Key facts
- Brand
- STMicroelectronics
- Model
- L6574
- Industry
- Industrial
- Documents
- 7
- Languages
- EN
- Last added
- 2026-10-17
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STMicroelectronics L6574 Ballast Driver Datasheet
The L6574 is a high-voltage ballast driver manufactured using BCD offline technology, designed specifically for fluorescent lamp applications. It features a half-bridge topology capable of driving two power MOSFETs to ensure proper preheat and ignition of the lamp. The device includes an operational amplifier for closed-loop control of lamp current and an integrated bootstrap section to eliminate the need for external bootstrap diodes and zener clamping on Vs.
Read onlineSTMicroelectronics L6574 specifications
| Supply Voltage | 10 to 600 V |
|---|---|
| dV/dt Immunity | ± 50 V/ns |
| Driver Current Capability (Source) | 250 mA |
| Driver Current Capability (Sink) | 450 mA |
| Switching Times (Rise/Fall) | 80/40 ns |
| Storage Temperature | -40 to +150 °C |
| Ambient Temperature | -40 to +125 °C |
| Output Duty Cycle | 48 to 52 % |
| Op Amp Gain Band Width Product | 1 MHz |
| Op Amp DC Open Loop Gain | 80 dB |
| Enable Comparators Threshold | 0.56 to 0.64 V |
| Enable Comparators Hysteresis | 20 to 100 mV |
| Minimum Pulse Length | 200 ns |
| Dead Time | 0.8 to 1.7 µs |
| Package Types | SO16, DIP 16 |
All STMicroelectronics L6574 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the maximum voltage rating of the L6574?
The device is manufactured with BCD offline technology to ensure voltage ratings in excess of 600V.
Does the L6574 include an integrated bootstrap diode?
Yes, it features an integrated bootstrap section that replaces the normally required external bootstrap diode and zener clamping on Vs.
How does the L6574 handle preheat timing?
Preheat timing is set by connecting a capacitor to the CPRE pin, which is charged with a fixed current.
From: STMicroelectronics L6574 CFL/TL Ballast Driver Datasheet
Does the L6574 include an integrated bootstrap diode?
Yes, it features an integrated bootstrap section that replaces the external bootstrap diode.
From: STMicroelectronics L6574 CFL/TL Ballast Driver Datasheet
What is the maximum supply voltage for the L6574?
The device is designed for high voltage rail applications with a supply voltage up to 600V.
From: STMicroelectronics L6574 CFL/TL Ballast Driver Datasheet
Does the L6574 include an integrated bootstrap diode?
Yes, it features an integrated bootstrap section that replaces the normally required external bootstrap diode.
From: STMicroelectronics L6574 CFL/TL Ballast Driver Datasheet