SSL2101 SMPS IC for dimmable LED lighting Rev. 04 — 28 August 2009 Product data sheet 1. General description The SSL2101 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 start-up directly 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 n n n n n n n n Easy migration to existing lighting control infrastructure, triac and transistor dimmers Supports majority of available dimming solutions Valley switching efficiency is optimized by built-in dedicated circuitry Built-in demagnetization detection The IC has built-in OverTemperature Protection (OTP) Short-Winding Protection (SWP) and OverCurrent Protection (OCP) The IC has internal VCC generation that allows start-up from rectified mains voltage Natural dimming curve by logarithmic correction 3. Applications The SSL2101 is suitable for different power requirements, these include: n Retro-fit lamps, e.g. GU10, up to a maximum of 10 W n LED modules, separate power supplies, e.g. LED spots, down-lights, up to a maximum of 15 W n LED strings, e.g. retail display, up to a maximum of 15 W n Mains isolated LED drivers up to 10 W to 15 W (flyback topology) n Non mains isolate LED drivers (buck topology) with a maximum peak current of 900 mA and continuous LED current below 450 mA n LED lamps 1 W to 10 W (flyback) or 450 mA (buck) SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 4. Quick reference data Table 1: Quick reference data Symbol Parameter RDSon Conditions drain-source on-state resistance Min Typ Max Unit 4.5 6.5 7.5 Ω - 9.5 10 Ω power switch; ISOURCE = −0.50 A Tj = 25 °C Isource = −0.20 A Tj = 125 °C VCC supply voltage 8.5 - 40 V fosc oscillator frequency 10 100 200 kHz IDRAIN current on pin DRAIN VDRAIN > 60 V; no auxiliary supply - - 2.2 mA VDRAIN > 60 V; with auxiliary supply - 30 125 µA VDRAIN voltage on pin DRAIN 40 - 600 V δmin minimum duty factor - 0 - % δmax maximum duty cycle - 75 - % Tamb ambient temperature −40 - +100 °C f = 100 kHz 5. Ordering information Table 2: Ordering information Type number SSL2101T Package Name Description Version SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 2 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 6. Block diagram ISENSE SBLEED 10 WBLEED 1 2 BLEEDER VCC 3 16 SUPPLY DRAIN VALLEY 11 GND LOGIC 4, 5,13, 14, 15 AUX 100 mV Stop RC 8 OSCILLATOR 12 Low freq SOURCE Blank THERMAL SHUTDOWN BRIGHTNESS RC2 6 7 FREQUENCY REDUCTION CIRCUIT POWER - UP RESET PROTECTION LOGIC Overcurrent PWMLIMIT 9 PWM LIMIT CIRCUIT 0.5 V 1.5 V Short-winding protection 014aaa567 Fig 1. Block diagram SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 3 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 7. Pinning information 7.1 Pinning SBLEED 1 16 DRAIN WBLEED 2 15 GND VCC 3 14 GND GND 4 13 GND SSL2101 GND 5 12 SOURCE BRIGHTNESS 6 11 AUX RC2 7 10 ISENSE RC 8 9 PWMLIMIT 014aaa568 Fig 2. Pin configuration SO16 7.2 Pin description Table 3: Pin description Symbol Pin Description SBLEED 1 drain of internal strong bleeder switch WBLEED 2 drain of internal weak bleeder switch VCC 3 supply voltage GND 4 ground GND 5 ground BRIGHTNESS 6 brightness input RC2 7 setting for frequency reduction RC 8 frequency setting PWMLIMIT 9 PWM limit input ISENSE 10 current sense input for WBLEED AUX 11 Input for voltage from auxiliary winding for timing (demagnetization) SOURCE 12 source of internal power switch GND 13 ground GND 14 ground GND 15 ground DRAIN 16 drain of internal power switch; input for start-up current and valley sensing SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 4 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 8. Functional description The SSL2101 is a LED driver IC that operates directly from the rectified mains. The SSL2101 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 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. Note however the maximum VCC voltage 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 VCC drops below the VCC(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 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, it 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 Phase Width Modulated (PWM) systems with a linear sawtooth oscillator. Stable operation at low duty factors is easily realized. The frequency of the converter when VBRIGHTNESS is high can be estimated 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 8). The BRIGHTNESS input controls the frequency reduction mode. Figure 3 shows that the oscillator switches over from an RC curve with R1 in parallel with R2 to R1 only. A low BRIGHTNESS voltage will reduce the switching frequency. SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 5 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 5V STARplug OSCILLATOR 24 µA RC R1 220 kΩ R2 10 kΩ BRIGHTNESS Comparator V V C1 330 pF RC2 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. 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 kΩ. Voltage (mV) RC voltage rc_threshhold 75 mV time Fig 4. 014aaa582 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 %. SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 6 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 8.4 Bleeder for dimming applications The SSL2101 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 pin WBLEED and SBLEED is below the Vth(SBLEED) level (52 V typically). The weak bleeder switch is switched on as soon as the voltage on pin ISENSE exceeds the Vth(high)(ISENSE) level (−100 mV typically). The weak bleeder switch is switched off when the ISENSE voltage drops below the Vth(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 I1 Integrated 20 µA B1 LOW V DETECT M2 M1 Q SR −0.1 V OR −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 × π × (L p × C p) (2) where: Lp = primary self inductance Cp = parasitic capacitance on drain node SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 7 of 22 SSL2101 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 RC oscillator regulation level B 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. SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 8 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 014aaa573 40 phase (°) 20 0 −20 −40 0 200 400 600 800 f (kHz) Fig 7. Typical phase of drain ringing at switch-on (at N × Vo = 80 V) 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 SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 9 of 22 SSL2101 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 VCC and RC cannot be current driven. Pins ISENSE and AUX cannot be voltage driven. Symbol Parameter Conditions Min Max Unit VCC supply voltage continuous −0.4 +40 V VRC voltage on pin RC −0.4 +3 V VRC2 voltage on pin RC2 −0.4 +3 V −0.4 +5 V Voltages VBRIGHTNESS voltage on pin BRIGHTNESS VPWMLIMIT voltage on pin PWMLIMIT −0.4 +5 V VSOURCE voltage on pin SOURCE −0.4 +5 V VDRAIN voltage on pin DRAIN DMOS power transistor; Tamb = 25 °C −0.4 +600 V VSBLEED voltage on pin SBLEED off-state; Tj = 125 °C −0.4 +600 V on-state; VVCC > 8.5 V; Tj < 125 °C −0.4 +16 V off-state; Tj < 125 °C −0.4 +600 V on-state; VVCC > 8.5 V; Tj < 125 °C −0.4 +12 V VWBLEED voltage on pin WBLEED Currents IISENSE current on pin ISENSE −20 +5 mA IAUX current on pin AUX −10 +5 mA ISOURCE current on pin SOURCE −2 +2 A IDRAIN current on pin DRAIN −2 +2 A - 1 W General Tamb = 70 °C Ptot total power dissipation Tstg storage temperature −55 +150 °C Tamb ambient temperature −40 +100 °C Tj junction temperature −40 +150 °C SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 10 of 22 SSL2101 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 VCC and RC cannot be current driven. Pins ISENSE and AUX cannot be voltage driven. Symbol VESD Parameter electrostatic discharge voltage Conditions human body model; Min Max Unit −1000 +1000 V [1] Pins 16, 1, 2 −2000 +2000 V machine model [2] −200 +200 V charged device model [3] −500 +500 V All other pins [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 in the application with the SSL2101 is made with the copper on the Printed-Circuit Board (PCB). The SSL2101 uses thermal leads (pins 4, 5, 13, 14 and 15) for heat transfer from 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: Rth(j-a) = thermal resistance from junction to ambient Tj(max) = maximum junction temperature Tamb = 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 SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 11 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 014aaa811 120 Rth(j-a) (°C/W) 100 80 (1) 60 (2) 40 (3) 20 0 2000 4000 6000 8000 10000 PCB area (mm2) (1) Top Cu coverage 20 % (2) Top Cu coverage 50 % (3) Top Cu coverage 100 % Fig 8. SSL2101 core material conductivity Table 5: Thermal characteristics Symbol Parameter Rth(j-a) thermal resistance from junction to ambient [1] Conditions [1] Typ Unit 90 KW Measured on a JEDEC test board (standard EIA/JESD 51-3) in free air with natural convection. 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 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; VDRAIN = 60 V; VCC = 20 V - 1.7 2 mA ICC(ch) charge supply current VDRAIN > 60 V; VCC = 0 V -6 −4.5 - mA VCC supply voltage 8.5 - 40 V VCC(startup) start-up supply voltage 9.75 10.25 10.75 V VCC(UVLO) undervoltage lockout supply voltage 7.9 8.2 8.5 V Supply L SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 12 of 22 SSL2101 NXP Semiconductors SMPS 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 and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency 100 kHz. Symbol Parameter Conditions Min Typ Max Unit IDRAIN current on pin DRAIN VDRAIN > 60 V; no auxiliary supply - - 2.2 mA VDRAIN > 60 V; with auxiliary supply - 30 125 µA 40 - 600 V - 0 - % - 75 - % 50 100 150 mV 1.0 1.5 2.0 µs VDRAIN voltage on pin DRAIN Pulse width modulator δmin minimum duty factor δmax maximum duty cycle f = 100 kHz 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 - µs VBRIGHTNESS voltage on pin BRIGHTNESS fosc oscillator frequency IBRIGHTNESS current on pin BRIGHTNESS 2.5 V RC2 trip level - 0.5 - V 180 mV RC2 trip level - 1.25 - V 75 mV RC2 trip level - 2.3 - V 10 100 200 kHz −20 −24 −28 µA VBRIGHTNESS = 0 V Bleeder Vth(SBLEED) threshold voltage on pin SBLEED 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 RDSon(SBLEED) drain-source on-state resistance on pin SBLEED Tj = 25 °C 140 170 200 Ω Tj = 125 °C 220 270 320 Ω ISBLEED = 25 mA SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 13 of 22 SSL2101 NXP Semiconductors SMPS 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 and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency 100 kHz. Symbol Parameter Conditions Min Typ Max Unit RDSon(WBLEED) drain-source on-state resistance on pin WBLEED IWBLEED = 10 mA Tj = 25 °C 250 310 350 Ω Tj = 125 °C 400 500 600 Ω −25 - −18 µA maximum duty cycle = 3V - 3 - V minimum duty factor threshold - 0.45 - V - 100 - V/µs 200 550 800 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 with time minimum absolute value fring ringing frequency N × VO = 100 V td(vrec-swon) valley recognition to switch-on delay time [1] Current and short circuit winding protection Vth(ocp)SOURCE overcurrent protection threshold voltage on pin SOURCE dV/dt = 0.1 V/µs 0.47 0.50 0.53 V Vth(swp)SOURCE short-winding protection threshold voltage on pin SOURCE dV/dt = 0.1 V/µs - 1.5 - V td(ocp-swoff) delay time from overcurrent protection to switch-off dV/dt = 0.5 V/µs - 160 185 ns tleb leading edge blanking time 250 350 450 ns - - 125 µA 600 - - V 4.50 6.5 7.5 Ω - 9.5 10 Ω FET output stage IL(DRAIN) leakage current on VDRAIN = 600 V pin DRAIN VBR(DRAIN) breakdown voltage on pin DRAIN Tamb = 25 °C RDSon drain-source on-state resistance power switch; ISOURCE = −0.50 A Tj = 25 °C ISOURCE = −0.20 A Tj = 125 °C SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 14 of 22 SSL2101 NXP Semiconductors SMPS 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 and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency 100 kHz. Symbol Parameter Conditions Min Typ Max Unit tf(DRAIN) fall time on pin DRAIN input voltage: 300 V; no external capacitor at drain - 75 - ns Temperature protection Totp overtemperature protection trip junction temperature 150 160 170 °C Totp(hys) overtemperature protection trip hysteresis junction temperature - 2 - °C [1] Voltage change in time for valley recognition. 100 fmax 80 60 fosc (kHz) 40 20 fmin 0 0 1 2 3 VBRIGHTNESS (V) 014aaa664 Fig 9. Typical frequency as a function of voltage on pin BRIGHTNESS SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 15 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 12 ton (µs) 8 4 0 0 1 2 3 VPWMLIMIT (V) 014aaa665 VBRIGHTNESS = 3 V Fig 10. Turn-on time as a function of voltage on pin PWMLIMIT 120 ton (µs) 80 40 0 0 1 2 VPWMLIMIT (V) 3 014aaa666 VBRIGHTNESS = 1 V Fig 11. Turn-on time as a function of voltage on pin PWMLIMIT SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 16 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 12. Application information MAINS VCC VCC WBLEED VCC DRAIN GND RC SBLEED TLM SRC SSL2101 AUX RC2 VCC ISENSE BRIGHTNESS PWMLIMIT Dim range 014aaa569 Fig 12. Buck configuration for SSL2101 SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 17 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting Mains WBLEED VCC DRAIN GND RC SBLEED SRC SSL2101 AUX RC2 ISENSE BRIGHTNESS PWMLIMIT 014aaa570 Precision current Fig 13. Flyback configuration for SSL2101 Further application information can be found in the SSL2101 application notes. SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 18 of 22 SSL2101 NXP Semiconductors SMPS IC for dimmable LED lighting 13. Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 D E A X c y HE v M A Z 16 9 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 8 e 0 detail X w M bp 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 10.0 9.8 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 0.39 0.014 0.0075 0.38 0.039 0.016 0.028 0.020 inches 0.010 0.057 0.069 0.004 0.049 0.16 0.15 0.05 0.244 0.041 0.228 0.01 0.01 0.028 0.004 0.012 θ o 8 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 SOT109-1 076E07 MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Fig 14. Package outline SOT109-1 (SO16) SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 19 of 22 SSL2101 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 SSL2101_4 20090828 Product data sheet - SSL2101_3 Modifications: • Section 4 “Quick reference data” updated. SSL2101_3 20090525 Product data sheet - SSL2101_2 SSL2101_2 20090511 Preliminary data sheet - SSL2101_1 SSL2101_1 20090109 Preliminary data sheet - - SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 20 of 22 SSL2101 NXP Semiconductors SMPS 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. 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. 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. 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 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. 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. 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. 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. 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. 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. 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] SSL2101_4 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 04 — 28 August 2009 21 of 22 SSL2101 NXP Semiconductors SMPS 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 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 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 10 Thermal characteristics. . . . . . . . . . . . . . . . . . 11 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 12 Application information. . . . . . . . . . . . . . . . . . 17 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 19 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 20 Legal information. . . . . . . . . . . . . . . . . . . . . . . 21 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 21 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Contact information. . . . . . . . . . . . . . . . . . . . . 21 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 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. 2009. 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: 28 August 2009 Document identifier: SSL2101_4