SSL2102_技术文档

SSL2102

Mains LED driver IC for dimmable LED lighting

Rev. 01 — 29 June 2009

Product data sheet

1. General description

The SSL2102 is a Switched Mode Power Supply (SMPS) controller IC that operates in

combination with a phase cut dimmer directly from rectiﬁed mains. It is designed to drive

LED devices. The device includes a high-voltage power switch and a circuit to allow direct

start-up from the rectiﬁed mains voltage. Furthermore the device includes high-voltage

circuitry to supply the phase cut dimmer.

For dimmer applications, integrated dedicated circuitry optimizes the dimming curve.

2. Features

I Easy migration to existing lighting control infrastructure, TRIAC and transistor dimmers

I Supports majority of available dimming solutions

I Valley switching efﬁciency is optimized by dedicated built-in circuitry

I Built-in demagnetization detection

I The IC has Over Temperature Protection (OTP) built-in

I Short-Winding Protection (SWP) and Over Current Protection (OCP)

I The IC has internal V_CCgeneration that allows start-up from rectiﬁed mains voltage

I Natural dimming curve by logarithmic correction

I Limited external components required due to high integration level

I Thermal enhanced SO20 wide body package.

3. Applications

The SSL2102 is suitable for high efﬁciency and high power factor SSL applications below

25 W, these include:

I SSL retro-ﬁt lamps (e.g. GU10, E27) from 8 W to 15 W.

I LED modules, separate power supplies, e.g. LED spots, down-lights from 15 W to

25 W

I LED strings, e.g. retail display up to a maximum of 25 W

For power ratings below 15 W (for LED modules) and 8 W (for SSL retroﬁt) NXP offers the

SSL2101.

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

4. Quick reference data

Table 1.

Quick reference data

Symbol Parameter

Conditions

Min Typ

Max

Unit

R_DSon

drain-source on-state

power switch; I_SOURCE= −0.50 A

resistance

T_j= 25 °C

4.5 6.5

7.5

Ω

I_SOURCE= −0.20 A

T_j= 125 °C

-

9.5

10

Ω

V_CC

supply voltage

8.5

10

-

40

V

f_osc

oscillator frequency

current on pin DRAIN

100

-

200

2.2

kHz

mA

I_DRAIN

V_DRAIN> 60 V;

no auxiliary supply

V_DRAIN> 60 V;

-

30

125

µA

with auxiliary supply

V_DRAIN

δ_min

voltage on pin DRAIN

minimum duty factor

maximum duty cycle

ambient temperature

40

-

600

V

-

0

75

-

%

δ_max

-

T_amb

−40

+100 °C

5. Ordering information

Table 2.

Ordering information

Type number Package

Name

Description

Version

SOT163-1

SSL2102T

SO20

plastic small outline package; 20 leads; body width 7.5 mm

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

2 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

6. Block diagram

ISENSE

SBLEED WBLEED

12

1

4

BLEEDER

5

20

V

SUPPLY

DRAIN

CC

VALLEY

13

AUX

LOGIC

2, 3, 6, 7, 14,

16, 17, 18, 19

100 mV

GND

RC

Stop

10

OSCILLATOR

Low freq

15

SOURCE

Blank

THERMAL

SHUTDOWN

PROTECTION

LOGIC

POWER - UP

RESET

0.5 V

8

9

BRIGHTNESS

RC2

FRC

1.5 V

Overcurrent

PWM

LIMIT

CIRCUIT

11

PWMLIMIT

Short-winding protection

014aaa810

Fig 1. Block diagram

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

7. Pinning information

7.1 Pinning

1

2

20

19

18

17

16

15

14

13

12

11

SBLEED

GND

DRAIN

GND

3

GND

4

WBLEED

GND

5

V

CC

GND

SSL2102

6

GND

SOURCE

GND

7

8

BRIGHTNESS

RC2

AUX

9

ISENSE

PWMLIMIT

10

RC

014aaa807

Fig 2. Pin conﬁguration SO20

7.2 Pin description

Table 3.

Pin description

Symbol

SBLEED

GND

1

Description

drain of internal strong bleeder switch

ground

2

GND

3

ground

WBLEED

V_CC

4

drain of internal weak bleeder switch

supply voltage

5

GND

6

ground

GND

7

ground

BRIGHTNESS

RC2

8

brightness input

9

setting for frequency reduction

frequency setting

RC

10

11

12

13

PWMLIMIT

ISENSE

AUX

PWM limit input

current sense input for WBLEED

Input for voltage from auxiliary winding for timing

(demagnetization)

GND

14

15

16

17

18

19

20

ground

SOURCE

GND

source of internal power switch

ground

GND

DRAIN

drain of internal power switch; input for start-up current and valley

sensing

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

4 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

8. Functional description

The SSL2102 is a LED driver IC that operates directly from the rectiﬁed mains.

The SSL2102 uses on-time mode control and frequency control to control the LED

brightness. The BRIGHTNESS and PWMLIMIT input of the IC can be used to control the

LED light output in combination with an external dimmer. The PWMLIMIT input can also

be used for Thermal Lumen Management (TLM) and for precision LED current control.

8.1 Start-up and UnderVoltage LockOut (UVLO)

Initially, the IC is self-supplying from the rectiﬁed mains voltage. The IC starts switching as

soon as the voltage on pin V_CCpasses the V_CC(startup)level. The supply can be taken over

by the auxiliary winding of the transformer as soon as V_CCis high enough and the supply

from the line is stopped for high efﬁciency operation. Alternatively the IC can be supplied

via a bleeder resistor connected to a high voltage.

Remark: The maximum V_CCvoltage rating of the IC.

If for some reason the auxiliary supply is not sufﬁcient, the high-voltage supply can also

supply the IC. As soon as the voltage on pin V_CCdrops below the V_CC(UVLO)level, the IC

stops switching and will restart from the rectiﬁed mains voltage, if the internal current

delivered is sufﬁcient.

8.2 Oscillator

An internal oscillator inside the IC provides the timing for the switching converter logics.

The frequency of the oscillator is set by the external resistors and the capacitor on pin RC

and pin RC2. The external capacitor is charged rapidly to the V_RC(max)level and, starting

from a new primary stroke, it discharges to the V_RC(min)level. Because the discharge is

exponential, the relative sensitivity of the duty factor to the regulation voltage at low duty

factor is almost equal to the sensitivity at high duty factors. This results in a more constant

gain over the duty factor range compared to Pulse Width Modulated (PWM) systems with

a linear sawtooth oscillator. Stable operation at low duty factors is easily realized. The

frequency of the converter when V_BRIGHTNESSis high can be estimated using Equation 1:

1

RC =

– t

(1)

------

3.5

---------

f _osc

ch arge

R equals the parallel resistance of both oscillator resistors. C is the capacitor connected at

the RC pin (pin 8).

The BRIGHTNESS input controls the frequency reduction mode. Figure 3 shows that the

oscillator switches over from an RC curve with R1//R2 to R1 only. A low BRIGHTNESS

voltage will reduce the switching frequency.

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

5 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

5 V

STARplug

OSCILLATOR

RC

24 µA

R1

R2

220 kΩ

10 kΩ

BRIGHTNESS

Comparator

C1

330 pF

RC2

V

rc_threshold

014aaa574

Fig 3. Brightness control block

A typical RC waveform is given in Figure 4. The RC switch-over threshold is controlled by

the BRIGHTNESS pin.

To ensure that the capacitor can be charged within the charge time, the value of the

oscillator capacitor should be limited to 1 nF. Leakage current limits the value of the

resistor connected between the RC pin and the ground should be limited to a maximum of

220 kΩ.

Voltage

(mV)

RC voltage

rc_threshhold

75 mV

014aaa582

time

Fig 4. Brightness timing waveform.

8.3 Duty factor control

The duty factor is controlled by an internally regulated voltage and the oscillator signal on

pin RC. The internal regulation voltage is set by the voltage on the PWMLIMIT pin.

A low PWMLIMIT voltage will results in a low on-time for the internal power switch. The

minimum duty factor of the switched mode power supply can be set to 0 %. The maximum

duty factor is set to 75 %.

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

6 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

8.4 Bleeder for dimming applications

The SSL2102 IC contains some circuitry intended for mains dimmer compatibility. This

circuit contains two current sinks that are called bleeders. A strong bleeder is used for

zero-cross reset of the dimmer and TRIAC latching. A weak bleeder is added to maintain

the hold current through the dimmer.

The strong bleeder switch is switched on when the maximum voltage on the WBLEED pin

and the SBLEED pin is below the V_th(SBLEED)level (52 V typically). The weak bleeder

switch is switched on as soon as the voltage on pin ISENSE exceeds the V_{th(high)(ISENSE)}

level (−100 mV typically). The weak bleeder switch is switched off when the ISENSE

voltage drops below the V_{th(low)(ISENSE)}level (−250 mV typically). The weak bleeder switch

is also switched off when the strong bleeder switch is switched on. See Figure 5.

WBLEED

SBLEED

D2

D3

Integrated

I1

20 µA

B1

LOW V DETECT

M2

M1

Q

S R

OR

−0.1 V

−0.25 V

ISENSE

GND

014aaa571

Fig 5. Bleeder circuit

8.5 Valley switching

A new cycle is started when the primary switch is switched on (see Figure 6). After a time

determined by the oscillator voltage, RC and the internal regulation level, the switch is

turned off and the secondary stroke starts. The internal regulation level is determined by

the voltage on pin PWMLIMIT.

After the secondary stroke, the drain voltage shows an oscillation with a frequency of

approximately:

1

(2)

----------------------------------------------

2 × π × (L_p× C_p)

where:

L_p= primary self inductance

C_p= parasitic capacitance on drain node

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

7 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

As soon as the oscillator voltage is high again and the secondary stroke has ended, the

circuit waits for a low drain voltage before starting a new primary stroke.

Figure 6 shows the drain voltage together with the valley signal, the signal indicating the

secondary stroke and the RC voltage.

The primary stroke starts some time before the actual valley at low ringing frequencies,

and some time after the actual valley at high ringing frequencies.

primary

stroke

secondary

stroke

secondary

ringing

drain

valley

secondary

stroke

A

B

regulation level

RC

oscillator

014aaa572

A: Start of new cycle with valley switching.

B: Start of new cycle in a classical PWM system.

Fig 6. Signals for valley switching, ﬂyback conﬁguration

Figure 7 shows a typical curve for a reﬂected output voltage N at an output voltage of

80 V. This voltage is the output voltage transferred to the primary side of the transformer

with the factor N (determined by the turns ratio of the transformer). It shows that the

system switches exactly at minimum drain voltage for ringing frequencies of 480 kHz, thus

reducing the switch-on losses to a minimum. At 200 kHz, the next primary stroke is

started at 33 ° before the valley. The switch-on losses are still reduced signiﬁcantly.

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

8 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

014aaa573

40

phase

(°)

20

0

−20

−40

0

200

400

600

800

f (kHz)

(1) At N × V_o= 80 V)

Fig 7. Typical phase of drain ringing at switch-on (at

8.6 Demagnetization

The system operates in discontinuous conduction mode if the AUX pin is connected. As

long as the secondary stroke has not ended, the oscillator will not start a new primary

stroke. During the ﬁrst t_{sup(xfmr_ring)}seconds, demagnetization recognition is suppressed.

This suppression may be necessary in applications where the transformer has a large

leakage inductance and at low output voltages.

8.7 Overcurrent protection

The cycle-by-cycle peak drain current limit circuit uses the external source resistor

R_SENSE¹to measure the current. The circuit is activated after the leading edge blanking

time t_leb. The protection circuit limits the source voltage over the R_SENSEresistor to

V_{th(ocp)SOURCE}and thus limits the primary peak current.

8.8 Short-winding protection

The short-winding protection circuit is also activated after the leading edge blanking time.

If the source voltage exceeds the short-winding protection threshold voltage

V_{th(swp)SOURCE}, the IC stops switching. Only a power-on reset will restart normal operation.

The short-winding protection also protects in case of a secondary diode short circuit.

8.9 Overtemperature protection

Accurate temperature protection is provided in the device. When the junction temperature

exceeds the thermal shut-down temperature, the IC stops switching. During thermal

protection, the IC current is lowered to the start-up current. The IC continues normal

operation as soon as the overtemperature situation has disappeared.

1. R_SENSEis the resistor between the SOURCE pin and GND

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

9. Limiting values

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are measured

with respect to ground; positive currents ﬂow into the device; pins V_CCand RC cannot be current

driven. Pins ISENSE and AUX cannot be voltage driven.

Symbol

Voltages

V_CC

Parameter

Conditions

Min

Max

Unit

supply voltage

continuous

−0.4

+40

+3

V

V_RC

voltage on pin RC

voltage on pin RC2

V_RC2

+3

V_BRIGHTNESSvoltage on pin BRIGHTNESS

+5

V_PWMLIMIT

V_SOURCE

V_DRAIN

voltage on pin PWMLIMIT

voltage on pin SOURCE

voltage on pin DRAIN

+5

DMOS power

transistor;

+600

T

_amb= 25 °C

V_SBLEED

voltage on pin SBLEED

voltage on pin WBLEED

off-state;

T_j= 125 °C

−0.4

+600

+16

V

on-state;

V_VCC> 8.5 V;

T_j< 125 °C

V_WBLEED

off-state;

T_j< 125 °C

−0.4

+600

+12

V

on-state;

V_VCC> 8.5 V;

T_j< 125 °C

Currents

I_ISENSE

I_AUX

current on pin ISENSE

current on pin AUX

−20

−10

−2

+5

+2

mA

A

I_SOURCE

I_DRAIN

General

P_tot

current on pin SOURCE

current on pin DRAIN

−2

A

total power dissipation

storage temperature

ambient temperature

junction temperature

T_amb= 70 °C

-

1.6

W

T_stg

−55

−40

+150

+100

+150

°C

T_amb

T_j

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

Table 4.

Limiting values …continued

In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are measured

with respect to ground; positive currents ﬂow into the device; pins V_CCand RC cannot be current

driven. Pins ISENSE and AUX cannot be voltage driven.

Symbol

Parameter

Conditions

Min

Max

Unit

[1]

V_ESD

electrostatic discharge voltage

human body

model;

Pins 20, 1, 4

All other pins

−1000 +1000

−2000 +2000

V

[2]

[3]

machine model

−200

−500

+200

+500

charged device

model

[1] Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.

[2] Machine model: equivalent to discharging a 200 pF capacitor through a 0.75 µH coil and a 10 Ω series

resistor.

[3] Charged device model: equivalent to charging the IC up to 1 kV and the subsequent discharging of each

pin down to 0 V over a 1 Ω resistor.

10. Thermal characteristics

The heat sink for SSL2102 applications is provided by the Printed-Circuit Board (PCB)

copper. The SSL2102 uses thermal leads (pins 2, 3, 6, 7,16, 17, 18 and 19) for heat

transfer from the die to PCB.

Enhanced thermal lead connection may drastically reduce thermal resistance.

The following equation shows the relationship between the maximum allowable power

dissipation P and the thermal resistance from junction to ambient.

R_{th( j – a)}= (T _j(max)– T_amb) ⁄ P

Where:

R_th(j-a)= thermal resistance from junction to ambient

T_j(max)= maximum junction temperature

T_amb= ambient temperature

P = power dissipation

The thermal resistance as a function of the PCB area (Board: 0.8 mm thickness, 2 layers,

Bottom Cu coverage 90 %, Cu thickness 70 µm

(390 W/mK), Core material conductivity: 0.5 W/mK, 10 vias dia 0.3 mm) is shown in

Figure 8

SSL2102_1

Product data sheet

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11 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

014aaa812

100

Rth(j-a)

(°C/W)

80

60

40

20

(1)

(2)

(3)

0

2000

4000

6000

8000

10000

2

PCB area (mm )

(1) Top Cu coverage 20 %

(2) Top Cu coverage 50 %

(3) Top Cu coverage 100 %

Fig 8. SSL2102 core material conductivity

Table 5:

Symbol Parameter

R_th(j-a)thermal resistance from junction to ambient

Thermal characteristics

Conditions

Typ

Unit

[1]

62

KW

[1] Measured on a JEDEC test board (standard EIA/JESD 51-3) in free air with natural convection.

11. Characteristics

Table 6.

Characteristics

T_amb= 25 °C; no overtemperature; all voltages are measured with respect to ground; currents are

positive when ﬂowing into the IC and PWMLIMIT and BRIGHTNESS pins are disconnected unless

otherwise speciﬁed. Typical frequency 100 kHz.

Symbol

Supply

I_CC

Parameter

Conditions

Min

Typ

Max

Unit

supply current

normal operation;

-

1.7

2

mA

V

_DRAIN= 60 V;

_CC= 20 V

I_CC(ch)

charge supply

current

V_DRAIN> 60 V;

_CC= 0 V

-6

−4.5

-

mA

V

V_CC

supply voltage

8.5

-

40

V

V_CC(startup)

start-up supply

voltage

9.75 10.25 10.75

V_CC(UVLO)

undervoltage

lockout supply

voltage

7.9 8.2 8.5

V

SSL2102_1

Product data sheet

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12 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

Table 6.

Characteristics …continued

T_amb= 25 °C; no overtemperature; all voltages are measured with respect to ground; currents are

positive when ﬂowing into the IC and PWMLIMIT and BRIGHTNESS pins are disconnected unless

otherwise speciﬁed. Typical frequency 100 kHz.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

I_DRAIN

current on pin

DRAIN

V_DRAIN> 60 V;

no auxiliary supply

-

2.2

mA

V_DRAIN> 60 V;

with auxiliary supply

-

30

-

125

600

µA

V_DRAIN

voltage on pin

DRAIN

40

V

Pulse width modulator

δ_min

minimum duty

factor

-

0

-

%

δ_max

maximum duty

cycle

f = 100 kHz

75

SOPS

V_det(demag)

demagnetization

detection voltage

50

100

1.5

150

2.0

mV

t_{sup(xfmr_ring)}

transformer

ringing

at start of secondary

stroke

1.0

µs

suppression time

RC oscillator

V_RC(min)

minimum voltage

on pin RC

60

2.4

-

75

2.5

1

90

2.6

-

mV

V

V_RC(max)

t_ch(RC)

maximum voltage

on pin RC

charge time on pin

RC

µs

V_BRIGHTNESS

voltage on pin

BRIGHTNESS

2.5 V RC2 trip level

180 mV RC2 trip level

75 mV RC2 trip level

-

0.5

-

V

-

1.25

2.3

-

V

-

V

f_osc

oscillator

10

100

200

kHz

frequency

I_BRIGHTNESS

current on pin

BRIGHTNESS

V_BRIGHTNESS= 0 V

−20

−24

−28

µA

Bleeder

V_th(SBLEED)

threshold voltage

on pin SBLEED

46

-

52

56

-

V

V_{th(low)ISENSE}

V_{th(high)ISENSE}

R_DSon(SBLEED)

low threshold

voltage on pin

ISENSE

−250

mV

high threshold

voltage on pin

ISENSE

-

−100

-

mV

drain-source

on-state

resistance on pin

SBLEED

I

_SBLEED= 25 mA

T_j= 25 °C

140

220

170

270

200

320

Ω

T_j= 125 °C

SSL2102_1

Product data sheet

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

Table 6.

Characteristics …continued

T_amb= 25 °C; no overtemperature; all voltages are measured with respect to ground; currents are

positive when ﬂowing into the IC and PWMLIMIT and BRIGHTNESS pins are disconnected unless

otherwise speciﬁed. Typical frequency 100 kHz.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

R_DSon(WBLEED)drain-source

on-state

I

_WBLEED= 10 mA

T_j= 25 °C

250

400

310

500

350

600

Ω

resistance on pin

WBLEED

T_j= 125 °C

Duty factor regulator: pin PWMLIMIT

I_PWMLIMIT

current on pin

PWMLIMIT

−25

-

−18

µA

V

V_PWMLIMIT

voltage on pin

PWMLIMIT

maximum duty cycle =

3 V

-

3

-

minimum duty factor

threshold

0.45

V

Valley switching

[1]

(∆V/∆t)_vrec

valley recognition minimum absolute

-

100

-

V/µs

voltage change

with time

value

f_ring

ringing frequency N × V_O= 100 V

200

-

550

150

800

-

kHz

ns

t_d(vrec-swon)

valley recognition

to switch-on delay

time

Current and short circuit winding protection

V_{th(ocp)SOURCE}

overcurrent

protection

threshold voltage

on pin SOURCE

dV/dt = 0.1 V/µs

dV/dt = 0.5 V/µs

0.47 0.50

0.53

-

V

V_{th(swp)SOURCE}short-winding

protection

-

1.5

V

threshold voltage

on pin SOURCE

t_d(ocp-swoff)

delay time from

overcurrent

protection to

switch-off

-

160

350

185

450

ns

t_leb

leading edge

blanking time

250

FET output stage

I_L(DRAIN)

leakage current on V_DRAIN= 600 V

pin DRAIN

-

125

-

µA

V_BR(DRAIN)

breakdown

voltage on pin

DRAIN

T_amb= 25 °C

600

V

R_DSon

drain-source

on-state

resistance

power switch; I_SOURCE= −0.50 A

T_j= 25 °C

4.50 6.5

7.5

-

Ω

I_SOURCE= −0.20 A

T_j= 125 °C

-

9.5

SSL2102_1

Product data sheet

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

Table 6.

Characteristics …continued

T_amb= 25 °C; no overtemperature; all voltages are measured with respect to ground; currents are

positive when ﬂowing into the IC and PWMLIMIT and BRIGHTNESS pins are disconnected unless

otherwise speciﬁed. Typical frequency 100 kHz.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

t_f(DRAIN)

fall time on pin

DRAIN

input voltage: 300 V;

no external capacitor at

drain

-

75

-

ns

Temperature protection

T_otp

overtemperature

protection trip

junction temperature

150

-

160

2

170

-

°C

T_otp(hys)

overtemperature

protection trip

hysteresis

[1] Voltage change in time for valley recognition.

100

f

max

80

60

f

osc

(kHz)

40

20

f

min

0

1

2

3

V

(V)

BRIGHTNESS

014aaa664

Fig 9. Typical frequency as a function of voltage on pin BRIGHTNESS

SSL2102_1

Product data sheet

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

12

t

(µs)

on

8

4

0

1

2

3

V

(V)

PWMLIMIT

014aaa665

V_BRIGHTNESS= 3 V

Fig 10. Turn-on time as a function of voltage on pin PWMLIMIT

120

t

on

(µs)

80

40

0

1

2

3

V

(V)

PWMLIMIT

014aaa666

V_BRIGHTNESS= 1 V

Fig 11. Turn-on time as a function of voltage on pin PWMLIMIT

SSL2102_1

Product data sheet

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SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

12. Application information

L1

LED +

RGND

N

LED −

SBleed

1

DRAIN

TC

20

19

18

17

16

15

14

13

12

11

TC

2

TC

3

TC

WBleed

4

TC

VCC

5

TC

GND

6

Source

TC

GND

7

Brightness

8

Aux

RC2

9

lsense

PWMLimit

RC

10

SSL2102/SO20-W

RGND

014aaa823

Fig 12. Application example SSL2102

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

17 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

13. Package outline

SO20: plastic small outline package; 20 leads; body width 7.5 mm

SOT163-1

D

E

A

X

c

y

H

E

v

M

A

Z

20

11

Q

A

2

A

(A )

3

A

1

pin 1 index

θ

L

p

L

1

10

w

detail X

e

M

b

p

0

5

10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A

max.

(1)

UNIT

mm

A

b

c

D

E

e

H

L

Q

v

w

y

θ

1

2

3

p

E

p

Z

0.3

0.1

2.45

2.25

0.49

0.36

0.32

0.23

13.0

12.6

7.6

7.4

10.65

10.00

1.1

0.4

1.1

1.0

0.9

0.4

2.65

0.1

0.25

0.01

1.27

0.05

1.4

0.25

0.01

0.25

0.1

8^o

0^o

0.012 0.096

0.004 0.089

0.019 0.013 0.51

0.014 0.009 0.49

0.30

0.29

0.419

0.394

0.043 0.043

0.016 0.039

0.035

0.016

inches

0.055

0.01 0.004

Note

1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

JEITA

99-12-27

03-02-19

SOT163-1

075E04

MS-013

Fig 13. Package outline SOT163-1 (SO20)

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

18 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

14. Revision history

Table 7.

Revision history

Document ID

Release date

Data sheet status

Change notice

Supersedes

SSL2102_1

20090629

Product data sheet

-

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

19 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

15. Legal information

15.1 Data sheet status

Document status^[1][2]

Product status^[3]

Development

Deﬁnition

Objective [short] data sheet

This document contains data from the objective speciﬁcation for product development.

This document contains data from the preliminary speciﬁcation.

This document contains the product speciﬁcation.

Preliminary [short] data sheet Qualiﬁcation

Product [short] data sheet Production

[1]

[2]

[3]

Please consult the most recently issued document before initiating or completing a design.

The term ‘short data sheet’ is explained in section “Deﬁnitions”.

The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status

information is available on the Internet at URL http://www.nxp.com.

damage. NXP Semiconductors accepts no liability for inclusion and/or use of

NXP Semiconductors products in such equipment or applications and

therefore such inclusion and/or use is at the customer’s own risk.

15.2 Deﬁnitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modiﬁcations or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences of

use of such information.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes no

representation or warranty that such applications will be suitable for the

speciﬁed use without further testing or modiﬁcation.

Limiting values — Stress above one or more limiting values (as deﬁned in

the Absolute Maximum Ratings System of IEC 60134) may cause permanent

damage to the device. Limiting values are stress ratings only and operation of

the device at these or any other conditions above those given in the

Characteristics sections of this document is not implied. Exposure to limiting

values for extended periods may affect device reliability.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is intended

for quick reference only and should not be relied upon to contain detailed and

full information. For detailed and full information see the relevant full data

sheet, which is available on request via the local NXP Semiconductors sales

ofﬁce. In case of any inconsistency or conﬂict with the short data sheet, the

full data sheet shall prevail.

Terms and conditions of sale — NXP Semiconductors products are sold

subject to the general terms and conditions of commercial sale, as published

at http://www.nxp.com/proﬁle/terms, including those pertaining to warranty,

intellectual property rights infringement and limitation of liability, unless

explicitly otherwise agreed to in writing by NXP Semiconductors. In case of

any inconsistency or conﬂict between information in this document and such

terms and conditions, the latter will prevail.

15.3 Disclaimers

General — Information in this document is believed to be accurate and

reliable. However, NXP Semiconductors does not give any representations or

warranties, expressed or implied, as to the accuracy or completeness of such

information and shall have no liability for the consequences of use of such

information.

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or the

grant, conveyance or implication of any license under any copyrights, patents

or other industrial or intellectual property rights.

Right to make changes — NXP Semiconductors reserves the right to make

changes to information published in this document, including without

limitation speciﬁcations and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Quick reference data — The Quick reference data is an extract of the

product data given in the Limiting values and Characteristics sections of this

document, and as such is not complete, exhaustive or legally binding.

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from national authorities.

Suitability for use — NXP Semiconductors products are not designed,

authorized or warranted to be suitable for use in medical, military, aircraft,

space or life support equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

15.4 Trademarks

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

16. Contact information

For more information, please visit: http://www.nxp.com

For sales ofﬁce addresses, please send an email to: salesaddresses@nxp.com

SSL2102_1

Product data sheet

Rev. 01 — 29 June 2009

20 of 21

SSL2102

NXP Semiconductors

SMPS IC for dimmable LED lighting

17. Contents

1

2

3

4

5

6

General description . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Quick reference data . . . . . . . . . . . . . . . . . . . . . 2

Ordering information. . . . . . . . . . . . . . . . . . . . . 2

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3

7

7.1

7.2

Pinning information. . . . . . . . . . . . . . . . . . . . . . 4

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4

8

Functional description . . . . . . . . . . . . . . . . . . . 5

Start-up and UnderVoltage LockOut (UVLO) . . 5

Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Duty factor control. . . . . . . . . . . . . . . . . . . . . . . 6

Bleeder for dimming applications . . . . . . . . . . . 7

Valley switching. . . . . . . . . . . . . . . . . . . . . . . . . 7

Demagnetization. . . . . . . . . . . . . . . . . . . . . . . . 9

Overcurrent protection . . . . . . . . . . . . . . . . . . . 9

Short-winding protection. . . . . . . . . . . . . . . . . . 9

Overtemperature protection . . . . . . . . . . . . . . . 9

8.1

8.2

8.3

8.4

8.5

8.6

8.7

8.8

8.9

9

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 10

Thermal characteristics. . . . . . . . . . . . . . . . . . 11

Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . 12

Application information. . . . . . . . . . . . . . . . . . 17

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 18

Revision history. . . . . . . . . . . . . . . . . . . . . . . . 19

10

11

12

13

14

15

Legal information. . . . . . . . . . . . . . . . . . . . . . . 20

Data sheet status . . . . . . . . . . . . . . . . . . . . . . 20

Deﬁnitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

15.1

15.2

15.3

15.4

16

17

Contact information. . . . . . . . . . . . . . . . . . . . . 20

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 29 June 2009

Document identifier: SSL2102_1


型号：	SSL2102
厂家：	NXP
描述：	Mains LED driver IC for dimmable LED lighting 市电LED驱动器IC，用于可调光LED照明驱动器
文件：	总21页 (文件大小：109K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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