iML8683 Three Terminal Current Controller General Description Features The iML8683 is a Three Terminal Current Controller (TTCC) for regulating the current flowing through an LED string. The application of the iML8683 is configured in parallel with an LED string. The iML8683 can work as voltage controlled current source, current regulator, or cut-off. It is suitable for the applications adopting periodical AC voltage source. The PCB layout is also very flexible to meet various shape requirements. It is especially suitable for replacing incandescent light bulb and linear type fluorescent lamp. System - All solid state components. No electrolytic capacitor required. Compact size to minimize mechanical cost. Driver-on-board and chip-on-board available which minimize process flow and assembly cost. High PF and Low THD performance. High efficiency achieved. Flexible PCB layout style. Wide range of LED forward voltage selection. Distributed heat to several chips. TRIAC dimmable. Chip - 88V input sustaining voltage. - <3V dropout voltage for up to 150mA regulating current Typical Application Circuit Applications VAC LED1 BD AC LED lighting engine. LED light bulb. LED light tube. LED down-light and ceiling light LED flat panel light CS NC A U1 iML8683 LED2 MS1 MS2 K Pin Diagram (Top View) U2 iML8683 CS NC A Rz LED3 MS1 MS2 K Q1 iML3160 U3 iML8683 1 6 MS1 NC 2 5 MS2 A 3 4 K DFN- 2mmx2mm-6L CS NC A ZD CS CS MS1 MS1 MS2 K 5 Rectified VAC 4 1 2 3 A K MS2 SOT-89- 5L ILED t t (c) 2014 Exar Corporation 8683DOC rev 1.2 1 iML8683 Three Terminal Current Controller Ordering Information Package Type: DFN - 2mm x 2mm - 6L (Halogen Free) st Part Number Tape and Reel 1 Line Marking (Mode 0, MS1 and MS2 connected to pin K) iML8683NL-C1 iML8683NL-C1-TR i83C1 40 iML8683NL-C2 iML8683NL-C2-TR i83C2 66 iML8683NL-C3 iML8683NL-C3-TR i83C3 52 iML8683NL-D1 iML8683NL-D1-TR i83D1 80 iML8683NL-D2 iML8683NL-D2-TR i83D2 130 iML8683NL-D3 iML8683NL-D3-TR i83D3 104 iML8683NL-ADJ iML8683NL-ADJ-TR i83AD Determined by external resistor only Regulating Current (mA) Package Type: SOT - 89 - 5L (Halogen Free) st Part Number Tape and Reel 1 Line Marking (Mode 0, MS1 and MS2 connected to pin K) iML8683BP-C1 iML8683BP-C1-TR i8683C1 40 iML8683BP-C2 iML8683BP-C2-TR i8683C2 66 iML8683BP-C3 iML8683BP-C3-TR i8683C3 52 iML8683BP-D1 iML8683BP-D1-TR i8683D1 80 iML8683BP-D2 iML8683BP-D2-TR i8683D2 130 iML8683BP-D3 iML8683BP-D3-TR i8683D3 104 iML8683BP-ADJ iML8683BP-ADJ-TR i8683AD Determined by external resistor only Regulating Current (mA) Dice Part Number Regulating Current (mA) (Mode 0, MS1 and MS2 connected to pin K) iML8683BZ-C1 40 iML8683BZ-C2 66 iML8683BZ-C3 52 iML8683BZ-D1 80 iML8683BZ-D2 130 iML8683BZ-D3 104 iML8683BZ-ADJ Determined by external resistor only (c) 2014 Exar Corporation 8683DOC rev 1.2 2 iML8683 Three Terminal Current Controller Block Diagram + A Thermal Protection Logic Circuit VAK CS MS1 REXT MS2 K - IAK I-V Curve Cx / Dx Options ADJ Options IAK IAK Mode 0 IPEAK0 Mode 0 ~ Mode 3 IPEAK Mode 1 IPEAK1 IPEAK2 Mode 2 IPEAK3 Mode 3 0 0 VDROP (c) 2014 Exar Corporation VAK VDROP VAK 8683DOC rev 1.2 3 iML8683 Three Terminal Current Controller Pin Descriptions Pin Number Pin Function Pin Name DFN SOT-89 CS 1 5 Current sense pin. Connected to negative end of LED string. A 3 1 Regulating current input pin. Connected to positive end of LED string. K 4 2 Regulating current output pin. MS2 5 3 Mode selection pin 2. Floating or connecting to pin K only. MS1 6 4 Mode selection pin 1. Floating or connecting to pin K only. NC 2 - No Connection Exposed Thermal Pad Exposed thermal pad of the chip. Use this pin to enhance the power dissipation ability. The thermal conductivity will be improved if a copper foil on PCB is soldered with the thermal pad. It is recommended to connect the thermal pad to pin K. Absolute Maximum Ratings Caution: Values beyond absolute ratings can cause the device to be prematurely damaged. Absolute maximum ratings are stress ratings only and functional device operation is not guaranteed. A to K -0.3V ~ 88V CS, MS1, MS2 to K -0.3V ~ 1V Sustaining Voltage Regulating Current 150mA Maximum Operating Junction Temperature, TJ 165C Operating Temperature, Topr -40C to 110C Storage Temperature Range -55C to 150C Lead Temperature (Soldering, 10 seconds) 260C Note: 1). All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. 2). All parameters having Min/Max specifications are guaranteed. Typical values are for reference purpose only. 3). Unless otherwise noted, all tests are pulsed tests at the specified temperature, therefore: T J = TC = TA. Recommended Operating Conditions Parameter Regulating Current (with Adequate Heat *Note Sinking) *Note Input Voltage Symbol Min IAK VAK Maximum Junction Temperature TJ Operating Free-Air Temperature Range TA 3 -30 Typ Max Unit 130 mA 80 V 150 C 100 C Note: Due to thermal dissipation consideration, the maximum LED Vf in parallel should decrease with the regulating current. (c) 2014 Exar Corporation 8683DOC rev 1.2 4 iML8683 Three Terminal Current Controller Electrical Characteristics o Unless otherwise noted, typical values are @ TA = 25 C. Parameter Peak Regulating Current *Note 1,2 Symbol IPEAK0 IPEAK0/IPEAK0 Test Conditions Min Typ Max Option C1 38.4 40 41.6 Option C2 63.4 66 68.6 VAK=5V, Mode 0 Option C3 49.9 52 54.1 (MS1/ MS2 connected to K) Option D1 76.8 80 83.2 Option D2 124.8 130 135.2 Option D3 99.8 104 108.2 Unit mA Option C1/C2/C3/D1/D2/D3, Mode 0, VAK=5V 100 (MS1/ MS2 connected to K) Current Ratio of Mode Selection IPEAK1/IPEAK0 Option C1/C2/C3/D1/D2/D3, Mode 1, VAK=5V 75 80 85 (MS1 open, MS2 connected to K) *Note 1 IPEAK2/IPEAK0 Option C1/C2/C3/D1/D2/D3, Mode 2, VAK=5V % 50 55 60 32 35 38 1 2 (MS2 open, MS1 connected to K) IPEAK3/IPEAK0 Option C1/C2/C3/D1/D2/D3, Mode 3, VAK=5V (MS1/ MS2 open) Option C1/C2/C3/D1/D2/D3, Regulating Current Line *Note 3 Regulation ILR/IPEAKx Mode 1~3, VAK=5V and 40V (x=0~3) Option C1/C2/C3/D1/D2/D3, Mode 0, VAK=5V and 40V CS Pin Voltage VCS CS Pin Voltage Line *Note 4 Regulation Dropout Voltage *Note 5 Thermal Protection Trip *Note 6 Temperature Thermal Protection Mode Regulating Current (c) 2014 Exar Corporation VLR/VCS Option ADJ, Mode 0, VAK=5V, with 1K external resistor between CS and K Option ADJ, Mode 1~3, VAK=5V and 40V with 1K external resistor between CS and K Option ADJ, Mode 0, VAK=5V and 40V with 1K external resistor between CS and K VDROP Mode 0 (MS1/ MS2 connected to K) TTP When TJ is higher than TTP, the peak regulating current decreases to ITP linearly. ITP/IPEAKx (x=0~3) TJ = 175C % -4 -8 -15 0.26 0.27 0.28 V 1 2 % -8 -15 % 2.8 3.8 V -4 120 130 C 50 % 8683DOC rev 1.2 5 iML8683 Three Terminal Current Controller Note 1: For ADJ option, the regulating current is determined by an external resistor, REXT, connected between the CS pin and the K pin. The mode selection function will not change the current ratio of option ADJ. To activate the line regulation function, the chip (U3) connected in series with the LED string should be set in Mode 0 (MS1 and MS2 connected to pin K). The regulating current will be: IPEAK=0.27/REXT And the maximum regulating current of second step (ex: U2 in Mode 1) should not exceed 80% of the top level (ex: U3 in Mode 0), otherwise the circuit operation might become abnormal when OTP function is activated. It is strongly recommended to set at 75%. Note 2: The user can add an external resistor REXT between the CS pin and the K pin of U3 (Mode 0, serial connected to the LED string) to increase the regulating current of option C1, C2, C3, D1, D2 and D3, as shown in below. For U1 ~ U2 (Mode 1 ~ Mode 3, parallel connected to the LED string), adding an external resistor REXT between the CS pin and the K pin may cause abnormal operation and chip damage. For option C1/ C2/ C3, the regulating current variation IPEAK/IPEAK = 6.25/REXT. For option D1/ D2/ D3, the regulating current variation IPEAK/IPEAK = 3.13/REXT. LED Option C1 CS NC A REXT MS1 MS2 K iML8683 U3 (Mode 0) regulating current Without external With 100 external resistor resistor 40 42.5 Option C2 66 70.1 Option C3 52 55.3 Option D1 80 82.5 Option D2 132 136.1 Option D3 104 107.3 Note 3: The Regulating Current Line Regulation is defined as: For Mode 1~3: For Mode 0: ILR /IPEAKx = ILR /IPEAK0 = IAK(V -I AK =40V) AK(VAK=5V) IAK(VAK =5V) , x=1~3 IAK(VAK =40V) -IAK(VAK =5V) IAK(V AK =5V) Note 4: The CS Pin Voltage Line Regulation is defined as: For Mode 1~3: For Mode 0: VLR /VCS = VLR /VCS = VCS(VAK =40V) -VCS(VAK =5V) VCS(V AK =5V) VCS(VAK=40V)-VCS(VAK =5V) VCS(VAK =5V) Note 5: Dropout voltageVAK @ 90% x (IPEAK0 @ VAK5V) Note 6: When TJ > TTP, the peak regulating current decreases linearly to around 50% at 175C. IAK IPEAKx ITP 0 (c) 2014 Exar Corporation TTP TTSD (130C) (175C) TJ 8683DOC rev 1.2 6 iML8683 Three Terminal Current Controller Application Circuit (1) 220VAC/ 10W LED Light Engine - 3 steps, PF=0.98, THD=16% - To pass 1KV surge test, Q1 can be changed to 800V NMOS. iLED iLED VAC LED1 134V 60mA RBL 90K BD BD LED2 67V 60mA U1 iML8683ADJ (Mode 2) LED3 67V 60mA U2 iML8683ADJ MS1 MS2 K MS1 MS2 K Rz2 270K (c) 2014 Exar Corporation U3 iML8683ADJ MS1 MS2 K MS1 MS2 K C2 Option ZD 24V CS NC A CS NC A (Mode 0) R2 5.1 1A/ 600 NMOS 1A/ 600 NMOS U3 iML8683-C2 LED3 67V 60mA Q1 iML3160 Q1 iML3160 ZD 24V R1 7.5 Rz1 270K (Mode 1) Rz2 270K LED2 67V 60mA CS NC A CS NC A U2 iML8683-C2 MS1 MS2 K MS1 MS2 K Rz1 270K LED1 134V 60mA RBL 90K CS NC A CS NC A U1 iML8683-C2 VAC R3 3.9 ADJ Options 8683DOC rev 1.2 7 iML8683 Three Terminal Current Controller (2) 10W LED Light Engine - 3 steps, PF=0.98, THD=16% - To pass 1KV surge test, Q1 can be changed to 800V NMOS. iLED iLED VAC LED1 72V 120mA RBL 47K BD BD LED2 36V 120mA U1 iML8683ADJ (Mode 2) LED3 36V 120mA U2 iML8683ADJ MS1 MS2 K MS1 MS2 K Rz2 180K (c) 2014 Exar Corporation U3 iML8683ADJ MS1 MS2 K MS1 MS2 K D2 Option ZD 18V CS NC A CS NC A (Mode 0) R2 3.3 1A/ 600 NMOS 1A/ 600 NMOS U3 iML8683-D2 LED3 36V 120mA Q1 iML3160 Q1 iML3160 ZD 18V R1 4.7 Rz1 180K (Mode 1) Rz2 180K LED2 36V 120mA CS NC A CS NC A U2 iML8683-D2 MS1 MS2 K MS1 MS2 K Rz1 180K LED1 72V 120mA RBL 47K CS NC A CS NC A U1 iML8683-D2 VAC R3 2.4 ADJ Options 8683DOC rev 1.2 8 iML8683 Three Terminal Current Controller (3) 7W Low Cost LED Light Engine - 2 steps, PF=0.95, THD=28% iLED iLED RBL1 68K VAC VAC LED1 200V 50mA RBL2 68K BD Rz1 270K Rz1 180K U1 iML8683ADJ MS1 MS2 K R1 7.5 Rz2 180K 1A/ 600 NMOS MS1 MS2 K MS1 MS2 K R2 5.6 U2 iML8683ADJ CS NC A ZD 18V CS NC A U2 iML8683ADJ R1 3.9 Q1 iML3160 1A/ 600 NMOS Q1 iML3160 ZD 24V LED2 36V 90mA CS NC A MS1 MS2 K Rz2 270K BD LED2 68V 50mA CS NC A U1 iML8683ADJ LED1 108V 90mA RBL 68K R2 3.0 120VAC/ ADJ Options 220VAC/ ADJ Options (4) Low Flicker Solution VAC RBL1 BD LED1 VAC CV RBL2 CS NC A D1 80V MS1 MS2 K Rz1 U1 iML8683ADJ R1 LED2 RBL1 BD LED1 Rz1 CV RBL2 Rz2 U1 iML8683ADJ MS1 MS2 K 1A/ 600 NMOS R3 R2 MS1 MS2 K MS1 MS2 K U2 iML8683ADJ CS NC A CS NC A ZD 3-Step/ ADJ Options (c) 2014 Exar Corporation LED2 Q1 iML3160 1A/ 600 NMOS U3 iML8683ADJ R1 R2 Q1 iML3160 ZD D1 80V MS1 MS2 K LED3 CS NC A U2 iML8683ADJ CS NC A Rz2 2-Step/ ADJ Options 8683DOC rev 1.2 9 iML8683 Three Terminal Current Controller Package Information DFN- 2mmx2mm- 6L D E A A3 b 1 D1 e SYMBOLS MIN. NOM. MAX. A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 - 0.20 - b 0.20 0.30 0.35 D - 2.00 - D1 - 1.20 - E - 2.00 - E1 - 0.70 - e - 0.65 - K 0.20 - - L - 0.30 - UNIT: MILLIMETERS E1 K L A1 Footprint Suggestion X Y B A C P D JA (c) 2014 Exar Corporation SYMBOLS Footprint Dimension A 2.80 B 1.20 C 0.80 D 0.35 P 0.65 X 1.40 Y 0.70 103 C / W 8683DOC rev 1.2 10 iML8683 Three Terminal Current Controller SOT-89-5L SYMBOLS MIN. MAX. A 1.40 1.60 b 0.32 0.52 b1 0.36 0.56 c 0.35 0.44 D 4.40 4.60 D1 1.40 1.80 E 2.30 2.60 E1 3.94 4.25 e 1.50 TYP e1 2.90 3.10 L 0.90 1.10 UNIT: MILLIMETERS Footprint Suggestion D1 D D2 C B2 B A B1 D C P1 P2 M SYMBOLS Footprint Dimension A 5.20 B 4.80 B1 3.60 B2 0.25 C 1.35 D 0.70 D1 1.90 D2 1.30 M 3.70 P1 1.50 P2 3.00 45 UNIT: MILLIMETERS JA (c) 2014 Exar Corporation 127.5 C / W 8683DOC rev 1.2 11 iML8683 Three Terminal Current Controller Records of Revisions Rev. Date Page 1.0 Feb. 7, 2014 All 1.1 Mar. 6, 2014 1, 2, 3, 11 Nov. 21, 2014 3 5, 6 7, 8, 9 10, 11 12 1.2 (c) 2014 Exar Corporation Description First release. Remove package types of TO-252. Update the Block Diagram and I-V Curve. Update the TTP Range and Notes. Update the Application Circuits. Udate the Package Dimension and Footprint Suggestion. Add Records of Revision 8683DOC rev 1.2 12