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. NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 4. Quick reference data Table 1. Symbol VCC fosc IDRAIN min max Tamb [1] Quick reference data Parameter supply voltage oscillator frequency current on pin DRAIN minimum duty factor maximum duty cycle ambient temperature PWMLIMIT= 3 V VDRAIN > 60 V; with auxiliary supply Conditions VDRAIN  60 V [1] Min 12 10 40 Typ 20 100 30 0 75 - Max 28 130 125 +100 Unit V kHz A   C VCC = 20 V minimum to meet all characteristics. 5. Ordering information Table 2. Ordering information Package Name SSL2103T SO14 Description plastic small outline package; 14 leads; body width 3.9 mm Version SOT108-1 Type number SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 2 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 6. Block diagram SB_DRV ISENSE 9 1 BLEEDER VCC 3 SUPPLY 13 DRAIN WB_DRV 2 HVDET 14 VALLEY 10 GND 4 LOGIC 100 mV AUX 12 Stop RC 7 OSCILLATOR Low freq THERMAL SHUTDOWN PROTECTION LOGIC BRIGHTNESS RC2 5 6 FREQUENCY REDUCTION CIRCUIT POWER - UP RESET 0.5 V PWR_DRV Blank 11 SOURCE 1.5 V PWMLIMIT 8 PWM LIMIT CIRCUIT Overcurrent Short-winding protection SSL2103 001aam651 Fig 1. Block diagram SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 3 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 7. Pinning information 7.1 Pinning SB_DRV WB_DRV VCC GND BRIGHTNESS RC2 RC 1 2 3 4 5 6 7 001aam652 14 HVDET 13 DRAIN 12 PWR_DRV SSL2103 11 SOURCE 10 AUX 9 8 ISENSE PWMLIMIT Fig 2. Pin configuration SO14 7.2 Pin description Table 3. Symbol SB_DRV WB_DRV VCC GND BRIGHTNESS RC2 RC PWMLIMIT ISENSE AUX SOURCE PWR_DRV DRAIN HVDET Pin description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Description strong bleeder switch drive weak bleeder switch drive supply voltage ground brightness input setting for frequency reduction frequency setting PWM limit input current sense input for WBLEED input for voltage from auxiliary winding for timing (demagnetization) current sense input of external power switch power switch drive drain of external power switch; input for start-up current and valley sensing input for high voltage sensing SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 4 of 21 NXP Semiconductors SSL2103 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 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 5 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting OSCILLATOR RC 5V 24 μA R2 10 kΩ C1 330 pF R1 220 kΩ Comparator RC2 BRIGHTNESS 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 014aab108 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 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 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 6 of 21 NXP Semiconductors SSL2103 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 WB_DRV Q SR B1 LOW V DETECT SB_DRV −0.1 V OR −0.25 V ISENSE GND 001aam658 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     Lp  Cp  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. (2) SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 7 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting primary stroke secondary stroke secondary ringing drain valley secondary stroke RC oscillator A regulation level B 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. 40 phase (°) 20 014aab111 0 −20 −40 0 200 400 600 f (kHz) 800 Fig 7. Typical phase of drain ringing at switch-on (at N  Vo = 80 V) SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 8 of 21 NXP Semiconductors SSL2103 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 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. SSL2103 Product data sheet Rev. 2 — 25 November 2010 9 of 21 NXP Semiconductors SSL2103 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 Voltages VCC VRC VRC2 VBRIGHTNESS VPWMLIMIT VSOURCE VDRAIN VHVDET Currents IISENSE IAUX ISB_DRV IWB_DRV General Ptot Tstg Tamb Tj VESD total power dissipation storage temperature ambient temperature junction temperature electrostatic discharge voltage human body model; Pins 13 and 14 All other pins charged device model [1] [2] [3] [4] Pins VCC and RC cannot be current driven. Pins ISENSE and AUX cannot be voltage driven. Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor. 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. [4] [3] Parameter supply voltage voltage on pin RC voltage on pin RC2 voltage on pin BRIGHTNESS voltage on pin PWMLIMIT voltage on pin SOURCE voltage on pin DRAIN voltage on pin HVDET current on pin ISENSE current on pin AUX current on pin SB_DRV current on pin WB_DRV Conditions continuous [1] [1] Min 0.4 0.4 0.4 0.4 0.4 0.4 Max +28 +3 +3 +5 +5 +5 +600 +600 +5 +5 +3.6 +3.6 Unit V V V V V V V V mA mA mA mA mW C C C V V V Tamb = 25 C Tamb = 25 C [2] [2] 0.4 0.4 20 10 Tamb = 70 C 55 40 40 1000 2000 500 250 +150 +100 +150 +1000 +2000 +500 10. Thermal characteristics Table 5. Symbol Rth(j-a) j-top Thermal characteristics Parameter thermal resistance from junction to ambient thermal characterization parameter from junction to top Conditions in free air, on JESD51-3 board in free air, on JESD51-3 board Typ 123 7 Unit K/W K/W SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 10 of 21 NXP Semiconductors SSL2103 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 Supply ICC ICC(ch) VCC VCC(startup) VCC(UVLO) IDRAIN VDRAIN min max SOPS Vdet(demag) tsup(xfmr_ring) RC oscillator VRC(min) VRC(max) tch(RC) fosc IBRIGHTNESS Driver bleeder Vth(HVDET) Vth(low)ISENSE Vth(high)ISENSE ISB_DRV IWB_DRV VSB_DRV threshold voltage on pin HVDET low threshold voltage on pin ISENSE high threshold voltage on pin ISENSE current on pin SB_DRV current on pin WB_DRV voltage on pin SB_DRV VSB_DRV  9 V VWB_DRV  9 V ISB_DRV = 0 ISB_DRV = 2.5 mA during VCC start-up; ISB_DRV = 2.5 mA VWB_DRV voltage on pin WB_DRV IWB_DRV = 0 IWB_DRV = 2.5 mA SSL2103 All information provided in this document is subject to legal disclaimers. Parameter supply current charge supply current supply voltage start-up supply voltage undervoltage lockout supply voltage current on pin DRAIN voltage on pin DRAIN minimum duty factor maximum duty cycle demagnetization detection voltage transformer ringing suppression time minimum voltage on pin RC maximum voltage on pin RC charge time on pin RC oscillator frequency current on pin BRIGHTNESS Conditions normal operation; bleeders disconnected; VDRAIN = 60 V; VDRAIN  60 V; VCC = 0 V VDRAIN  60 V [1] Min 6 12 - Typ 1.8 4.5 20 8.2 30 0 75 100 1.5 Max Unit 28 125 600 150 2.0 mA mA V V V A V   mV s 10.25 - VDRAIN  60 V; with auxiliary supply 40 - Pulse width modulator PWMLIMIT= 3 V 50 at start of secondary stroke 1.0 60 2.4 10 VBRIGHTNESS = 0 V 20 46 10 [2] 75 2.5 1 100 24 52 250 100 3.2 3.2 - 90 2.6 130 28 56 3.6 3.6 12 12 - mV V s kHz A V mV mV mA mA V V V V V 5.5 10 © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 11 of 21 NXP Semiconductors SSL2103 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 IPWMLIMIT VPWMLIMIT Parameter current on pin PWMLIMIT voltage on pin PWMLIMIT maximum duty cycle threshold VBRIGHTNESS = 3 V minimum duty cycle threshold VBRIGHTNESS = 3 V Valley switching (V/t)vrec fring td(vrec-swon) valley recognition voltage change minimum absolute value with time ringing frequency valley recognition to switch-on delay time overcurrent protection threshold voltage on pin SOURCE dV/dt = 0.1 V/s N  VO = 100 V [3] Conditions Min 25 - Typ 2.6 0.45 Max Unit 18 A V V Duty factor regulator: pin PWMLIMIT 200 - 100 500 150 800 - V/s kHz ns Current and short circuit winding protection Vth(ocp)SOURCE Vth(swp)SOURCE td(ocp-swoff) tleb VO(PWR_DRV) tr(PWR_DRV) 0.46 0.50 250 With maximum input capacitance 4.7 nF on pin PWR_DRV; VCC = 20 V With maximum input capacitance 4.7 nF on pin PWR_DRV; VCC = 20 V junction temperature junction temperature 1.5 160 350 12 210 0.53 V 185 450 VCC V ns ns V ns short-winding protection threshold dV/dt = 0.1 V/s voltage on pin SOURCE delay time from overcurrent protection to switch-off leading edge blanking time output Voltage on pin PWR_DRV rise time on pin PWR_DRV dV/dt = 0.5 V/s FET driver output stage tf(PWR_DRV) fall time on pin PWR_DRV - 210 - ns Temperature protection Totp Totp(hys) overtemperature protection threshold overtemperature protection trip hysteresis 150 160 7 170 C C [1] [2] [3] VCC = 20 V minimum to meet all characteristics. SB_DRV is active during VCC start-up. Voltage change in time for valley recognition. SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 12 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 100 fosc (kHz) 80 fmax 014aab112 60 40 20 fmin 0 0 1 2 VBRIGHTNESS (V) 3 Fig 8. Typical frequency as a function of voltage on pin BRIGHTNESS (with RC value given in Figure 3) 12 ton (μs) 8 014aab113 4 0 0 1 2 VPWMLIMIT (V) 3 VBRIGHTNESS = 3 V Fig 9. Turn-on time as a function of voltage on pin PWMLIMIT (with RC value given in Figure 3) SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 13 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 120 ton (μs) 80 014aab114 40 0 0 1 2 VPWMLIMIT (V) 3 VBRIGHTNESS = 1 V Fig 10. Turn-on time as a function of voltage on pin PWMLIMIT (with RC value given in Figure 3) SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 14 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 12. Application information MAINS VCC VCC WB_DRV VCC GND RC RC2 BRIGHTNESS PWMLIMIT SB_DRV HVDET DRAIN SSL2103 PWR_DRV SOURCE AUX ISENSE TLM VCC Dim range 001aam653 Fig 11. Buck configuration for SSL2103 SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 15 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting MAINS WB_DRV VCC GND RC RC2 BRIGHTNESS PWMLIMIT SB_DRV HVDET DRAIN 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 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 16 of 21 NXP Semiconductors SSL2103 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 vMA Z 14 8 Q A2 A1 pin 1 index (A 3) θ Lp L A 1 7 e bp wM detail X 0 2.5 scale 5 mm DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm A max. 1.75 A1 0.25 0.10 A2 1.45 1.25 A3 0.25 0.01 bp 0.49 0.36 c 0.25 0.19 D (1) 8.75 8.55 E (1) 4.0 3.8 0.16 0.15 e 1.27 0.05 HE 6.2 5.8 L 1.05 Lp 1.0 0.4 Q 0.7 0.6 0.028 0.024 v 0.25 0.01 w 0.25 0.01 y 0.1 Z (1) 0.7 0.3 θ 8o o 0 0.010 0.057 inches 0.069 0.004 0.049 0.019 0.0100 0.35 0.014 0.0075 0.34 0.244 0.039 0.041 0.228 0.016 0.028 0.004 0.012 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. OUTLINE VERSION SOT108-1 REFERENCES IEC 076E06 JEDEC MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Fig 13. Package outline SOT108-1 (SO14) SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 17 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 14. Revision history Table 7. Revision history Release date 20101125 Data sheet status Product data sheet Change notice Supersedes SSL2103 v.1 Document ID SSL2103 v.2 Modifications: SSL2103 v.1 • • Status changed from Preliminary to Product. Various changes to content. Preliminary data sheet - 20101011 SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 18 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 15. Legal information 15.1 Data sheet status Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet [1] [2] [3] Product status[3] Development Qualification Production Definition 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. 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. 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. 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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. 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. 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. © NXP B.V. 2010. All rights reserved. 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. 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This document supersedes and replaces all information supplied prior to the publication hereof. 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 SSL2103 All information provided in this document is subject to legal disclaimers. Product data sheet Rev. 2 — 25 November 2010 19 of 21 NXP Semiconductors SSL2103 SMPS controller IC for dimmable LED lighting 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. 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 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 SSL2103 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 25 November 2010 20 of 21 NXP Semiconductors SSL2103 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: salesaddresses@nxp.com Date of release: 25 November 2010 Document identifier: SSL2103