Overview
The UBA2021T/N2,118 is a high-voltage integrated circuit designed by NXP USA Inc. for driving and controlling Compact Fluorescent Lamps (CFL) and fluorescent TL lamps. This IC is part of the UBA2021 series and is specifically tailored to manage the preheat, ignition, and steady-state operation of these lamps. It integrates a driver circuit for an external half-bridge, an oscillator, and comprehensive control functions to ensure reliable and efficient lamp operation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| High voltage supply (VFS) | High side supply voltage, IFS < 15 µA; t < 0.5 s | - | - | 630 | V |
| Start-up state (VVS(start)) | Oscillator start voltage | - | 11.95 | - | V |
| Standby current (IVS(standby)) | VVS = 11 V | - | 200 | - | µA |
| Preheat mode frequency (fstart) | - | - | 108 | - | kHz |
| Preheat time (tph) | CCP = 100 nF | - | 666 | - | ms |
| Ignition time (tign) | - | - | 625 | - | ms |
| Normal operation frequency (fB) | - | - | 42.9 | - | kHz |
| 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 |
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/N2,118 is primarily used in the control and driving of Compact Fluorescent Lamps (CFL) and fluorescent TL lamps. It is suitable for applications where reliable and efficient lamp operation is crucial, including general lighting systems, industrial lighting, and specialized lighting solutions.
Q & A
- What is the primary function of the UBA2021T/N2,118 IC?
The primary function of the UBA2021T/N2,118 IC is to drive and control Compact Fluorescent Lamps (CFL) and fluorescent TL lamps, managing preheat, ignition, and steady-state operation. - What is the maximum high voltage supply for the UBA2021T/N2,118?
The maximum high voltage supply (VFS) for the UBA2021T/N2,118 is 630 V. - What are the adjustable parameters in the UBA2021T/N2,118?
The UBA2021T/N2,118 allows for adjustable preheat and ignition time, adjustable preheat current, and adjustable lamp power. - What kind of protection does the UBA2021T/N2,118 offer?
The UBA2021T/N2,118 offers overpower protection, lamp temperature stress protection, capacitive mode protection, and protection against a drive voltage that is too low for the power MOSFETs. - What is the typical frequency of operation for the UBA2021T/N2,118?
The typical frequency of operation for the UBA2021T/N2,118 is around 42.9 kHz. - What is the non-overlap time in normal operation?
The non-overlap time (tno) in normal operation is 1.4 µs. - What is the total supply current at a frequency of 43 kHz?
The total supply current (Itot) at a frequency of 43 kHz is approximately 1 mA. - What are the typical high and low side on resistances?
The typical high and low side on resistances (RG1(on), RG2(on)) are 126 Ω. - What are the common applications of the UBA2021T/N2,118?
The UBA2021T/N2,118 is commonly used in general lighting systems, industrial lighting, and specialized lighting solutions. - Is the UBA2021T/N2,118 still in production?
No, the UBA2021T/N2,118 is listed as obsolete.
