SSL21151T NXP [NXP Semiconductors], SSL21151T Datasheet - Page 6

• Manufacturer Part Number: SSL21151T
• Description: Low-cost non-dimmable LED driver IC
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
SSL2115X
Product data sheet
8.11 Operational limits
limits the V
created depending on implementation of a small preload. Without the small preload, the
protection latches.
The application must stay in Current Control Mode (CCM) for normal functionality. During
normal operation, the switching frequency can reach 0.85  f
must be met for the highest specified LED voltage.
On the other hand, the converter must be capable to handle the lowest specified LED
voltage. The auxiliary winding of the transformer generates the IC’s VCC supply voltage.
As the minimum and maximum requirements for the supply voltage of the IC have a given
ratio, the ratio of the lowest and highest LED voltage is also determined.
Choose the auxiliary voltage carefully if a large LED voltage ratio is required. An LED
voltage ratio up to three can be realized with this IC.
The open output protection limits the output voltage to U
designed according to the guidelines contained in this data sheet.
LED
when VCC reaches the V
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 7 June 2012
prot(VCC)
Low-cost non-dimmable LED driver IC
value. A non-latched application can be
max
/ 0.85 when the circuit is
sw(high)
. This requirement
SSL2115X
© NXP B.V. 2012. All rights reserved.
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