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LM2907MX
Electronics Part Number
LM2907MX-WXManufacturer
Infineon Technologies
LM2907MX
Description
10kHz F/V Converter in 14-Pin SOIC PackageInventory
126 Pcs New Original In Stock
Frequency-to-voltage converter IC in 14-SOIC; 10kHz, ±0.3%; stable and accurate frequency-to-DC conversion for industrial instrumentation, rpm meters, and signal analysis.
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Minimum 1
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Basic cost: USD 70.00
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Technical Specifications
Category
Power Management (PMIC), PFC (Power Factor Correction)
Manufacturer
Infineon Technologies
Packaging
-
Operating Temperature
-25°C ~ 85°C
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Series
-
Base Product Number
TDA16888
Product Status
Obsolete
Voltage - Supply
0V ~ 17.5V
Supplier Device Package
P-DIP-20-5
Mode
Average Current
Frequency - Switching
200kHz
Current - Startup
50 µA
Data Sheet Document (D)
Datasheets
Download TDA16888 Product Specification (PDF)
HTML Datasheet
TDA16888-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
SP000011721 TDA16888X TDA16888XK
Standard Package
720
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Frequently Asked Questions (FAQ)
What are the key reliability risks when designing in the TDA16888 for a high-temperature industrial
The TDA16888’s limited operating temperature range (up to 85°C) poses a significant risk in high-ambient industrial environments where enclosure temperatures can exceed 70°C, leaving minimal thermal headroom. Combined with its obsolete status, long-term availability and potential counterfeit parts become major concerns. To mitigate, implement robust thermal management (e.g., heatsinking, airflow), derate power components early, and source only from authorized distributors with traceability. Consider qualifying a modern drop-in replacement like the Infineon ICE1CS02G or ON Semiconductor NCP1654 for future designs to avoid end-of-life disruptions.
Can the TDA16888 be safely replaced with the NCP1654 in an existing 200kHz average current mode PFC
While both the TDA16888 and NCP1654 support average current mode control at similar switching frequencies (~200kHz), direct replacement is not recommended without evaluation. The NCP1654 uses a different pinout (SOIC-8 vs. DIP-20), requires different biasing, and has distinct current sensing and feedback loop dynamics. You’ll likely need to redesign the feedback compensation network and adjust gate drive components. Perform bench validation of loop stability and THD performance before committing to the swap, especially if your application demands tight power factor compliance.
What design constraints should I consider when integrating the TDA16888 into a compact offline power
The TDA16888’s through-hole P-DIP-20 package increases PCB real estate and complicates high-density layouts, especially in slim or automated assembly environments. Its lack of built-in protections (e.g., no overtemperature shutdown or robust UVLO) demands external circuitry for safe operation. Additionally, the 50 µA startup current is low, but you must ensure the startup resistor network doesn’t dissipate excessive power at high input voltages. Consider using a modern SMD PFC controller like the Texas Instruments UCC28180 for tighter layouts and better integration, unless legacy compatibility forces TDA16888 retention.
How does the TDA16888’s average current mode control perform under light-load conditions compared to
The TDA16888 maintains continuous conduction mode (CCM) across all loads due to its fixed-frequency average current control, which results in higher switching and conduction losses at light loads compared to modern controllers like the STMicroelectronics L6562A (with transition mode) or the ON Semiconductor NCP1607 (with frequency foldback). This leads to poorer efficiency below 20–30% load, a critical drawback for Energy Star or CoC Tier 2 compliance. If light-load efficiency is a priority, consider adding a bypass relay or migrating to a hybrid-mode controller, though this increases complexity—evaluate total system cost versus efficiency gains.
Given that the TDA16888 is obsolete, what verification steps are essential before using it in a new
Before committing the TDA16888 to new production, conduct full functional and environmental testing under worst-case conditions (min/max Vin, temperature extremes, transient loads) to verify performance hasn’t drifted due to aging or counterfeit stock. Cross-check date codes and request full traceability documentation from suppliers. Since Infineon no longer supports this part, establish a last-time buy strategy or dual-source with a pin-compatible alternative such as the Microchip MCP16311 (with external MOSFET). Document a sunset plan for eventual migration to a supported PFC solution to avoid future line-down scenarios.
What are the key reliability risks when designing in the TDA16888 for a high-temperature industrial
The TDA16888’s limited operating temperature range (up to 85°C) poses a significant risk in high-ambient industrial environments where enclosure temperatures can exceed 70°C, leaving minimal thermal headroom. Combined with its obsolete status, long-term availability and potential counterfeit parts become major concerns. To mitigate, implement robust thermal management (e.g., heatsinking, airflow), derate power components early, and source only from authorized distributors with traceability. Consider qualifying a modern drop-in replacement like the Infineon ICE1CS02G or ON Semiconductor NCP1654 for future designs to avoid end-of-life disruptions.
Can the TDA16888 be safely replaced with the NCP1654 in an existing 200kHz average current mode PFC
While both the TDA16888 and NCP1654 support average current mode control at similar switching frequencies (~200kHz), direct replacement is not recommended without evaluation. The NCP1654 uses a different pinout (SOIC-8 vs. DIP-20), requires different biasing, and has distinct current sensing and feedback loop dynamics. You’ll likely need to redesign the feedback compensation network and adjust gate drive components. Perform bench validation of loop stability and THD performance before committing to the swap, especially if your application demands tight power factor compliance.
What design constraints should I consider when integrating the TDA16888 into a compact offline power
The TDA16888’s through-hole P-DIP-20 package increases PCB real estate and complicates high-density layouts, especially in slim or automated assembly environments. Its lack of built-in protections (e.g., no overtemperature shutdown or robust UVLO) demands external circuitry for safe operation. Additionally, the 50 µA startup current is low, but you must ensure the startup resistor network doesn’t dissipate excessive power at high input voltages. Consider using a modern SMD PFC controller like the Texas Instruments UCC28180 for tighter layouts and better integration, unless legacy compatibility forces TDA16888 retention.
How does the TDA16888’s average current mode control perform under light-load conditions compared to
The TDA16888 maintains continuous conduction mode (CCM) across all loads due to its fixed-frequency average current control, which results in higher switching and conduction losses at light loads compared to modern controllers like the STMicroelectronics L6562A (with transition mode) or the ON Semiconductor NCP1607 (with frequency foldback). This leads to poorer efficiency below 20–30% load, a critical drawback for Energy Star or CoC Tier 2 compliance. If light-load efficiency is a priority, consider adding a bypass relay or migrating to a hybrid-mode controller, though this increases complexity—evaluate total system cost versus efficiency gains.
Given that the TDA16888 is obsolete, what verification steps are essential before using it in a new
Before committing the TDA16888 to new production, conduct full functional and environmental testing under worst-case conditions (min/max Vin, temperature extremes, transient loads) to verify performance hasn’t drifted due to aging or counterfeit stock. Cross-check date codes and request full traceability documentation from suppliers. Since Infineon no longer supports this part, establish a last-time buy strategy or dual-source with a pin-compatible alternative such as the Microchip MCP16311 (with external MOSFET). Document a sunset plan for eventual migration to a supported PFC solution to avoid future line-down scenarios.
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Sep 15 2026
