RT8465ZS LED Driver IC Equivalent & Substitute Parts

Part Overview

The RT8465ZS is an AC DC offline switcher LED driver IC manufactured by Richtek USA Inc., designed for step-up (boost) topology applications. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The RT8465ZS operates across a supply voltage range of 8V to 32V with a switching frequency of 220kHz, housed in an 8-SOP surface mount package. Identifying compatible alternatives ensures design flexibility and supply chain resilience.

Key Parameters

Parameter	RT8465ZS Value
Manufacturer	Richtek USA Inc.
Category	Power Management (PMIC)
Type	AC DC Offline Switcher
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage - Supply (Min)	8V
Voltage - Supply (Max)	32V
Frequency	220kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the RT8465ZS is determined by the following critical parameters: AC DC offline switcher topology, step-up (boost) converter function, single output configuration, and 8-pin SOIC package compatibility. The supply voltage range (8V to 32V) and switching frequency (220kHz) define the operational envelope for equivalent parts.

Substitute parts are grouped into two categories:

Category A - Direct Topology Match (Step-Up/Boost Only): AL6562AS-13 operates as a step-up (boost) offline switcher with compatible package and single output, though with a narrower supply voltage range (10.3V to 22V).

Category B - Extended Topology (Buck/Boost Dual Topology): AL9910SP-13 and MP4068GN support both step-down (buck) and step-up (boost) topologies, providing broader application flexibility. These parts accommodate wider supply voltage ranges and multiple dimming options.

Category C - Alternative Topologies (Buck or Flyback): HV9801ANG-G (step-down/buck topology, 16-SOIC package), LYT2003D-TL (flyback topology with internal switch), and MP4001DS-LF (step-down/buck topology) represent alternative converter architectures. These are suitable only when application requirements permit topology deviation.

Parameter Comparison

Parameter	RT8465ZS	AL6562AS-13	AL9910SP-13	HV9801ANG-G	LYT2003D-TL	MP4001DS-LF	MP4068GN
Manufacturer	Richtek USA Inc.	Diodes Incorporated	Diodes Incorporated	Microchip Technology	Power Integrations	Monolithic Power Systems Inc.	Monolithic Power Systems Inc.
Type	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	Offline Converter	AC DC Offline Switcher	AC DC Offline Switcher
Topology	Step-Up (Boost)	Step-Up (Boost)	Step-Down (Buck), Step-Up (Boost)	Step-Down (Buck)	Flyback	Step-Down (Buck)	Step-Down (Buck), Step-Up (Boost)
Number of Outputs	1	1	1	1	1	1	1
Voltage - Supply (Min)	8V	10.3V	15V	15V	-	12V	4.1V
Voltage - Supply (Max)	32V	22V	500V	450V	-	450V	5V
Frequency	220kHz	-	25kHz ~ 300kHz	1.2kHz	85kHz	110kHz	22kHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 150°C (TJ)	-40°C ~ 105°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 150°C (TJ)	-40°C ~ 125°C (TJ)	-
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width) Exposed Pad	16-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width), 7 Leads	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Step-Up Topology Requirement):

AL6562AS-13 is the primary substitute when step-up (boost) topology is mandatory. This part maintains the same functional topology and 8-SOIC package footprint. However, the supply voltage range is narrower (10.3V to 22V) compared to the RT8465ZS (8V to 32V). Verify that your application's input voltage falls within the AL6562AS-13 operating range. AL6562AS-13 is active and ROHS3 compliant with superior temperature rating (-40°C to 150°C).

For Extended Flexibility (Buck/Boost Dual Topology):

AL9910SP-13 and MP4068GN support both step-down and step-up topologies, enabling broader design flexibility. AL9910SP-13 accommodates a wide supply voltage range (15V to 500V) with adjustable switching frequency (25kHz to 300kHz) and multiple dimming options (analog and PWM). MP4068GN operates at lower supply voltages (4.1V to 5V) with triac dimming capability. Both are active, ROHS3 compliant, and available in 8-SOIC packages with exposed pads.

For Alternative Topologies:

HV9801ANG-G (step-down/buck, 16-SOIC package), LYT2003D-TL (flyback with internal switch), and MP4001DS-LF (step-down/buck) are suitable only when application requirements permit topology deviation from the original step-up design. These alternatives offer different operational characteristics and should be selected only after confirming circuit compatibility.

All substitute parts are active products with current manufacturing support and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can AL6562AS-13 directly replace RT8465ZS in all applications?

A: AL6562AS-13 is the closest functional equivalent, maintaining step-up (boost) topology and 8-SOIC package compatibility. However, verify that your input voltage range (8V to 32V for RT8465ZS) falls within AL6562AS-13's operating range (10.3V to 22V). If your application requires input voltages below 10.3V or above 22V, AL6562AS-13 is not suitable.

Q: What is the difference between step-up (boost) and step-down (buck) topologies?

A: Step-up (boost) converters increase input voltage to produce higher output voltage, while step-down (buck) converters reduce input voltage to produce lower output voltage. The RT8465ZS uses step-up topology. Substitutes using step-down topology (HV9801ANG-G, MP4001DS-LF) require different circuit design and are not pin-compatible replacements.

Q: Why does HV9801ANG-G use a 16-SOIC package instead of 8-SOIC?

A: HV9801ANG-G is a step-down (buck) topology device with additional control features requiring more pins. The 16-SOIC package cannot be directly substituted into an 8-SOIC footprint without PCB redesign.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are either ROHS3 compliant or RoHS compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the significance of the exposed pad in AL9910SP-13 and MP4068GN?

A: The exposed pad provides improved thermal dissipation by connecting to a ground plane on the PCB. This is beneficial for applications requiring higher power handling or thermal management, though it requires PCB design modifications compared to standard 8-SOIC packages.

Q: Can I use LYT2003D-TL as a substitute for RT8465ZS?

A: LYT2003D-TL uses flyback topology with an internal switch, fundamentally different from the RT8465ZS step-up topology. This part is suitable only for isolated power supply designs and requires complete circuit redesign. It is not a direct substitute.

Q: Which substitute offers the widest supply voltage range?

A: AL9910SP-13 supports the widest supply voltage range (15V to 500V), making it suitable for high-voltage applications. However, verify that your circuit design can accommodate this extended range and the dual buck/boost topology.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message