AP65453 DIODES | Alldatasheet
Document overview
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Technical content
Features
Fixed Frequency Emulated Constant On-time Control Good Stability Independent of the Output Capacitor ESR Fast Load Transient Response Synchronous Rectification: 90mΩ Internal High-side Switch and 57mΩ Internal Low-side Switch Wide Input Voltage Range: 4.5V to 18V Output Voltage Range: 0.76V to 6V 4A Continuous Output Current 650kHz Switching Frequency Built-in Over Current Limit Built-in Thermal Shutdown Protection Programmable Soft-start Pre-biased Start- up Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments SWVREG5 SS EN BS GND VIN ( Top View ) FB SO-8EP
Applications
Gaming Consoles Flat Screen TV Sets and Monitors Set-Top Boxes Distributed Power Systems Home Audio Consumer Electronics Network Systems FPGA, DSP and ASIC Supplies Green Electronics Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2 011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information ab out 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 bro mine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
Figure 1. Typical Application Circuit to turn off. It can be safely connected to VIN directly for automatic startup. possible to the VREG5 and GND. This pin is not active when EN is low. GND 5 Ground pin is the main power ground for the switching circuit. from SW to the output load. Note that a capacitor is required from SW to BS to power the high-side switch. EP - Connect the exposed thermal pad to GND on the PCB.
Figure 2. Functional Block Diagram
Document number: DS37999 Rev. 1 - 2 2 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453 Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.) Symbol Parameter Rating Unit VIN Supply Voltage -0.3 to 20 V VREG5 VREG5 Pin Voltage -0.3V to +6.0 V VSW Switch Node Voltage -1.0 to VIN +0.3 V VBS Bootstrap Voltage -0.3 to VSW +6.0 V VFB Feedback Voltage -0.3V to +6.0 V VEN Enable/UVLO Voltage -0.3V to V IN V VSS Soft-start PIN -0.3V to +6.0 V VGND GND Pin Voltage -0.3 to 0.3 V TST Storage Temperature -65 to +150 °C TJ Junction Temperature +160 °C TL Lead Temperature +260 °C ESD Susceptibility (Note 5) HBM Human Body Model 2 kV MM Machine Model 200 V Notes: 4 . Stresses greater than the 'Absolute Maximum Ratings' specified above m ay cause permanent damage to the device. These are stress ratings on ly; functional operation of the device at these or any other conditions e xceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for ext ended periods of time. 5 . Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be take n when handling and transporting these devices. Thermal Resistance (Note 6) Symbol Parameter Rating Unit JA Junction to Ambient SO-8EP 38.56 °C/W JC Junction to Case SO-8EP 6.85 °C/W Note: 6 . Test condition: SO-8: Device mounted on 1" x 1" FR-4 substrate PCB, 2oz copper, with minimum recommended pad layout. Recommended Operating Conditions (Note 7) (@TA = +25°C, unless otherwise specified.) Symbol Parameter Min Max Unit VIN Supply Voltage 4.5 18.0 V TJ Operating Junction Temperature Range -40 +125 °C TA Operating Ambient Temperature Range -40 +85 °C Note: 7 . The device function is not guaranteed outside of the recommended operatin g conditions.
Document number: DS37999 Rev. 1 - 2 3 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453 Electrical Characteristics (@TA = +25°C, VIN = 12V, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit SUPPLY VOLTAGE (VIN PIN) Input Voltage VIN - 4.5 - 18 V Quiescent Current IQ VFB=0.85V - 0.6 0.75 mA Shutdown Supply Current ISHDN VEN=0V - 1 10 μA UNDER VOLTAGE LOCKOUT UVLO Threshold VUVLO VIN Rising Test VREG5 Voltage 3.6 3.85 4.1 V UVLO Hysteresis VHYS VIN Falling Test VREG5 Voltage 0.16 0.35 0.47 V ENABLE (EN PIN) EN High-level Input Voltage VENH - 1.25 - 18 V EN Low-level Input Voltage VENL - - - 0.85 V VOLTAGE REFERENCE (FB PIN) Feedback Voltage VFB VOUT=1.05V 0.753 0.765 0.777 V Feedback Bias Current IFB VFB=0.8V -0.1 0 0.1 μA VREG5 OUTPUT VREG5 Output Voltage VVREG5 6.0V<VIN<18V 0<IVREG5<5mA 4.8 5.1 5.4 V Source Current Capability - VIN=6V, VVREG5=4V - 100 - mA Load Regulation - 0<IVREG5<5mA - - 100 mV Line Regulation - 6.0V<VIN<18V IVREG5=5mA - - 20 mV MOSFET High-side Switch On-resistance RDSONH - - 0.090 - Ω Low-side Switch On-resistance RDSONL - - 0.057 - Ω CURRENT LIMIT High Level Current Limit ILIM-H L=1.5μH 4.6 5.6 6.9 A ON-TIME TIMER On-Time tON VIN=12V, VOUT=1.05V - 150 - ns Minimum Off-Time tOFF-MIN VFB=0.7V - 260 310 ns THERMAL SHUTDOWN Thermal Shutdown TOTSD - - 150 - °C Thermal Shutdown Hysteresis THYS - - 25 - °C SOFT START (SS PIN) Soft-start Source Current ISS-SOURCE VSS=1.0V 4.2 6.0 7.8 μA Soft-start Discharge Current ISS-DISCHARGE VSS=0.5V 0.1 0.2 - mA OVER VOLTAGE PROTECTION OVP Trip Threshold - - 115 120 125 %
Document number: DS37999 Rev. 1 - 2 4 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453 Typical Performance Characteristics (@TA = +25°C, VIN = 12V, VOUT = 1.05V, unless otherwise specified.) 85˚C -40˚C 25˚C 85˚C 25˚C -40˚C IO=10mA IO=1A VIN=4.5V VIN=18V VIN=12V
Document number: DS37999 Rev. 1 - 2 5 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453 Typical Performance Characteristics (continued) (@TA = +25°C, VIN = 12V, VOUT = 1.05V, unless otherwise specified.) VO=3.3V Vo=3.3V Vo=2.5V VO=2.5V VO=5.0V VO=3.3V VO=2.5V VO=1.05V VO=1.8V VO=1.2V VO=5.0V VO=3.3V VO=2.5V VO=1.05V VO=1.8V VO=1.2V
Document number: DS37999 Rev. 1 - 2 6 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453 Typical Performance Characteristics (cont.) (@TA = +25°C, VIN = 12V, VOUT = 1.05V, L = 1.5µH, C1 = 20µF, C2 = 44µF, unless otherwise specified.) Startup Through VEN 4A Load Time-1ms/div Startup Through VIN 4A Load Time-1ms/div Short Circuit Test Time-200µs/div Shutdown Through VEN 4A Load Time-50µs/div Shutdown Through VIN 4A Load Time-200µs/div Short Circuit Recovery Time-1ms/div Load Transient Response (0 to 4A) Time-100µs/div Load Transient Response (1 to 4A) Time-100µs/div Switching State 4A Load Time-1µs/div Startup with VREG5 Time-1ms/div DCM Voltage Ripple (IO=30mA) Time-1µs/div Voltage Ripple at Input (IO=4A) Time-1µs/div VIN (12V/DIV) VOUT (1V/DIV) IOUT (4A/DIV) SW (10V/DIV) VEN (5V/DIV) IOUT (4A/DIV) SW (10V/DIV) VOUT (1V/DIV) EN (5V/DIV) VREG5 (5V/DIV) VOUT (500mV/DIV) VEN (5V/DIV) VOUT (1V/DIV) IOUT (4A/DIV) SW (10V/DIV) VIN (12V/DIV) VOUT (1V/DIV) IOUT (4A/DIV) SW (10V/DIV) VOUT (500mV/DIV) IOUT (2A/DIV) VOUT (500mV/DIV) IOUT (2A/DIV) VOUT_AC (50mV/DIV) IOUT (2A/DIV) VOUT_AC (50mV/DIV) IOUT (2A/DIV) VOUT_AC (50mV/DIV) IL (2A/DIV) VOUT_AC (100mV/DIV) SW (5V/DIV) VIN_AC (100mV/DIV) IL (2A/DIV)
Document number: DS37999 Rev. 1 - 2 8 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453
Application Information
BS8.25KΩ 22.1KΩ 1.5µH EN VOUT VIN VOUT AP65453 4 5 8.2nF1µF 10µF 22µF 0.1µF 10µF C1 C2 22µF C8 C9 Figure 3. Typical Application of AP65453 evaluation board by FB voltage. The one-shot timer is reset and the high-side MOSFET is turned on again when FB voltage falls below the 0.76V. OFF time, the minimum OFF time will be applied, which is about 260ns typical. In Figure 3, EN is a high voltage input that can be safely connected to VIN (up to 18V) for automatic start-up.
Where LΔI is the inductor ripple current and SWf is the buck converter switching frequency. saturation current rating is important. A 1µH to 3.3µH inductor with a DC current rating of at lea st 25% higher than the maximum load current is recommende d for most applications. The phase boost can be achieved by adding an additional feed forward capacitor (C7) in parallel with R1. Table 2. Recommended Component Selection sustain the ripple current produced during the on time on the upper MOSFET. It must have a low ESR to minimize the losses. input capacitor which has an RMs rating that is greater than half of the maximum load current. Due to large dI/dt through the input capacitors, electroly tic or ceramics should be used. If a tantalum must be used , it must be surge protected. Otherwise, capacitor failure could occur. For most applications, a ceramic capacitor greater than 10µF is sufficient.
Document number: DS37999 Rev. 1 - 2 12 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453
Ordering Information
( Top View ) AP65453 YY WW X Logo Part No E WW : Week : 01~52; 52 YY : Year : 14,15,16~ represents 52 and 53 week E : SO-8EP X X X : Internal Code Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. Part Number Package Code Part Marking Identification Code Tape and Reel Quantity Part Number Suffix AP65453SP-13 SP SO-8EP - 2,500 -13 SO-8EP (SOP-8L-EP) Dim Min Max Typ A 1.40 1.50 1.45 A1 0.00 0.13 - b 0.30 0.50 0.40 C 0.15 0.25 0.20 D 4.85 4.95 4.90 E 3.80 3.90 3.85 E0 3.85 3.95 3.90 E1 5.90 6.10 6.00 e - - 1.27 F 2.75 3.35 3.05 H 2.11 2.71 2.41 L 0.62 0.82 0.72 N - - 0.35 Q 0.60 0.70 0.65 All Dimensions in mm AP65453 XX - 13 PackingPackage SP : SO-8EP 13 : Tape & Reel Gauge Plane Seating Plane E N e b A 45° H F Exposed Pad Bottom View L Q C 4° ± 3° 9° (All sides) D 1 4 8 5
Document number: DS37999 Rev. 1 - 2 13 of 14 www.diodes.com June 2015 © Diodes Incorporated ADVANCED INFORMATION AP65453 Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRES S OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF ME RCHANTABILITY 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, correct ions or other changes without further notice to this document and any produ ct described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product des cribed herein; neither does Diodes Incorporated convey a ny license under its patent or trademark rights, nor the rights of others. Any Custom er or user of this document or products described her ein in such applications shall assume all risks of such use and will agree to hold Diodes Incorpo rated and all the companies whose products are repres ented 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. P roduct 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 int o multiple languages for reference. Only the English version o f 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 dev ices 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 perfor m when properly used in accordance with instructions for u se provided in the labeling can be reasonably expected to result in signi ficant 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 lif e 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-criti cal, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incor porated. Further, Customers must fully indemnify Diodes Incorp orated 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 © 2015, Diodes Incorporated www.diodes.com Dimensions Value(in mm) C 1.270 X 0.802 X1 3.502 X2 4.612 Y 1.505 Y1 2.613 Y2 6.500 C X Y