AP3041

AP3041

Document overview

• Manufacturer or author: Diodes Incorporated
• PDF pages: 14

Technical content

Features

• Input Voltage Range: 5V to 27V
• 1A Peak and 10V MOSFET Gate Driver
• 20ns Quick MOSFET Gate Driver
• Duty Cycle Limit of 90%
• Programmable UVLO
• PWM Dimming Control
• Programmable Overvoltage Protection
• LED Open Protection
• LED Short-Circuit Protection
• Diode Short-Circuit Protection
• Output Short-Circuit Protection
• LED Low-Side Short to Ground Detection
• OV Pin Undervoltage Protection
• Overcurrent Protection
• Programmable Slope Compensation
• Adjustable Soft-Start
• Adjustable Protection Delay
• Fault Status Indication
• Adjustable Operation Frequency from 100kHz to 1MHz
• Overtemperature Protection
• 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-Q100/101/104/200, 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) CT OV UVLO EN VIN VCC OUT GND FLAG PWM FB SS/COMP SC CS RT FAULT SOIC-16

Applications

• LED lighting
• LED TVs
• LCD display modules 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. THE AP3041 IS NOT RECOMMENDED FOR NEW DESIGNS. PLEASE USE THE AL8853.

Document number: DS41887 Rev. 3 - 3 2 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Typical Applications Circuit OUT CS OV VIN UVLO RT CT SS/COMP EN FB GND VCC System Power Supply SC FLAGAP3041 OFF ON PWM FAULT PWM CIN R2 CV 5V to 27V RT CT RC CSS RSS CSC COUT D1L CVIN To AC-DC Protection

Document number: DS41887 Rev. 3 - 3 3 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Pin Descriptions Pin Number Pin Name Function

1 CT Capacitor Setting Shutdown Delay Time

2 OV Over Output Voltage Protection Pin

3 UVLO Two resistors connected from this pin to GND and the power supply respectively is used to

set startup and shutdown level.

4 EN Enable Pin

5 VIN Input Supply Pin. This pin must be locally bypassed. 6 VCC This pin should be bypassed to GND with a ceramic capacitor.

7 OUT Connect this pin to the gate of external MOSFET, the gate driver has 1A peak current

capability.

8 GND Ground

9 FAULT

This pin can be used to drive the external MOSFET. The logic of the driver signal is controlled by that of PWM pin and the signal phase of them is the same. This pin is pulled to ground under fault condition of OVP, UVLO, OTP, diode short circuit and LED short circuit. 10 RT An external resistor connected from this pin to GND is used to set the operating frequency. 11 CS Sense switch current pin, which is used for current mode control and for current limit. The current limit voltage is 500mV. 12 SC Slope compensation for current sense. A resistor between SC and GND will program the slope compensation.

13 SS/COMP

An external soft-start time capacitor is placed from this pin to GND and is charged by an internal 20μA current source to control regulator soft-start time. Compensation pin. This pin is the output of the internal error amplifier. 14 FB Voltage Feedback Pin. The reference voltage is 500mV.

15 PWM This pin can be connected to current matched chip and receives error signal used to shut

down the system. 16 FLAG Fault Condition Output Pin. When the output is in short-circuit condition, the FLAG outputs logic low to shut down the power path. Please refer to the application circuit.

Document number: DS41887 Rev. 3 - 3 4 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Functional Block Diagram CT OV UVLO EN VIN VCC OUT GND FLAG FB SS/COMP SC CS RT GND BANDGAP 1.25V EN REFERENCE 3V 300mV 1.25V 10mA 10mA2.25V OVP FAULT OTSD OSC CLK SAW OVP 300mV 1.25V SCP EA PWM SAW 1.75V LEB OCP 500mV CLK R S Q DRIVE LOGIC PWM FAULT

Document number: DS41887 Rev. 3 - 3 5 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Absolute Maximum Ratings (Note 4) Symbol Parameter Value Unit VIN Input Voltage 30 V VCC VCC Pin Voltage 20 V VOUT OUT Pin Voltage 20 V VFAULT FAULT Pin Voltage 20 V VFB FB Pin Voltage 20 V VUVLO UVLO Pin Voltage 7 V VCS CS Pin Voltage 20 V VSC SC Pin Voltage 7 V VFLAG FLAG Pin Voltage 7 V VSS/COMP SS/COMP Pin Voltage 7 V VRT RT Pin Voltage 7 V VPWM PWM Pin Voltage 7 V VEN EN Pin Voltage 30 V VOV OV Pin Voltage 7 V θJA Thermal Resistance (Junction to Ambient, No Heatsink, Free Air) 82 ºC/W TJ Operating Junction Temperature +150 ºC TSTG Storage Temperature -65 to +150 ºC TLEAD Lead Temperature (Soldering, 10s) +260 ºC — ESD (Human Body Model) 2000 V — ESD (Machine Model) 200 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. Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input Voltage 5 27 V f Operating Frequency 0.1 1 MHz TJ Operating Temperature Range -40 +85 ºC

Document number: DS41887 Rev. 3 - 3 6 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Electrical Characteristics (VCC = 12V, VEN = 3.3V, TA = +25ºC, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit VIN Input Voltage — 5 — 27 V VFB Feedback Voltage — 490 500 510 mV ICC Supply Current VFB = VIN, No Switching — 1.5 5 mA IQ Shutdown Supply Current VEN = 0 — 1 2 μA VCC VCC Pin Voltage 11V ≤ VIN ≤ 27V 9.5 10.0 10.5 V 5V ≤ VIN ≤ 10V, ICC = 5mA VIN-0.5 — — V ICC-LIM VCC Pin Current Limit — — 35 — mA VCC-HI VCC Pin UVLO Rising Threshold — — 4.7 — V VCC-HYS VCC Pin UVLO Falling Hysteresis — — 300 — mV fOSC Oscillator Frequency — 0.1 — 1 MHz VSC_PK SC Peak Voltage — 530 — 680 mV VUVLO UVLO Threshold — 1.20 1.25 1.30 V IUVLO-HYS UVLO Hysteresis Current Source — — 10 — μA VCS Current Limit Threshold Voltage — 0.48 0.5 0.52 V VRT RT Voltage — 1.20 1.25 1.30 V GV Error Amplifier Voltage Gain — — 680 — V /V GS Error Amplifier Transconductance — — 500 — μA/V VEH EN Pin Threshold Voltage — 2.5 — — V VEL — — — 0.5 VIH PWM Pin Threshold Voltage — 2.5 — — V VIL — — — 0.5 VOV OV Threshold — — 2.25 — V IOV-HYS OV Hysteresis Current Source — — 10 — μA VFB_LOW LED- Short to GND Detection Level — — 0.3 — V VFB_HIGH LED+ Short to LED-Detection Level — — 1.25 — V VOV_LOW LED+ Short to GND Detection Level — — 0.3 — V VCS_HIGH Diode Short Detection Level — — 1.75 — V ICT CT Current Source — — 5 — μA VCT CT Threshold Voltage — — 2.6 — V

Document number: DS41887 Rev. 3 - 3 7 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Electrical Characteristics (VCC = 12V, VEN = 3.3V, TA = +25ºC, unless otherwise specified.) (continued) Symbol Parameter Conditions Min Typ Max Unit DMAX Maximum Duty Cycle f = 200kHz 80 90 — % ISS Soft-Start Current Source — 16 22 28 μA tRISE OUT Pin Rising Time COUT = 1nF — 20 — ns tFALL OUT Pin Falling Time COUT = 1nF — 20 — VOUT-H OUT High Voltage Level (VCC-VOUT) IOUT = 50mA — 0.25 0.75 V VOUT-L OUT Low Voltage Level (VOUT) IOUT = 50mA — 0.25 0.75 V tRISE FAULT Pin Rising Time CFAULT = 1nF — 100 — ns tFALL FAULT Pin Falling Time CFAULT = 1nF — 100 — VFAULT_H FAULT High Voltage Level (VCC-VFAULT) IFAULT = 10mA — 0.25 0.75 V VFAULT_L FAULT Low Voltage Level IFAULT = 10mA — 0.25 0.75 V tD FAULT Minimum Pulse Width Oscillator Frequency = 200kHz — 20 — μs VFLAG-H FLAG High Voltage Level IFLAG = 500μA — 2 — V VFLAG-L FLAG Low Voltage Level IFLAG = 500μA — 0.25 0.75 V TOTSD Thermal Shutdown Temperature — — +160 — ºC THYS Thermal Shutdown Hysteresis — — +20 — ºC

Document number: DS41887 Rev. 3 - 3 8 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 0 20 40 60 80 100 100 120 140 LED Current (mA) PWM Duty (%) VIN=12V, VPWM=5V fPWM=70Hz fPWM=200Hz fPWM=500Hz fPWM=1kHz fPWM=2kHz 0 40 80 120 160 200 240 280 320 100 200 300 400 500 600 700 800 900 1000 Frequency (kHz) RT (k) VIN=12V -50 -25 0 25 50 75 100 125 150 0.46 0.48 0.50 0.52 0.54 VFB (V) Temperature ( o VIN=12V -75 -50 -25 0 25 50 75 100 125 150 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Supply Current (mA) Temperature ( O VIN=12V VIN=24V -40 0 40 80 120 160 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Shutdown Current (mA) Temperature ( O VPWM=0V VIN=12V VIN=24V -75 -50 -25 0 25 50 75 100 125 150 300 320 340 360 380 400 Frequency (kHz) Temperature ( O RT=82k Performance Characteristics LED Current vs. PWM Duty Frequency vs. RT VFB vs. Temperature Supply Current vs. Temperature Supply Current vs. Temperature Frequency vs. Temperature

Document number: DS41887 Rev. 3 - 3 9 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 -75 -50 -25 0 25 50 75 100 125 150 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CS Threshold Voltage (V) Temperature ( O VIN=12V -75 -50 -25 0 25 50 75 100 125 150 1.0 1.2 1.4 1.6 1.8 2.0PWM Threshold Voltage (V) Temperature ( O Rising Falling -75 -50 -25 0 25 50 75 100 125 150 1.0 1.2 1.4 1.6 1.8 2.0 EN Threshold Voltage (V) Temperature ( O VIN=12V Rising Falling -75 -50 -25 0 25 50 75 100 125 150 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 OV Thershold Voltage (V) Temperature ( O VIN=12V -75 -50 -25 0 25 50 75 100 125 150 0.26 0.28 0.30 0.32 0.34 0.36 FB Low Threshold Voltage (V) Temperature ( O VIN=12V Performance Characteristics (continued) VCC vs. Input Voltage CS Threshold Voltage vs. Temperature EN Threshold Voltage vs. Temperature PWM Threshold Voltage vs. Temperature OV Threshold Voltage vs. Temperature FB Low Threshold Voltage vs. Temperature 5 10 15 20 25 30 VCC (V) Input Voltage (V) TA=25 O C

Document number: DS41887 Rev. 3 - 3 10 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 -75 -50 -25 0 25 50 75 100 125 150 1.150 1.175 1.200 1.225 1.250 1.275 1.300 1.325 1.350 FB High Threshold Voltage (V) Temperature ( O VIN=12V -75 -50 -25 0 25 50 75 100 125 150 0.20 0.24 0.28 0.32 0.36 0.40 OV Low Threshold Voltage (V) Temperature ( O VIN=12V -40 0 40 80 120 160 Soft-start Current (mA) Temperature ( O VIN=12V VIN=24V -40 0 40 80 120 160 4.0 4.4 4.8 5.2 5.6 6.0 6.4 6.8 CT Charge Current (mA) Temperature ( O VIN=12V VIN=24V Performance Characteristics (continued) FB High Threshold Voltage vs. Temperature OV Low Threshold Voltage vs. Temperature Soft-Start Current vs. Temperature CT Charge Current vs. Temperature

Document number: DS41887 Rev. 3 - 3 11 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Ordering Information (Note 5) AP3041 X X - X PackingPackageProduct Name TR : Tape & ReelM : SOIC-16 RoHS/Green G1 : RoHS Compliant and Green Orderable Part Number Package Temperature Range Marking ID Packing Qty. Carrier AP3041MTR-G1 SOIC-16 -40 to +85C AP3041M-G1 4,000 13” Tape & Reel Note: 5. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes -packaging/. Marking Information ( Top View ) AP3041M-G1 YY WW X X Logo Marking ID WW : Week : 01 to 52; 52 YY : Year (ex: 26 = 2026) X X : Internal Code represents week 52 and 53 16 9

Document number: DS41887 Rev. 3 - 3 12 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Package Outline Dimensions (All dimensions in mm(inch).) Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: SOIC-16 5.800(0.228) 6.240(0.246) 0.310(0.012) 0.510(0.020) 20:1 A 0 ° 8 ° B C S 1.000(0.039) 0.200(0.008) 20:1 B C 50:1 C-C 0.400(0.016) 1.270(0.050) 1.270(0.050) BSC Depth 0.200(0.008) R 0.200(0.008) R 0.200(0.008) A 3.800(0.150) 4.040(0.159) 3 ° 8 ° 7 ° Note: Eject hole, oriented hole and mold mark is optional . φ D 0.150(0.006) 0.070(0.003) 0.070(0.003) Symbol D D1 min(mm) max(mm) max(mm)min(mm)min(inch) min(inch)max(inch) max(inch) Option1 Option2 1.350 1.750 1.260 0.069 - 0.050 1.650 1.250 1.020 0.049 0.040 0.065 0.053

Document number: DS41887 Rev. 3 - 3 13 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: SOIC-16 Z X E Y G Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch)

Document number: DS41887 Rev. 3 - 3 14 of 14 www.diodes.com April 2026 © 2026 Copyright Diodes Incorporated. All Rights Reserved. AP3041 IMPORTANT NOTICE 1. DIODES INCORPORATED (Diodes) AND ITS SUBSIDIARIES MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICUL AR 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. Diodes’ products may be used to facilitate safety-related applications; however, in all instances customers and users are responsible for (a) selecting the appropriate Diodes products for their applications, (b) evaluating the suitability of Diodes’ products for their intended applications, (c) ensuring their applications, which inco rporate Diodes’ products, comply the applicable legal and regulatory requirements as well as safety and functional - safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality co ntrol techniques , redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their applications. 3. Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities associated with such use, and will hold Diodes and all companies whose products are represented herein or on Diodes’ websites, harmless against all damages and liabilities. 4. Products described herein may be covered by one or more United States, international or foreign patents and pending patent applications. Product names and markings noted herein may also be covered by one or more United States, international or foreign trad emarks and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties (including third parties whose products and services may be described in this document or on Diodes’ website) under this document. 5. Diodes’ products are provided subject to Diodes’ Standard Terms and Conditions of Sale (https://www.diodes.com/about/company/terms-and-conditions/terms-and-conditions-of-sales/) or other applicable terms. This document does not alter or expand the applicable warranties provided by Diodes. Diodes does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. 6. Diodes’ products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sa le is prohibited under any applicable laws and regulations. Should customers or users use Diodes’ products in contravention of any applicable laws or regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any da mages, losses or penalties arising in connection therewith or as a result thereof, and (b) indemnify and hold D iodes and its representatives and agents harmless against any and all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim relating to any noncompliance with the applicable laws and regulations, as well as any unintended or unauthorized application. 7. While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may c ontain technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this docu ment is error-free and Diodes is under no obligation to update or otherwise correct this information. Notwithstanding the foregoing, Diodes reserves the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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. 8. Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion her eof) is prohibited. Diodes assumes no responsibility for any losses incurred by the customers or users or any third parties arising from any such unauthorized use. 9. This Notice may be periodically updated with the most recent version available at https://www.diodes.com/about/company/terms-and- conditions/important-notice The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries. All other trademarks are the property of their respective owners. © 2026 Diodes Incorporated. All Rights Reserved. www.diodes.com