SSL2129AT

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© NXP B.V. 2012. All rights reserved.

Product data sheet

Rev. 2 — 23 October 2012

3 of 21

NXP Semiconductors

SSL2129AT

Dimmable LED controller IC

6.

Block diagram

Fig 1.

SSL2129AT block diagram

aaa-004040

NTC

FUNCTION

SUPPLY:

INTERNAL

REGULATOR

AND

BANDGAP

VALLEY

DETECTION

LOGIC

CONTROL

AND

PROTECTION

OCP

THERMAL

SHUTDOWN

POR

LOGIC

JFET

HV

VCC

NTC

GND

SOURCE

DRIVER

DRAIN

TONMOD

4

5

8

6

1

2

3

7

TONMOD

BLANK

TOFFMAX

0.5 V < > 0.25 V