SSL21082T datasheet(2/24 Pages) PHILIPS

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SSL21081T_2T_3T_4T

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Preliminary data sheet

Rev. 2 — 6 December 2011

2 of 24

NXP Semiconductors

SSL21081T/2T/3T/4T

GreenChip drivers for LED lighting

 No over or undershoots in the LED current

 No binning on LED forward voltage required

 Internal Protections:

 UnderVoltage LockOut (UVLO)

 Leading-Edge Blanking (LEB)

 OverCurrent Protection (OCP)

 Short-Winding Protection (SWP)

 Internal OverTemperature Protection (OTP)

 Brownout protection

 Output Short Protection (OSP)

 Low component count (see Figure 4) LED driver solution:

 No Schottky diode required due to ZCS

 No dim switch and high-side driver required for PWM dimming

 Easy external temperature protection with a single NTC resistor

 Option for soft-start function

 Compatible with wall switches with built-in indication light during standby1

 IC lifetime easily matches or surpasses LED lamp lifetime

Applications

SSL2108X products are intended for compact LED lighting applications with accurate

fixed current output for single mains input voltages. Mains input voltages include 100 V,

120 V and 230 V (AC). The output signal can be modulated using a PWM signal.

Quick reference data

The Hotaru switch is a well known wall switch with built-in light

Table 1.

Quick reference data

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VCC

supply voltage

8.0

15.5

RDSon

drain-source on-state

resistance

SSL21083T,

SSL21084T,

TJ = 25 C

4.0

5.0

6.0



SSL21083T,

SSL21084T,

TJ = 125 C

6.0

7.5

9.0



SSL21081T,

SSL21082T,

TJ = 25 C

2.05

2.3

2.55



SSL21081T,

SSL21082T,

TJ = 125 C

3.05

3.45

3.8



fconv

conversion frequency

200

kHz

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