UBA20262T/1,518 データシートの表示（PDF） - NXP Semiconductors.
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UBA20262T/1,518 Datasheet PDF : 32 Pages
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UBA20261/2
600 V and 350 V power IC for step dimmable CFLs
Rev. 2 — 10 October 2011
Product data sheet
1. General description
The UBA20261/2 are high-voltage power integrated circuits designed to drive and control
high powered self-ballasted Compact Fluorescent Lamp (CFL) lighting applications
operating at mains supply voltages of 120 V or 230 V. The IC includes a half-bridge power
circuit consisting of two NMOST power MOSFETs, an advanced feature for step dimming
and a lamp current controlled boost feature for boosting cold (amalgam) CFLs.
The controller contains a CFL half-bridge drive function, a high-voltage level-shift circuit
with integrated bootstrap diode, an oscillator function, a current control function for
preheat and burn, a timer function and protection circuits. The UBA20261/2 are supplied
using the dV/dt current charge supply circuit from the half-bridge circuit.
Remark: The mains voltages given in this data sheet are AC voltages.
2. Features and benefits
2.1 Half-bridge features
UBA20261: two internal 350 V, 1 , maximum 5 A NMOST half-bridge power
MOSFETs
UBA20262: two internal 600 V, 3 , maximum 2.7 A NMOST half-bridge power
MOSFETs
Integrated high-voltage level-shifter function with integrated bootstrap diode
2.2 Preheat and ignition features
Coil saturation protection during ignition
Adjustable saturation protection level
Adjustable preheat time
Adjustable preheat current
Ignition lamp current detection
2.3 Lamp boost features
Adjustable boost timing
Fixed boost current ratio of 1.5
Gradually boost to burn transition timing
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