L6574：CFL/TL Ballast Driver with Preheat and Dimming
In order to ensure voltage ratings in excess of 600V, the L6574 is manufactured with BCD OFF LINE technology, which makes it well suited for lamp ballast applications.
The device is intended to drive two power MOSFETS, in the classical half bridge topology, ensuring all the features needed to drive and properly control a fluorescent bulb.
A dedicated timing section in the L6574 allows the user set the necessary parameters for proper preheat and ignition of the lamp.
Also, an OP AMP is available to implement closed loop control of the lamp current during normal lamp burning.
An integrated bootstrap section, eliminating the normally required bootstrap diode and the zener clamping on Vs, makes the L6574 well suited for low cost applications where few additional components are needed to build a high performance ballast.
Key Features
- HIGH ACCURACY CURRENT CONTROLLED OSCILLATOR
- SENSE OP AMP FOR CLOSED LOOP CONTROL OR PROTECTION FEATURES
- CLAMPING ON VS.
- INTEGRATED BOOTSTRAP DIODE
- SO16, DIP 16 PACKAGES
- UNDER VOLTAGE LOCK OUT
- CMOS SHUT DOWN INPUT
- HIGH VOLTAGE RAIL UP TO 600V
- DRIVER CURRENT CAPABILITY: 250mA SOURCE 450mA SINK\t
- dV/dt IMMUNITY O± 50 V/ns IN FULL TEMPERATURE RANGE
- WITH 1nF LOAD
- PREHEAT AND FREQUENCY SHIFTING TIMING
- SWITCHING TIMES 80/40ns RISE/FALL
Product Specifications
| Description | Version | Size |
|---|---|---|
| DS1301: CFL/TL ballast driver preheat and dimming | 11.2 | 163 KB |
Application Notes
Software Development Tools
| Part Number | Manufacturer | Description |
|---|---|---|
| STSW-DRIVE004 | ST | Electronic ballast design simulator for fluorescent tubes and CFLs |
Solution Evaluation Tools
| Part Number | Manufacturer | Description |
|---|---|---|
| EVAL6574B | L6574 CFL/TL Ballast Driver Preheat and Dimming Evaluation Board |
Sample & Buy
| Part Number | Package | Packing Type | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|
| L6574D | SO-16 | Tube | - | - | NEC | EAR99 | CHINA |
| L6574D013TR | SO-16 | Tape And Reel | - | - | NEC | EAR99 | CHINA |
| L6574 | PDIP 16 | Tube | - | - | NEC | EAR99 | MALAYSIA |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| L6574D | SO-16 | Industrial | Ecopack2 (**) | md_q7-wspc-so-wspc-16-wspc-.15-wspc-to-wspc-jedec-wspc-ms-012_kkq7u363bdz-wspc-(l6574d013tr).pdf md_q7-wspc-so-wspc-16-wspc-.15-wspc-to-wspc-jedec-wspc-ms-012_kkq7u363bdz-wspc-(l6574d013tr)-wspc-wcp.xml |
| L6574D013TR | SO-16 | Industrial | Ecopack2 (**) | md_q7-wspc-so-wspc-16-wspc-.15-wspc-to-wspc-jedec-wspc-ms-012_kkq7u363bdz-wspc-(l6574d013tr).pdf md_q7-wspc-so-wspc-16-wspc-.15-wspc-to-wspc-jedec-wspc-ms-012_kkq7u363bdz-wspc-(l6574d013tr)-wspc-wcp.xml |
| L6574 | PDIP 16 | Industrial | Ecopack2 | md_17-wspc-pdip-wspc-16-wspc-.3-wspc-cu-wspc-.25-wspc-std_bl17u363bdz-wspc-(l6574)-wspc-wcp-wspc-ver2_signed.pdf md_17-wspc-pdip-wspc-16-wspc-.3-wspc-cu-wspc-.25-wspc-std_bl17u363bdz-wspc-(l6574)-wspc-wcp-wspc-ver2.xml |
- circuit_diagram_5654_thumbnail.png L6574
- 20 W dimmable CFL ballast solution L6574
- 2X36 W digital dimmable ballast with L6574 and ST7FDALI L6574
- CCFL backlight half-bridge topology based on L6574 and STD7NS20 L6574
- Electronic ballast with PFC using L6574 and L6561 EVAL6574B
- L6574 & microcontroller in ballast applications L6574
- VIPower: 18 - 23W electronic ballast for removable tubes L6382D5
- VIPower: HF converter based on VK06TL devices to drive 58W TL tubes L6382D5
- md_q7-wspc-so-wspc-16-wspc-.15-wspc-to-wspc-jedec-wspc-ms-012_kkq7u363bdz-wspc-(l6574d013tr).pdf L6574
- md_q7-wspc-so-wspc-16-wspc-.15-wspc-to-wspc-jedec-wspc-ms-012_kkq7u363bdz-wspc-(l6574d013tr)-wspc-wcp.xml L6574
- md_17-wspc-pdip-wspc-16-wspc-.3-wspc-cu-wspc-.25-wspc-std_bl17u363bdz-wspc-(l6574)-wspc-wcp-wspc-ver2_signed.pdf L6574
- md_17-wspc-pdip-wspc-16-wspc-.3-wspc-cu-wspc-.25-wspc-std_bl17u363bdz-wspc-(l6574)-wspc-wcp-wspc-ver2.xml L6574
