Overview
The UBA2021T/N2,512 is a high voltage integrated circuit (IC) designed by NXP USA Inc. to drive and control Compact Fluorescent Lamps (CFL) and fluorescent TL lamps. This IC is part of the UBA2021 series and is specifically tailored for applications requiring efficient and reliable lamp control.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| High voltage supply (VFS) | IFS < 15 µA; t < 0.5 s | - | - | 630 | V |
| Oscillator start voltage (VVS(start)) | - | - | 11.95 | - | V |
| Oscillator stop voltage (VVS(stop)) | - | - | 10.15 | - | V |
| Standby current (IVS(standby)) | VVS = 11 V | - | 200 | - | µA |
| Start frequency (fstart) | - | - | 108 | - | kHz |
| Preheat time (tph) | CCP = 100 nF | - | 666 | - | ms |
| Bottom frequency (fB) | - | - | 42.9 | - | kHz |
| Ignition time (tign) | - | - | 625 | - | ms |
| Non-overlap time (tno) | - | - | 1.4 | - | µs |
| Total supply current (Itot) | fB = 43 kHz | - | 1 | - | mA |
| High and low side on resistance (RG1(on), RG2(on)) | - | - | 126 | - | Ω |
| High and low side off resistance (RG1(off), RG2(off)) | - | - | 75 | - | Ω |
Key Features
- Adjustable preheat and ignition time
- Adjustable preheat current
- Adjustable lamp power
- Lamp power independent from mains voltage variations
- Overpower protection
- Lamp temperature stress protection at higher mains voltages
- Capacitive mode protection
- Protection against a drive voltage that is too low for the power MOSFETs
Applications
The UBA2021T/N2,512 is designed for use in electronically ballasted compact fluorescent lamps (CFL) and fluorescent TL lamps. It is suitable for applications where efficient and reliable lamp control is necessary, particularly in lighting systems operating with mains voltages up to 240 V (RMS).
Q & A
- What is the primary function of the UBA2021T/N2,512 IC?
The primary function of the UBA2021T/N2,512 IC is to drive and control Compact Fluorescent Lamps (CFL) and fluorescent TL lamps. - What are the key adjustable parameters of the UBA2021T/N2,512?
The key adjustable parameters include preheat and ignition time, preheat current, and lamp power. - What type of protection does the UBA2021T/N2,512 offer?
The IC offers overpower protection, lamp temperature stress protection, capacitive mode protection, and protection against low drive voltage for power MOSFETs. - What is the maximum high voltage supply for the UBA2021T/N2,512?
The maximum high voltage supply (VFS) is 630 V. - What is the typical standby current of the UBA2021T/N2,512?
The typical standby current (IVS(standby)) is 200 µA at VVS = 11 V. - What is the start frequency of the oscillator in the UBA2021T/N2,512?
The start frequency (fstart) is typically 108 kHz. - What is the non-overlap time in the UBA2021T/N2,512?
The non-overlap time (tno) is typically 1.4 µs. - Is the UBA2021T/N2,512 still in production?
No, the UBA2021T/N2,512 is obsolete and no longer manufactured. - What are the typical high and low side on resistances of the UBA2021T/N2,512?
The typical high and low side on resistances (RG1(on), RG2(on)) are 126 Ω. - What is the maximum ambient temperature for the UBA2021T/N2,512?
The maximum ambient temperature (Tamb) is 150 °C.
