PAM99700AC LED Driver IC Equivalent & Substitute Parts

Part Overview

The PAM99700AC is an AC DC Offline Switcher LED Driver IC manufactured by Diodes Incorporated, designed for single-output applications with PWM dimming capability. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The PAM99700AC operates across a wide supply voltage range of 12V to 500V and is packaged in an 8-SOP surface mount configuration suitable for backlight and signage applications.

Substiute Parts

PAM99700AC

Diodes IncorporatedIn Stock: 2658PAM99700AC Datasheet

Current PartRFQ

FLS0116MX

Fairchild SemiconductorIn Stock: 2204FLS0116MX Datasheet

MFR RecommendedRFQ

HV9910BLG-G

Microchip TechnologyIn Stock: 50212HV9910BLG-G Datasheet

MFR RecommendedRFQ

HV9910CSG-G

Microchip TechnologyIn Stock: 1457HV9910CSG-G Datasheet

MFR RecommendedRFQ

LM3445MX/NOPB

Texas InstrumentsIn Stock: 5179LM3445MX/NOPB Datasheet

MFR RecommendedRFQ

LM3497MMX/NOPB

Texas InstrumentsIn Stock: 3835LM3497MMX/NOPB Datasheet

MFR RecommendedRFQ

MP4088GN-Z

Monolithic Power Systems Inc.In Stock: 8324MP4088GN-Z Datasheet

MFR RecommendedRFQ

NCL30000DR2G

onsemiIn Stock: 31670NCL30000DR2G Datasheet

MFR RecommendedRFQ

TPS92210D

Texas InstrumentsIn Stock: 1328TPS92210D Datasheet

MFR RecommendedRFQ

TS19450CS RLG

Taiwan Semiconductor CorporationIn Stock: 1218TS19450CS RLG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PAM99700AC requires matching the following critical parameters:

Primary Substitution Criteria:

• Type: AC DC Offline Switcher (controller or integrated switch topology)
• Topology: Step-Down (Buck) configuration
• Number of Outputs: Single output
• Dimming Capability: PWM or compatible dimming method
• Package Compatibility: 8-SOIC or equivalent surface mount package
• Voltage Supply Range: Minimum 12V to 500V overlap or higher maximum rating
• Operating Temperature: -40°C minimum to 85°C minimum

Secondary Compatibility Factors:

• RoHS3 Compliance for regulatory alignment
• Moisture Sensitivity Level 1 or 2A for handling consistency
• Surface mount configuration for PCB assembly compatibility

The substitute parts listed below meet these criteria with varying topologies (AC DC Offline Switcher, DC DC Controller) and dimming methods (PWM, Analog, Triac) that provide functional equivalence for LED driver applications in backlight, lighting, and signage systems.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

HV9910BLG-G and HV9910CSG-G from Microchip Technology provide the closest functional match to PAM99700AC. Both are DC DC Controllers with Step-Down topology, support PWM dimming, and maintain the 8-SOIC package footprint. HV9910BLG-G extends the minimum supply voltage to 8V and maintains 450V maximum rating, while HV9910CSG-G specifies 15V minimum with exposed pad variant. Both are Active products with ROHS3 compliance and extended operating temperature to 125°C, providing improved reliability over the obsolete PAM99700AC.

Secondary Substitutes (Functional Equivalence with Design Considerations):

TS19450CS RLG from Taiwan Semiconductor Corporation matches the PAM99700AC topology and voltage range (8V to 450V) with PWM and Analog dimming support. This part is also obsolete but provides direct functional equivalence. For active production, this option is not recommended.

LM3445MX/NOPB and LM3497MMX/NOPB from Texas Instruments are AC DC Offline Switchers with Triac dimming capability. These parts operate at lower voltage ranges (8V to 12V) and are suitable for applications where supply voltage is constrained to this range. Both are Active products with ROHS3 compliance.

Limited Substitutes (Topology or Voltage Constraints):

MP4088GN-Z from Monolithic Power Systems operates at 4.5V to 5V, significantly below the PAM99700AC supply range, and is suitable only for applications redesigned for lower voltage operation.

NCL30000DR2G and TPS92210D from onsemi and Texas Instruments respectively use Flyback topology with Triac dimming and operate at 8.8V to 20V and 9V to 20V ranges. These are suitable for applications where Flyback topology is acceptable and supply voltage is limited to 20V maximum.

FLS0116MX from Fairchild Semiconductor is a MOSFET-integrated LED driver with Analog dimming only, limited to 20V maximum supply voltage, and uses a 7-SOIC package. This part is suitable only for low-voltage applications requiring Analog dimming.

Compliance and Certification:

All recommended Active substitutes maintain ROHS3 compliance and Moisture Sensitivity Level 1 or 2A, ensuring compatibility with standard PCB assembly and handling procedures. Operating temperature ranges extend to 125°C for all Active alternatives, providing improved thermal margin compared to the PAM99700AC specification of 85°C.

Frequently Asked Questions (FAQ)

Q: Can HV9910BLG-G directly replace PAM99700AC without PCB modifications?

A: HV9910BLG-G maintains the 8-SOIC package footprint and pinout compatibility for direct PCB substitution. However, functional verification is required to confirm dimming control signal compatibility and output stage integration with your specific application circuit.

Q: What is the primary difference between HV9910BLG-G and HV9910CSG-G?

A: HV9910CSG-G includes an exposed pad variant (8-SOIC-EP) for improved thermal dissipation and specifies a 15V minimum supply voltage, compared to HV9910BLG-G at 8V minimum. Both support identical dimming methods and frequency ranges. Selection depends on thermal requirements and available supply voltage in your application.

Q: Why do some substitutes use Triac dimming instead of PWM?

A: Triac dimming is an alternative control method suitable for AC line-dimmer applications, while PWM dimming provides digital control. Both methods achieve LED brightness adjustment. Application requirements determine which dimming method is appropriate. Verify your dimming control circuit compatibility before substitution.

Q: Is TS19450CS RLG a viable long-term substitute?

A: TS19450CS RLG is classified as Obsolete, similar to PAM99700AC. While it provides functional equivalence, it is not recommended for new designs or long-term production due to limited availability and potential future discontinuation.

Q: What package considerations apply when substituting PAM99700AC?

A: PAM99700AC uses 8-SOIC (0.154", 3.90mm Width) packaging. Most recommended substitutes maintain this footprint. FLS0116MX uses 7-SOIC and LM3497MMX/NOPB uses 10-VSSOP, requiring PCB layout modifications. Verify package dimensions and pin assignments before PCB redesign.

Q: Are all substitute parts ROHS3 compliant?

A: All Active substitute parts listed are ROHS3 compliant. TS19450CS RLG is also ROHS3 compliant but is Obsolete. Verify compliance documentation for your specific procurement source.

Q: What is the significance of Moisture Sensitivity Level (MSL) in substitution?

A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions during storage and handling. MSL 2A (4 Weeks) requires controlled storage conditions. PAM99700AC specifies MSL 1. Most substitutes maintain MSL 1 or 2A, ensuring compatibility with standard assembly procedures. Verify MSL requirements with your manufacturing process.