PHILIPS SSL2103

SSL2103
SMPS controller IC for dimmable LED lighting
Rev. 2 — 25 November 2010
Product data sheet
1. General description
SSL2103 is a Switched Mode Power Supply (SMPS) controller IC designed for LED
lighting applications. It is an extension of the NXP SSL2101/SSL2102 product platform,
allowing easy design of derivative applications.
When used in combination with a phase cut dimmer connected directly to a rectified
mains, it provides dimmability to the application.
In dimmer applications, integrated dedicated circuitry optimizes the dimming curve.
• SSL2101: fully integrated LED driver for lamps up to 10 W
• SSL2102: fully integrated LED driver for lamps up to 25 W
• SSL2103: gives the application designer flexibility permitting the:
– control of an external power switch to allow the IC to provide any power
– control of external bleeder transistors to provide extended dimmer interoperability
The device includes a circuit that allows start-up directly from the rectified mains voltage.
2. Features and benefits
 Easy migration to existing lighting control infrastructures, TRIAC and transistor
dimmers
 Compatible with most dimming solutions
 Optimized efficiency with valley switching managed by built-in circuitry
 Built-in demagnetization detection
 Built-in OverTemperature Protection (OTP)
 Short-Winding Protection (SWP) and OverCurrent Protection (OCP)
 Internal VCC generation allowing start-up from rectified mains voltage
 Natural dimming curve by logarithmic correction, optimized for human eye response,
down to 1 %
3. Applications
The SSL2103 is suitable for various power requirements including:
 Retro-fit lamps
 LED modules such as LED spots and down-lights
 LED strings suitable for retail displays etc.
SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
4. Quick reference data
Table 1.
Quick reference data
Symbol
Parameter
Conditions
VCC
supply voltage
VDRAIN  60 V
fosc
oscillator frequency
IDRAIN
current on pin DRAIN
min
minimum duty factor
max
maximum duty cycle
Tamb
ambient temperature
[1]
[1]
VDRAIN > 60 V; with auxiliary supply
PWMLIMIT= 3 V
Min
Typ
Max
Unit
12
20
28
V
10
100
130
kHz
-
30
125
A
-
0
-

-
75
-

40
-
+100
C
VCC = 20 V minimum to meet all characteristics.
5. Ordering information
Table 2.
Ordering information
Type number
Package
Name
Description
Version
SSL2103T
SO14
plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
SSL2103
Product data sheet
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Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
2 of 21
SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
6. Block diagram
SB_DRV
ISENSE
9
WB_DRV
1
HVDET
2
14
BLEEDER
VCC
3
13
SUPPLY
DRAIN
VALLEY
10
GND
4
LOGIC
AUX
100 mV
12
PWR_DRV
Stop
RC
7
OSCILLATOR
Low freq
Blank
THERMAL
SHUTDOWN
11
PROTECTION
LOGIC
BRIGHTNESS
RC2
5
6
FREQUENCY
REDUCTION
CIRCUIT
POWER - UP
RESET
SOURCE
0.5 V
1.5 V
PWMLIMIT
8
PWM
LIMIT
CIRCUIT
Overcurrent
Short-winding protection
SSL2103
001aam651
Fig 1.
Block diagram
SSL2103
Product data sheet
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
7. Pinning information
7.1 Pinning
SB_DRV
1
14 HVDET
WB_DRV
2
13 DRAIN
VCC
3
12 PWR_DRV
GND
4
BRIGHTNESS
5
RC2
6
RC
7
SSL2103
11 SOURCE
10 AUX
9
ISENSE
8
PWMLIMIT
001aam652
Fig 2.
Pin configuration SO14
7.2 Pin description
SSL2103
Product data sheet
Table 3.
Pin description
Symbol
Pin
Description
SB_DRV
1
strong bleeder switch drive
WB_DRV
2
weak bleeder switch drive
VCC
3
supply voltage
GND
4
ground
BRIGHTNESS
5
brightness input
RC2
6
setting for frequency reduction
RC
7
frequency setting
PWMLIMIT
8
PWM limit input
ISENSE
9
current sense input for WBLEED
AUX
10
input for voltage from auxiliary winding for timing (demagnetization)
SOURCE
11
current sense input of external power switch
PWR_DRV
12
power switch drive
DRAIN
13
drain of external power switch; input for start-up current and valley sensing
HVDET
14
input for high voltage sensing
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
8. Functional description
The SSL2103 is a LED driver IC that operates directly from the rectified mains. The
SSL2103 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 Under Voltage Lock Out (UVLO)
Initially, the IC is self-supplying from the rectified mains voltage. The IC starts switching as
soon as the voltage on pin VCC passes the VCC(startup) level. The supply can be taken over
by the auxiliary winding of the transformer as soon as VCC is 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 VCC voltage rating of the IC must be considered.
8.2 Oscillator
An oscillator inside the IC provides the timing for the switching converter logic.
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 VRC(max) level and, starting
from a new primary stroke, discharges to the VRC(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 achieved. The
frequency of the converter when VBRIGHTNESS is high can be calculated using Equation 1:
1
1
RC = -------   -------- – t ch arg e

3.5  f osc
(1)
R equals the parallel resistance of both oscillator resistors. C is the capacitor connected at
the RC pin (pin 7).
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.
SSL2103
Product data sheet
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Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
RC
OSCILLATOR
R2
10 kΩ
5V
Comparator
24 μA
BRIGHTNESS
C1
330 pF
R1
220 kΩ
RC2
rc_threshold
V
V
001aam657
Fig 3.
Brightness control block
A typical RC waveform is shown 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. Due to leakage current, the value of the
resistor connected between the RC pin and the ground should be limited to a maximum of
220 k.
Voltage
(mV)
RC voltage
rc_threshold
75 mV
time
Fig 4.
014aab108
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 external 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 .
8.4 Bleeder for dimming applications
The SSL2103 IC contains some circuitry intended for mains dimmer compatibility. This
circuitry can drive two external current sinks, 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.
SSL2103
Product data sheet
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Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
The SB_DRV output is activated when the maximum voltage on pin HVDET is below the
Vth(SBLEED) level (52 V typically). The WB_DRV output is activated as soon as the voltage
on pin ISENSE exceeds the Vth(high)(ISENSE) level (100 mV typically). The WB_DRV
output is deactivated when the ISENSE voltage drops below the Vth(low)(ISENSE) level
(250 mV typically). The WB_DRV output is also deactivated when the strong bleeder
switch is switched on. See Figure 5.
HVDET
INTEGRATED
B1
WB_DRV
Q
SR
LOW V DETECT
SB_DRV
−0.1 V
OR
−0.25 V
ISENSE
Fig 5.
GND
001aam658
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     Lp  Cp 
(2)
where:
Lp = primary self inductance
Cp = parasitic capacitance on drain node
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.
SSL2103
Product data sheet
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© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
primary
stroke
secondary
stroke
secondary
ringing
drain
valley
secondary
stroke
A
RC
oscillator
B
regulation level
014aab110
A: Start of new cycle with valley switching.
B: Start of new cycle in a classic 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 130 kHz, the next primary stroke is started
at 33 before the valley. The switch-on losses are still reduced significantly.
014aab111
40
phase
(°)
20
0
−20
−40
0
200
400
600
800
f (kHz)
Fig 7.
SSL2103
Product data sheet
Typical phase of drain ringing at switch-on (at N  Vo = 80 V)
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
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 tsup(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 RSENSE
to measure the current. The circuit is activated after the leading edge blanking time tleb.
The protection circuit limits the source voltage over the RSENSE1 resistor to Vth(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
Vth(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.
RSENSE is the resistor between the SOURCE pin and GND
SSL2103
Product data sheet
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SSL2103
NXP Semiconductors
SMPS controller 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.
Symbol
Parameter
Conditions
supply voltage
continuous
Min
Max
Unit
[1]
0.4
+28
V
[1]
0.4
+3
V
Voltages
VCC
VRC
voltage on pin RC
VRC2
voltage on pin RC2
0.4
+3
V
VBRIGHTNESS
voltage on pin BRIGHTNESS
0.4
+5
V
VPWMLIMIT
voltage on pin PWMLIMIT
0.4
+5
V
VSOURCE
voltage on pin SOURCE
0.4
+5
V
VDRAIN
voltage on pin DRAIN
Tamb = 25 C
0.4
+600
V
VHVDET
voltage on pin HVDET
Tamb = 25 C
0.4
+600
V
Currents
current on pin ISENSE
[2]
20
+5
mA
IAUX
current on pin AUX
[2]
10
+5
mA
ISB_DRV
current on pin SB_DRV
+3.6
mA
IWB_DRV
current on pin WB_DRV
+3.6
mA
-
250
mW
IISENSE
General
Ptot
total power dissipation
Tamb = 70 C
Tstg
storage temperature
55
+150
C
Tamb
ambient temperature
40
+100
C
Tj
junction temperature
40
+150
C
electrostatic discharge voltage
VESD
human body model;
[3]
Pins 13 and 14
1000
+1000
V
All other pins
2000
+2000
V
500
+500
V
charged device model
[4]
[1]
Pins VCC and RC cannot be current driven.
[2]
Pins ISENSE and AUX cannot be voltage driven.
[3]
Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor.
[4]
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 
resistor.
10. Thermal characteristics
Table 5.
Thermal characteristics
Symbol
Parameter
Conditions
Typ
Unit
Rth(j-a)
thermal resistance from junction to ambient
in free air, on JESD51-3 board
123
K/W
j-top
thermal characterization parameter from junction to top
in free air, on JESD51-3 board
7
K/W
SSL2103
Product data sheet
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© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
11. Characteristics
Table 6.
Characteristics
Tamb = 25 C; no overtemperature; all voltages are measured with respect to ground; currents are positive when flowing into
the IC; VCC = 20 V and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency
100 kHz.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
ICC
supply current
normal operation; bleeders
disconnected; VDRAIN = 60 V;
-
1.8
-
Supply
ICC(ch)
charge supply current
VDRAIN  60 V; VCC = 0 V
VCC
supply voltage
VDRAIN  60 V
VCC(startup)
mA
6
4.5
-
mA
12
20
28
V
start-up supply voltage
-
10.25 -
V
VCC(UVLO)
undervoltage lockout supply
voltage
-
8.2
-
V
IDRAIN
current on pin DRAIN
-
30
125
A
VDRAIN
voltage on pin DRAIN
40
-
600
V
-
0
-

-
75
-

50
100
150
mV
1.0
1.5
2.0
s
[1]
VDRAIN  60 V; with auxiliary supply
Pulse width modulator
min
minimum duty factor
max
maximum duty cycle
PWMLIMIT= 3 V
SOPS
Vdet(demag)
demagnetization detection
voltage
tsup(xfmr_ring)
transformer ringing suppression
time
at start of secondary stroke
RC oscillator
VRC(min)
minimum voltage on pin RC
60
75
90
mV
VRC(max)
maximum voltage on pin RC
2.4
2.5
2.6
V
tch(RC)
charge time on pin RC
-
1
-
s
fosc
oscillator frequency
10
100
130
kHz
IBRIGHTNESS
current on pin BRIGHTNESS
20
24
28
A
VBRIGHTNESS = 0 V
Driver bleeder
Vth(HVDET)
threshold voltage on pin HVDET
46
52
56
V
Vth(low)ISENSE
low threshold voltage on pin
ISENSE
-
250
-
mV
Vth(high)ISENSE
high threshold voltage on pin
ISENSE
-
100
-
mV
ISB_DRV
current on pin SB_DRV
VSB_DRV  9 V
-
3.2
3.6
mA
IWB_DRV
current on pin WB_DRV
VWB_DRV  9 V
-
3.2
3.6
mA
VSB_DRV
voltage on pin SB_DRV
ISB_DRV = 0
-
-
12
V
10
-
-
V
5.5
-
-
V
IWB_DRV = 0
-
-
12
V
IWB_DRV = 2.5 mA
10
-
-
V
ISB_DRV = 2.5 mA
during VCC start-up;
ISB_DRV = 2.5 mA
VWB_DRV
SSL2103
Product data sheet
voltage on pin WB_DRV
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Rev. 2 — 25 November 2010
[2]
© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
Table 6.
Characteristics …continued
Tamb = 25 C; no overtemperature; all voltages are measured with respect to ground; currents are positive when flowing into
the IC; VCC = 20 V and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency
100 kHz.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
25
-
18
A
maximum duty cycle threshold
VBRIGHTNESS = 3 V
-
2.6
-
V
minimum duty cycle threshold
VBRIGHTNESS = 3 V
-
0.45
-
V
-
100
-
V/s
200
500
800
kHz
-
150
-
ns
Duty factor regulator: pin PWMLIMIT
IPWMLIMIT
current on pin PWMLIMIT
VPWMLIMIT
voltage on pin PWMLIMIT
Valley switching
(V/t)vrec
valley recognition voltage change minimum absolute value
with time
fring
ringing frequency
td(vrec-swon)
valley recognition to switch-on
delay time
N  VO = 100 V
[3]
Current and short circuit winding protection
Vth(ocp)SOURCE
overcurrent protection threshold
voltage on pin SOURCE
Vth(swp)SOURCE
dV/dt = 0.1 V/s
0.46 0.50
0.53 V
short-winding protection threshold dV/dt = 0.1 V/s
voltage on pin SOURCE
-
1.5
-
V
td(ocp-swoff)
delay time from overcurrent
protection to switch-off
-
160
185
ns
tleb
leading edge blanking time
250
350
450
ns
-
12
VCC
V
dV/dt = 0.5 V/s
FET driver output stage
VO(PWR_DRV)
output Voltage on pin PWR_DRV
tr(PWR_DRV)
rise time on pin PWR_DRV
With maximum input capacitance
4.7 nF on pin PWR_DRV;
VCC = 20 V
-
210
-
ns
tf(PWR_DRV)
fall time on pin PWR_DRV
With maximum input capacitance
4.7 nF on pin PWR_DRV;
VCC = 20 V
-
210
-
ns
Temperature protection
Totp
overtemperature protection
threshold
junction temperature
150
160
170
C
Totp(hys)
overtemperature protection trip
hysteresis
junction temperature
-
7
-
C
[1]
VCC = 20 V minimum to meet all characteristics.
[2]
SB_DRV is active during VCC start-up.
[3]
Voltage change in time for valley recognition.
SSL2103
Product data sheet
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Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
014aab112
100
fosc
(kHz)
fmax
80
60
40
20
fmin
0
0
1
2
3
VBRIGHTNESS (V)
Fig 8.
Typical frequency as a function of voltage on pin BRIGHTNESS (with RC value
given in Figure 3)
014aab113
12
ton
(μs)
8
4
0
0
1
2
3
VPWMLIMIT (V)
VBRIGHTNESS = 3 V
Fig 9.
SSL2103
Product data sheet
Turn-on time as a function of voltage on pin PWMLIMIT (with RC value given in
Figure 3)
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© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
014aab114
120
ton
(μs)
80
40
0
0
1
2
3
VPWMLIMIT (V)
VBRIGHTNESS = 1 V
Fig 10. Turn-on time as a function of voltage on pin PWMLIMIT (with RC value given in
Figure 3)
SSL2103
Product data sheet
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Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
12. Application information
MAINS
VCC
VCC
SB_DRV
WB_DRV
VCC
HVDET
GND
DRAIN
RC
RC2
BRIGHTNESS
PWMLIMIT
SSL2103
PWR_DRV
SOURCE
AUX
TLM
VCC
ISENSE
Dim range
001aam653
Fig 11. Buck configuration for SSL2103
SSL2103
Product data sheet
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
MAINS
SB_DRV
WB_DRV
VCC
HVDET
GND
DRAIN
RC
RC2
BRIGHTNESS
PWMLIMIT
SSL2103
PWR_DRV
SOURCE
AUX
ISENSE
Precision current
001aam654
Fig 12. Flyback configuration for SSL2103
Further application information can be found in the SSL2103 application notes.
SSL2103
Product data sheet
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Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
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SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
13. Package outline
SO14: plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
D
E
A
X
c
y
HE
v M A
Z
8
14
Q
A2
A
(A 3)
A1
pin 1 index
θ
Lp
1
L
7
e
detail X
w M
bp
0
2.5
5 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
HE
L
Lp
Q
v
w
y
Z (1)
mm
1.75
0.25
0.10
1.45
1.25
0.25
0.49
0.36
0.25
0.19
8.75
8.55
4.0
3.8
1.27
6.2
5.8
1.05
1.0
0.4
0.7
0.6
0.25
0.25
0.1
0.7
0.3
0.01
0.019 0.0100 0.35
0.014 0.0075 0.34
0.16
0.15
0.010 0.057
inches 0.069
0.004 0.049
0.05
0.244
0.039
0.041
0.228
0.016
0.028
0.024
0.01
0.01
0.028
0.004
0.012
θ
8o
o
0
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT108-1
076E06
MS-012
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
99-12-27
03-02-19
Fig 13. Package outline SOT108-1 (SO14)
SSL2103
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
17 of 21
SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
14. Revision history
Table 7.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
SSL2103 v.2
20101125
Product data sheet
-
SSL2103 v.1
Modifications:
SSL2103 v.1
SSL2103
Product data sheet
•
•
Status changed from Preliminary to Product.
Various changes to content.
20101011
Preliminary data sheet
-
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 November 2010
-
© NXP B.V. 2010. All rights reserved.
18 of 21
SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
15. Legal information
15.1 Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
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.
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.
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.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
15.3 Disclaimers
Limited warranty and liability — 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.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
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.
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.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial 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, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors products by customer.
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.
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.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
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.
SSL2103
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
19 of 21
SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
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.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. NXP
Semiconductors accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
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: [email protected]
SSL2103
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 November 2010
© NXP B.V. 2010. All rights reserved.
20 of 21
SSL2103
NXP Semiconductors
SMPS controller IC for dimmable LED lighting
17. Contents
1
2
3
4
5
6
7
7.1
7.2
8
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
9
10
11
12
13
14
15
15.1
15.2
15.3
15.4
16
17
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 5
Start-up and Under Voltage Lock Out (UVLO) . 5
Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Duty factor control . . . . . . . . . . . . . . . . . . . . . . 6
Bleeder for dimming applications . . . . . . . . . . . 6
Valley switching . . . . . . . . . . . . . . . . . . . . . . . . 7
Demagnetization. . . . . . . . . . . . . . . . . . . . . . . . 9
Overcurrent protection . . . . . . . . . . . . . . . . . . . 9
Short-winding protection . . . . . . . . . . . . . . . . . . 9
Overtemperature protection . . . . . . . . . . . . . . . 9
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal characteristics . . . . . . . . . . . . . . . . . 10
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 11
Application information. . . . . . . . . . . . . . . . . . 15
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 17
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 18
Legal information. . . . . . . . . . . . . . . . . . . . . . . 19
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 19
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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’.
© NXP B.V. 2010.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 25 November 2010
Document identifier: SSL2103