AL5802LP4-7 LED Driver IC Equivalent & Substitute Parts

Part Overview

The AL5802LP4-7 is a linear PWM LED driver IC manufactured by Diodes Incorporated, designed for single-output LED applications with 100mA output capability. This device operates across a 4.5V to 30V supply range and is housed in a 6-XFDFN exposed pad package. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting the electrical and mechanical constraints of the original application.

Key Parameters

Parameter	AL5802LP4-7 Specification
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Type	Linear LED Driver
Number of Outputs	1
Voltage - Supply (Min)	4.5V
Voltage - Supply (Max)	30V
Voltage - Output	30V
Current - Output / Channel	100mA
Dimming	PWM
Internal Switch(s)	Yes
Package / Case	6-XFDFN Exposed Pad
Operating Temperature	-40°C ~ 125°C (TA)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the AL5802LP4-7 are selected based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Single output configuration (Number of Outputs = 1)
Linear topology with internal switching capability
PWM dimming capability
Output current rating at or above 100mA
Supply voltage range compatibility (minimum 4.5V, maximum at or above 30V)
Surface mount packaging with exposed pad thermal management
ROHS3 compliance and MSL rating of 1 or 2

Secondary Considerations:

Operating temperature range (-40°C minimum, 125°C or higher maximum)
Package form factor compatibility with PCB layout constraints
Product status (active or last-time-buy preferred over obsolete)

Substitutes are grouped by output current capability and supply voltage range to facilitate selection based on specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Output Current	Supply Voltage (Min)	Supply Voltage (Max)	Output Voltage	Dimming	Package	Product Status
AL5802LP4-7	Diodes Incorporated	100mA	4.5V	30V	30V	PWM	6-XFDFN Exposed Pad	Obsolete
BCR420UE6327HTSA1	Infineon Technologies	200mA	—	40V	40V	PWM	SC-74, SOT-457	Active
BCR420UE6433HTMA1	Infineon Technologies	65mA	—	40V	40V	—	SC-74, SOT-457	Active
BCR450E6327HTSA1	Infineon Technologies	85mA	8V	27V	6V	PWM	SC-74, SOT-457	Last Time Buy
CL6K4-G	Microchip Technology	100mA	6.5V	90V	4V ~ 90V	PWM	TO-252-3, DPAK	Active
MAX16815ATT+T	Analog Devices Inc./Maxim Integrated	100mA	6.5V	40V	39.6V	PWM	6-WDFN Exposed Pad	Active
MAX16836ASA+	Analog Devices Inc./Maxim Integrated	350mA	6.5V	40V	39.45V	PWM	8-SOIC-EP	Active
MIC4802YME-TR	Microchip Technology	800mA	3V	5.5V	—	PWM	8-SOIC-EP	Active
NCR402UX	Nexperia USA Inc.	20mA	—	40V	38V	—	SC-74, SOT-457	Active
STCS1APUR	STMicroelectronics	1.5A	4.5V	40V	—	PWM	8-VFDFN Exposed Pad	Active
STCS1PUR	STMicroelectronics	1.5A	4.5V	40V	—	PWM	8-VFDFN Exposed Pad	Active

Engineering Selection Recommendations

Direct Equivalents (100mA Output Current, PWM Dimming):

MAX16815ATT+T and CL6K4-G both provide 100mA output current with PWM dimming capability. MAX16815ATT+T maintains the 6-pin DFN package form factor similar to the original AL5802LP4-7, with supply voltage range of 6.5V to 40V and active product status. CL6K4-G offers extended supply voltage range (6.5V to 90V) in a TO-252 DPAK package, suitable for applications requiring higher input voltage tolerance.

Higher Current Alternatives:

BCR420UE6327HTSA1 (200mA), MAX16836ASA+ (350mA), STCS1APUR, and STCS1PUR (1.5A each) provide increased output current capability for applications requiring higher LED drive current. These parts maintain PWM dimming functionality and active product status. STCS1APUR and STCS1PUR are functionally identical with matching supply voltage range (4.5V to 40V) and 8-DFN package.

Lower Current Alternatives:

BCR420UE6433HTMA1 (65mA) and NCR402UX (20mA) are suitable only for applications with reduced current requirements. BCR420UE6433HTMA1 lacks specified dimming capability. NCR402UX provides automotive-grade qualification (AEC-Q101) with extended operating temperature range (-55°C to 150°C).

Supply Voltage Considerations:

MIC4802YME-TR operates at 3V to 5.5V supply range, making it unsuitable for the AL5802LP4-7 application requiring 4.5V minimum to 30V maximum. BCR450E6327HTSA1 operates at 8V to 27V, which does not fully cover the original 4.5V minimum specification.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance. Infineon BCR420 series and Nexperia NCR402UX carry automotive-grade qualification (AEC-Q101). Moisture sensitivity levels are MSL 1 (unlimited) for most parts, with MIC4802YME-TR rated MSL 2 (1 year).

Frequently Asked Questions (FAQ)

Q: Can BCR420UE6327HTSA1 directly replace AL5802LP4-7?

A: BCR420UE6327HTSA1 provides higher output current (200mA vs. 100mA) and extended maximum supply voltage (40V vs. 30V), making it functionally compatible for applications not requiring the full 4.5V minimum input. However, the supply voltage minimum is not specified, requiring verification against your specific circuit requirements.

Q: What is the difference between STCS1APUR and STCS1PUR?

A: Both parts are functionally identical linear PWM LED drivers with 1.5A output current, 4.5V to 40V supply range, and 8-DFN package. Selection between them depends on packaging preference (cut tape vs. reel) and inventory availability.

Q: Is MAX16815ATT+T a pin-compatible replacement?

A: MAX16815ATT+T uses a 6-WDFN exposed pad package, which differs from the AL5802LP4-7 6-XFDFN package. While both are 6-pin DFN variants, PCB layout modifications may be required. Pin function compatibility must be verified against the respective datasheets.

Q: Can MIC4802YME-TR replace AL5802LP4-7?

A: MIC4802YME-TR is not suitable as a direct replacement. Its supply voltage range (3V to 5.5V) does not accommodate the original 4.5V to 30V specification. This part is designed for low-voltage applications only.

Q: Which substitute offers the best thermal performance?

A: MAX16836ASA+ and STCS1APUR/STCS1PUR feature 8-pin packages with exposed pads, providing enhanced thermal dissipation compared to 6-pin alternatives. Selection depends on output current requirements and PCB thermal design constraints.

Q: Are automotive-qualified alternatives available?

A: Yes. BCR420UE6327HTSA1, BCR420UE6433HTMA1, and NCR402UX carry AEC-Q101 automotive qualification. These parts are suitable for automotive lighting and signage applications requiring industry certification.

Q: What package considerations apply when substituting?

A: The original AL5802LP4-7 uses 6-XFDFN. Substitutes employ SC-74 (SOT-457), TO-252 (DPAK), 6-WDFN, 8-SOIC, and 8-VFDFN packages. Each package has different footprint dimensions and thermal characteristics. PCB layout redesign may be necessary, particularly for thermal management in high-current applications.

Q: Can I use a higher-current part in a 100mA application?

A: Yes. Higher-current parts (200mA, 350mA, 1.5A) can operate at reduced current levels. However, verify that the minimum supply voltage, dimming capability, and package compatibility align with your circuit design before implementation.

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