and thermal shutdown protection
  • Lead Free Package: SOP-8L
  • SOP-8L: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant (Note 1)
  • 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-definition The AP1635 series are multi-functional step-down DC/DC converters with built-in speed, low ON resistance drivers. It is capable to deliver more than 1.2A output current with external coil, diode and capacitor. Output voltage is set-up by the external resistors. (±2.5% accuracy). The 700KHz AP1635 that can work out with small value external components comes out more compact board. The device switches to and works under PFM mode with light loads. It keeps at high efficiency for both light loads and large output current. AP1635 can be soft-start with a proper capacitor connected between CE/SS pin and ground. The stand-by current is less than 6uA when CE/SS pin is at “LOW” status. The device is forced to switch off as the voltage at that pin is lower than the stipulated voltage.

Applications

  • Electronic Information Organizers
  • Palmtops
  • Cellular and portable phones
  • Portable Audio Systems
  • Various Multi-function Power Supplies

Ordering Information

13 : Tape & Reel G : Green S : SOP-8L L : Lead Free Device Package Code Packaging (Note 2) 13” Tape and Reel Quantity Part Number Suffix AP1635SL-13 S SOP-8L 2500/Tape & Reel -13 AP1635SG-13 S SOP-8L 2500/Tape & Reel -13 Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html . 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Features General Description PART OBSOLETE - USE AP61100 AP1635 Rev. 5 1 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED Pin Assignments FB SWSVcc SW CE/SS GND GND PVcc ( Top View ) SOP-8L Pin Descriptions Pin Name Pin No. Description FB 1 Feedback pin CE/SS 2 Chip Enable/ Soft Start: H: Enable L: Disable SVcc 3 IC signal power supply pin, add a 20Ω resistor to PVcc and a 0.1µF capacitor to GND. PVcc 4 IC power supply pin SW 5/6 Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin to reduce EMI. GND 7/8 GND Pin AP1635 Rev. 5 2 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED Block Diagram Phase Compensation Vref with CE PWM/PFM Controller Ramp Wave Generator, OSC SW CE/SS GND PVcc PWM Comparator FB Current Limit Soft Start ERR AMP SVcc Absolute Maximum Ratings (TA=25°C) Symbol Parameter Ratings Units VCC/SVCC VIN Pin Voltage -0.3 ~ 5.0 V VSW SW Pin Voltage -0.3 ~ V IN+0.3 V VFB FB Pin Voltage -0.3 ~ V IN+0.3 V VCE/SS CE/SS Pin Voltage -0.3 ~ V IN+0.3 V PD Continuous Total Power Dissipation Internal limited TOPR Operating Ambient Temperature -25 ~ +80 °C TSTG Storage Temperature -40 ~ +125 °C AP1635 Rev. 5 3 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED

Electrical Characteristics

VIN=5V, VOUT＝2V, Load=300mA, TA=25°C Symbol Parameter Conditions Min Typ. Max Units VFB FB 0.975 1.0 1.025 V VIN Input Voltage 2.2 - 5 V Line Regulation VIN=2.2~5V, Load=10mA - - 0.12 % Load Regulation IOUT=10~1200mA - - 1.2 % VUVLO UVLO Voltage（min. operating voltage） VCC, voltage required to maintain H at VOUT - - 2 V ICC Operating Current CE/SS=VIN, No Load - 100 150 μA ICCQ Supply Current No external components, CE/SS=VIN, VFB=1.2V - 90 120 μA ISTB Stand-by Current No external components, CE/SS=0V, VFB=0V - 6 - μA ICL Current Limit Peak current VIN=5V, VOUT=2V 1200 1400 1600 mA Fosc Oscillator Frequency Load=300mA, VIN=5V, VOUT=2V 500 700 - kHz MAXDTY Maximum Duty Ratio 85 90 - % PFMDTY PFM Duty Ratio No load 15 25 35 % VCEH CE/SS ”High” Voltage Apply 1.4V (min.) to CE/SS, determine VOUT “High” 1.4 - - V VCEL CE/SS ”Low” Voltage Same as VCEH, determine VOUT/“Low” - - 0.6 V EFFI Efficiency VCC=5V, VOUT=3.3V, Load=300mA - 93 - % Rdson Rdson Condition IOUT=300mA, VIN=5V, VOUT=2V - 350 450 mΩ AP1635 Rev. 5 4 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED Typical Performance Characteristics Vcc vs. Operating Current Vcc vs. Quiescent Current Icc (uA) 100 120 140 160 180 200 2.5 3 3.5 4 4.5 5 Vcc (V) Operating Current (uA) 100 120 140 160 180 200 2.5 3 3.5 4 4.5 5 Vcc (V) Quiescent Current (uA) Vcc vs. Stand-by Current Vcc vs. Frequency 4.5 5.5 6.5 7.5 2.5 3 3.5 4 4.5 5 Vcc (V) Stand-by Current (uA) 600 620 640 660 680 700 720 740 760 780 800 2.5 3 3.5 4 4.5 5 Vcc (V) Frequency (KHz) Vcc vs. Current Limit Vcc vs. RDS(ON) 0.5 0.6 0.7 0.8 0.9 1.1 1.2 1.3 1.4 3 3.5 4 4.5 5 Vcc Current Limit (A) Current Limit Vout=2V 100 200 300 400 500 600 2.5 3 3.5 4 4.5 5 RDS(ON) (mΩ) Vcc (V) AP1635 Rev. 5 5 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED Typical Performance Characteristics (Continued) Line Regulation Load Regulation -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 2.5 3 3.5 4 4.5 5 Vcc (V) V / VOUT (%) 0 200 400 600 800 1000 1200 Load (mA) V / VOUT (%) Typical Application Circuit 0.1uF VIN FB PVcc GND 10uH AP1635 SW CE/SS 2.2V ~ 5.5V B240A R2 R1 0.1uF 68uF VOUT 1nF SVcc Ω Ω 68u Vout = 1×(1 + R2 ) R1=100K ~ 200K AP1635 Rev. 5 6 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED Marking Information (1) SOP-8L Package Information (All Dimensions in mm) (1) Package Type: SOP-8L 1.27typ 0.3/0.5 7°~9° 4.85/4.95 3.85/3.95 5.90/6.10 0.15/0.25 7°~9° 0.62/0.82 0.10/0.20 Gauge Plane 0.254 Seating Plane 0.35max. 45° Detail "A" Detail "A" 1.30/1.50 1.75max. Land Pattern Recommendation (Unit: mm) 6x-1.27 8x-1.55 8x-0.60 5.4 0°/8° AP1635 Rev. 5 7 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated

PWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER OBSOLETE – PART DISCONTINUED 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, correcti ons 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 Inc orporated 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 attor ney 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 suc h safety-critical, life support devices or systems. Copyright © 2020, Diodes Incorporated www.diodes.com AP1635 Rev. 5 8 of 8 MARCH 2020 www.diodes.com © Diodes Incorporated