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LC5523D LED Driver IC - Equivalent & Substitute Parts
Part Overview
The LC5523D is an AC DC offline switcher LED driver IC manufactured by Sanken Electric USA Inc., designed for single-output lighting applications. This 8-DIP through-hole component features an internal switch and operates across a supply voltage range up to 20V with an operating temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | LC5523D Value |
|---|---|
| Manufacturer | Sanken Electric USA Inc. |
| Category | Power Management (PMIC) |
| Type | AC DC Offline Switcher |
| Number of Outputs | 1 |
| Internal Switch(s) | Yes |
| Voltage - Supply (Max) | 20V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm), 7 Leads |
| Product Status | Obsolete |
| RoHS Status | RoHS Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the LC5523D is determined by the following critical parameters:
- Type: AC DC Offline Switcher topology
- Number of Outputs: Single output configuration
- Internal Switch Requirement: Presence of integrated switching element
- Supply Voltage Compatibility: Maximum supply voltage rating
- Operating Temperature Range: Thermal operating envelope
- Package Compatibility: Physical form factor and lead count
- Product Status: Active or Last Time Buy status preferred over obsolete
The substitute parts identified below maintain functional equivalence within the AC DC offline switcher category while accommodating variations in mounting technology (surface mount vs. through-hole), topology specifics (buck, boost, flyback), and dimming control methods (triac-based or standard).
Parameter Comparison
| Parameter | LC5523D | MP4068GS | NCL30060BDR2G | TPS92001DGKR | TS19452CS RLG |
|---|---|---|---|---|---|
| Manufacturer | Sanken Electric USA Inc. | Monolithic Power Systems | onsemi | Texas Instruments | Taiwan Semiconductor Corporation |
| Type | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 |
| Internal Switch(s) | Yes | No | No | No | Yes |
| Voltage - Supply (Max) | 20V | 5V | 28V | 21V | 400V |
| Mounting Type | Through Hole | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-DIP (0.300", 7.62mm), 7 Leads | 8-SOIC (0.154", 3.90mm Width), 7 Leads | 8-SOIC (0.154", 3.90mm Width), 7 Leads | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete | Active | Active | Last Time Buy | Active |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 2 (1 Year) | 1 (Unlimited) | 2 (1 Year) | 3 (168 Hours) |
Engineering Selection Recommendations
MP4068GS (Monolithic Power Systems): Active product status with ROHS3 compliance. Suitable for designs tolerating surface-mount conversion and lower maximum supply voltage (5V). Triac dimming capability aligns with lighting applications.
NCL30060BDR2G (onsemi): Active product with unlimited MSL rating and ROHS3 compliance. Maximum supply voltage of 28V exceeds LC5523D specification. Surface-mount package requires PCB redesign. Flyback and buck topology options provide design flexibility.
TPS92001DGKR (Texas Instruments): Last Time Buy status with ROHS3 compliance and 21V maximum supply voltage compatibility. Triac dimming and 100kHz frequency specified. Smallest package footprint (8-TSSOP/MSOP) requires careful PCB layout consideration.
TS19452CS RLG (Taiwan Semiconductor Corporation): Active product with internal switch matching LC5523D architecture. Highest maximum supply voltage (400V) and 100mA output current. Surface-mount 8-SOIC package. MSL rating of 3 requires controlled storage conditions.
Frequently Asked Questions (FAQ)
Q: Can I directly replace LC5523D with a surface-mount substitute without PCB modification?
A: No. The LC5523D uses through-hole 8-DIP packaging. All identified substitutes employ surface-mount technology (SOIC, TSSOP, or MSOP packages), requiring PCB redesign and reflow soldering processes.
Q: Which substitute maintains the closest electrical compatibility with LC5523D?
A: TS19452CS RLG shares the internal switch architecture of LC5523D and operates across a compatible supply voltage range. However, its 400V maximum rating and 8-SOIC surface-mount package differ from the original.
Q: Are all substitutes RoHS compliant?
A: Yes. All identified substitutes carry ROHS3 compliance certification, matching the RoHS Compliant status of LC5523D.
Q: What is the impact of MSL rating differences?
A: LC5523D and NCL30060BDR2G carry MSL-1 (unlimited shelf life). MP4068GS and TPS92001DGKR require MSL-2 storage (1 year maximum). TS19452CS RLG requires MSL-3 conditions (168 hours maximum). Stricter MSL ratings demand controlled humidity storage and shorter handling windows.
Q: Can I use TPS92001DGKR as a drop-in replacement?
A: No. TPS92001DGKR uses 8-VSSOP surface-mount packaging versus LC5523D's through-hole 8-DIP. Circuit board layout and assembly process changes are mandatory.
Q: Which substitute has the longest product lifecycle?
A: MP4068GS, NCL30060BDR2G, and TS19452CS RLG all carry Active product status, ensuring ongoing availability. TPS92001DGKR is Last Time Buy, indicating limited future supply.
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