AP8802SG-13 LED Driver IC Equivalent & Substitute Parts

Part Overview

The AP8802SG-13 is a LED Driver IC manufactured by Diodes Incorporated, designed as a 1-output DC-DC regulator with step-down (buck) topology. It features PWM and analog dimming capabilities with a 1A switch current rating and operates across an 8V to 48V supply range. The device is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production continuity. The AP8802SG-13 is housed in an 8-SOP package and is ROHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP8802SG-13
Manufacturer	Diodes Incorporated
Product Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Number of Outputs	1
Voltage Supply Range	8V to 48V
Current Output / Channel	1A (Switch)
Switching Frequency	700kHz
Dimming Capability	Analog, PWM
Operating Temperature	-40°C to 105°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution of the AP8802SG-13 is determined by the following critical parameters:

Topology: Step-down (buck) configuration required for direct functional replacement
Output Configuration: Single output only
Dimming Support: Analog and/or PWM dimming capability
Supply Voltage Range: Minimum 8V input capability; maximum 48V or higher
Output Current: 1A or greater switch current rating
Package Compatibility: 8-pin surface mount packages (8-SOIC, 8-SO-EP, 8-SOIC-EP, 8-HVSSOP, 8-VSSOP acceptable)
Compliance: ROHS3 compliant; unlimited or 168-hour MSL acceptable
Temperature Range: -40°C minimum and 105°C or higher maximum

Substitute parts are grouped into two categories: Primary Equivalents (direct replacements with matching or superior specifications) and Functional Alternatives (parts with different topologies or current ratings suitable for specific applications).

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Voltage (Min-Max)	Output Current	Frequency	Dimming	Package	Operating Temp	Product Status
AP8802SG-13	Diodes Inc.	Step-Down (Buck)	8V - 48V	1A	700kHz	Analog, PWM	8-SOP	-40°C to 105°C	Discontinued
AL8862SP-13	Diodes Inc.	Step-Down (Buck)	5V - 60V	1A	1MHz	Analog, PWM	8-SOIC-EP	-40°C to 105°C	Active
A6211GLJTR-T	Allegro MicroSystems	Step-Down (Buck)	6V - 48V	3A	-	PWM	8-SOIC-EP	-40°C to 105°C	Active
ILD6070XUMA1	Infineon Technologies	Step-Down (Buck)	4.5V - 60V	700mA	1MHz	Analog, PWM	8-SOIC-EP	-40°C to 150°C	Obsolete
LM3402HVMMX/NOPB	Texas Instruments	Step-Down (Buck)	6V - 75V	500mA	1MHz	PWM	8-VSSOP	-40°C to 125°C	Active
LM3405AXMKE/NOPB	Texas Instruments	Step-Down (Buck)	3V - 22V	1A	1.6MHz	PWM	TSOT-23-6	-40°C to 125°C	Active
LM3407MYX/NOPB	Texas Instruments	Step-Down (Buck)	4.5V - 30V	350mA	300kHz - 1MHz	PWM	8-HVSSOP	-40°C to 125°C	Active
LT3465AES6#TRPBF	Analog Devices Inc.	Step-Up (Boost)	2.7V - 16V	225mA	2.4MHz	PWM	TSOT-23-6	-40°C to 85°C	Active
LT3477EUF#TRPBF	Analog Devices Inc.	Flyback, SEPIC, Buck, Boost	2.5V - 25V	3A	200kHz - 4.6MHz	PWM	20-QFN (4x4)	-40°C to 85°C	Active
LT3954EUHE#PBF	Analog Devices Inc.	Flyback, SEPIC, Buck, Boost	4.5V - 40V	5A	100kHz - 1MHz	Analog, PWM	36-QFN (5x6)	-40°C to 125°C	Active
LT3956IUHE#TRPBF	Analog Devices Inc.	Flyback, SEPIC, Buck, Boost	4.5V - 80V	3.3A	100kHz - 1MHz	Analog, PWM	36-QFN (5x6)	-40°C to 125°C	Active

Engineering Selection Recommendations

Primary Equivalent (Recommended First Choice):

AL8862SP-13 from Diodes Incorporated is the primary equivalent. It maintains the same manufacturer, identical package footprint (8-SOIC with exposed pad), matching operating temperature range, and equivalent dimming capabilities. The AL8862SP-13 extends the maximum supply voltage to 60V and increases switching frequency to 1MHz. Product status is active with high inventory availability (60,200 pcs), ensuring long-term supply continuity. ROHS3 compliance and unlimited MSL rating match the original specification.

Secondary Equivalents (Pin-Compatible Alternatives):

A6211GLJTR-T (Allegro MicroSystems) provides higher output current (3A) in an 8-SOIC-EP package with matching temperature range and active product status. Suitable for applications requiring increased current capacity while maintaining 8-pin compatibility.

LM3407MYX/NOPB (Texas Instruments) operates within the 4.5V to 30V range with 350mA output current in an 8-HVSSOP package. Active product status and extended temperature range (-40°C to 125°C) support long-term availability.

Functional Alternatives (Different Topologies):

LT3954EUHE#PBF and LT3956IUHE#TRPBF from Analog Devices provide multi-topology support (buck, boost, flyback, SEPIC) with higher current ratings (5A and 3.3A respectively) and extended voltage ranges. These are suitable for designs requiring topology flexibility beyond step-down operation. Both are active products with ROHS3 compliance.

All recommended substitutes maintain ROHS3 compliance and are active products except ILD6070XUMA1, which is obsolete and should be avoided for new designs.

Frequently Asked Questions (FAQ)

Q: Can AL8862SP-13 directly replace AP8802SG-13 without PCB modifications?

A: Yes. AL8862SP-13 maintains identical 8-SOIC pinout and package dimensions (0.154" width, 3.90mm). No PCB layout changes are required. The exposed pad variant (8-SOIC-EP) provides improved thermal performance compared to the original 8-SOP package.

Q: What is the key difference between AL8862SP-13 and AP8802SG-13?

A: AL8862SP-13 extends maximum supply voltage from 48V to 60V, increases switching frequency from 700kHz to 1MHz, and is currently in active production. Both support analog and PWM dimming with 1A output current and identical operating temperature range.

Q: Why is A6211GLJTR-T listed as a substitute if it has 3A output current instead of 1A?

A: A6211GLJTR-T is a functional alternative for applications where higher current capacity is beneficial. The 3A rating does not prevent operation at 1A; the device simply provides additional headroom. Pin compatibility (8-SOIC-EP) and matching temperature range enable direct substitution in existing designs.

Q: Can LM3407MYX/NOPB replace AP8802SG-13 in all applications?

A: LM3407MYX/NOPB is suitable for applications operating within its 4.5V to 30V supply range. The AP8802SG-13 supports up to 48V input; therefore, LM3407MYX/NOPB is not appropriate for designs requiring the full 8V to 48V range. Output current is also reduced to 350mA.

Q: Are LT3954EUHE#PBF and LT3956IUHE#TRPBF suitable for direct replacement?

A: These parts are functional alternatives, not direct replacements. They employ multi-topology architecture (buck, boost, flyback, SEPIC) versus the fixed step-down topology of AP8802SG-13. Package size differs (36-QFN versus 8-SOP), requiring PCB redesign. Use these only when topology flexibility and higher current capacity justify redesign effort.

Q: What is the significance of the exposed pad (EP) variant in AL8862SP-13?

A: The exposed pad improves thermal dissipation by providing direct connection to the PCB ground plane. This enhances heat transfer during high-current operation, reducing junction temperature and improving reliability compared to non-exposed-pad packages.

Q: Is ILD6070XUMA1 recommended as a substitute?

A: No. ILD6070XUMA1 is obsolete and should not be selected for new designs. Although it meets electrical specifications, obsolete status creates supply chain risk. AL8862SP-13 or A6211GLJTR-T are preferred active alternatives.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All recommended substitute parts listed are ROHS3 compliant. Compliance status is verified in the parameter comparison table.

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