AL8807AW5-7 LED Driver IC Equivalent & Substitute Parts

Part Overview

The AL8807AW5-7 is a LED Driver IC manufactured by Diodes Incorporated, classified as a Power Management (PMIC) device. This is a Step-Down (Buck) DC DC Regulator with 1A output capacity, designed for LED driver applications with analog dimming control. The device operates across a 6V to 36V supply range and delivers up to 40V output, packaged in SOT-25 (SC-74A, SOT-753).

The AL8807AW5-7 is currently marked as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this topology and performance class.

Key Parameters

Parameter	AL8807AW5-7
Manufacturer	Diodes Incorporated
Product Status	Obsolete
Type	DC DC Regulator
Topology	Step-Down (Buck)
Number of Outputs	1
Voltage - Supply (Min)	6V
Voltage - Supply (Max)	36V
Voltage - Output	40V
Current - Output / Channel	1A (Switch)
Frequency	700kHz
Dimming	Analog
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	SOT-25 (SC-74A, SOT-753)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AL8807AW5-7 is determined by the following critical parameters:

Topology: Step-Down (Buck) configuration with internal switch
Output Current: 1A or greater capacity
Supply Voltage Range: Minimum 6V input, maximum 36V or higher
Output Voltage: 40V or greater capability
Dimming Control: Analog or PWM dimming support
Operating Temperature: -40°C to 125°C or wider range
Package Type: Surface mount packages compatible with SOT-25 footprint or alternative compact packages
Compliance: ROHS3 compliant, MSL rating of 1 or 3

Substitute parts are grouped into two categories based on functional alignment:

Category A - Direct Functional Equivalents: Parts maintaining Step-Down (Buck) topology with 1A output capacity and compatible voltage specifications.

Category B - Enhanced Performance Alternatives: Parts with higher output current (1.5A to 4A), extended voltage ranges, or dual dimming modes (Analog + PWM) that provide design flexibility while maintaining core buck regulator functionality.

Parameter Comparison

Parameter	AL8807AW5-7	AL8860WT-7	LM3402HVMMX/NOPB	LM3402MM/NOPB	LM3405AXMKE/NOPB	LM3414MRX/NOPB	LED2001PHR	LED6000PHR
Manufacturer	Diodes Inc.	Diodes Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Topology	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)
Voltage - Supply (Min)	6V	4.5V	6V	6V	3V	4.5V	3V	4.5V
Voltage - Supply (Max)	36V	40V	75V	42V	22V	42V	18V	61V
Voltage - Output	40V	36V	73V	40V	-	-	-	-
Current - Output / Channel	1A	1A	500mA	500mA	1A	1A	4A	3A
Frequency	700kHz	1MHz	1MHz	1MHz	1.6MHz	500kHz	850kHz	250kHz ~ 1.5MHz
Dimming	Analog	Analog, PWM	PWM	PWM	PWM	Analog, PWM	PWM	PWM
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 105°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)
Package / Case	SOT-25	TSOT-23-5	8-VSSOP	8-VSSOP	TSOT-23-6	8-PowerSOIC	8-HSOP	16-HTSSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

Primary Recommendation - AL8860WT-7 (Diodes Incorporated)

The AL8860WT-7 is the manufacturer-recommended direct substitute. Both devices are from Diodes Incorporated and share identical Step-Down (Buck) topology with 1A output capacity. The AL8860WT-7 is Active status with extended supply voltage range (4.5V to 40V) and dual dimming modes (Analog + PWM). Operating temperature range is -40°C to 105°C, which is within acceptable limits for most applications. ROHS3 compliance and MSL-1 rating match the original specification. Package transition from SOT-25 to TSOT-23-5 requires PCB layout modification but maintains compact form factor.

Secondary Recommendations - Texas Instruments LM3402 Series

LM3402HVMMX/NOPB and LM3402MM/NOPB are Active status Step-Down regulators from Texas Instruments. Both support 1MHz switching frequency and PWM dimming. LM3402HVMMX/NOPB extends supply voltage to 75V with 73V output capability, suitable for high-voltage LED string applications. LM3402MM/NOPB maintains 42V maximum supply with 40V output, closer to original specifications. Both operate -40°C to 125°C and carry ROHS3 compliance with MSL-1 rating. Package is 8-VSSOP, requiring layout redesign.

Alternative - LM3414MRX/NOPB (Texas Instruments)

The LM3414MRX/NOPB provides dual dimming capability (Analog + PWM) matching the AL8807AW5-7 analog dimming requirement. Step-Down topology with 1A output, 4.5V to 42V supply range, and -40°C to 125°C operating temperature. Automotive grade qualification available. ROHS3 compliant with MSL-3 rating. 8-PowerSOIC package requires PCB redesign.

Higher Current Alternatives - LED2001PHR and LED6000PHR (STMicroelectronics)

For applications requiring increased output current, LED2001PHR (4A) and LED6000PHR (3A) provide enhanced performance. Both maintain Step-Down topology with PWM dimming and extended operating temperature to 150°C. LED6000PHR offers programmable frequency range (250kHz to 1.5MHz) for design flexibility. Both carry ROHS3 compliance. MSL-3 rating requires controlled storage conditions. Package changes to 8-HSOP and 16-HTSSOP respectively necessitate circuit board layout modifications.

Compliance Verification

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. MSL ratings of 1 or 3 are acceptable for standard manufacturing environments. Automotive-grade options (LM3406HVMH/NOPB, LM3414MRX/NOPB) are available for applications requiring AEC qualification.

Frequently Asked Questions (FAQ)

Q: Can AL8860WT-7 directly replace AL8807AW5-7 without circuit modification?

A: AL8860WT-7 maintains identical electrical specifications (1A output, Step-Down topology, 1MHz operation) but requires PCB layout changes due to package transition from SOT-25 to TSOT-23-5. Pin configuration differs; verify pinout compatibility before implementation.

Q: What is the difference between Analog and PWM dimming in these LED drivers?

A: Analog dimming adjusts LED brightness by varying the output voltage or current through a control pin. PWM dimming switches the output on and off at high frequency to control average brightness. AL8807AW5-7 uses Analog dimming; most substitutes support PWM or dual modes. Application circuit design must accommodate the selected dimming method.

Q: Why do some substitutes have lower output current (500mA) than the original 1A specification?

A: LM3402HVMMX/NOPB and LM3402MM/NOPB are rated for 500mA continuous output. These are listed as substitutes based on topology and voltage compatibility but are suitable only for applications requiring ≤500mA LED current. For 1A applications, select AL8860WT-7, LM3405AXMKE/NOPB, or LM3414MRX/NOPB.

Q: What does MSL-1 versus MSL-3 rating mean for component handling?

A: MSL-1 (Unlimited) indicates the component has no moisture sensitivity restrictions and can be stored indefinitely at room temperature. MSL-3 (168 Hours) requires controlled storage at ≤30°C and ≤60% relative humidity; components must be used within 168 hours of package opening. LED2001PHR and LED6000PHR carry MSL-3 ratings.

Q: Can I use LED2001PHR (4A) or LED6000PHR (3A) in place of AL8807AW5-7 (1A)?

A: Yes, higher current-rated devices can substitute for lower current applications. LED2001PHR and LED6000PHR provide design margin and are suitable for 1A LED driver circuits. However, package changes (8-HSOP and 16-HTSSOP respectively) require complete PCB redesign. Verify thermal management requirements for the selected package.

Q: Are there supply voltage compatibility concerns when switching from AL8807AW5-7 to substitutes?

A: AL8807AW5-7 operates 6V to 36V input. AL8860WT-7 extends minimum to 4.5V; LM3402HVMMX/NOPB extends maximum to 75V. Verify your application's actual supply voltage range falls within the substitute's specification. For supplies below 6V, use LM3405AXMKE/NOPB (3V minimum) or MCP1643-I/MC (0.5V minimum, Step-Up topology).

Q: What is the operating temperature difference between -40°C to 105°C (TA) and -40°C to 125°C (TJ)?

A: TA (Ambient Temperature) is measured at the device exterior; TJ (Junction Temperature) is measured at the silicon die. TJ specifications allow higher internal temperatures. AL8860WT-7 specifies TA -40°C to 105°C, while most Texas Instruments and STMicroelectronics substitutes specify TJ -40°C to 125°C or 150°C, indicating better thermal performance.

Q: Is package compatibility critical when selecting a substitute?

A: Yes. AL8807AW5-7 uses SOT-25 package; substitutes use TSOT-23-5, 8-VSSOP, TSOT-23-6, 8-PowerSOIC, 8-HSOP, or 16-HTSSOP packages. Each requires different PCB footprints, trace routing, and thermal management. Verify PCB design can accommodate the selected substitute's package before implementation.

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