SM8143A EL Driver OVERVIEW The SM8143A is a transformer-less electroluminescent (EL) driver IC, capable of driving displays up to 80cm2 (SM8143AV) or 70cm2 (SM8143AD) in size. It is a high-efficiency driver that features revised coil switching transistor ON resistance and output circuit configuration to reduce loss. The EL drive frequency and coil drive frequency can be controlled independently, making the driver circuit optimizable to match application requirements. A microcontroller interface pin (ENA) is provided, which can be used to control the EL driver ON/OFF function. FEATURES ■ ■ ■ ■ ■ ■ ■ ■ PINOUT Dedicated EL driver 1.6 to 5.5V supply voltage Maximum operating current • SM8143AV: 150mA max. (VDD = 3.0V, Ta ≤ 70°C) • SM8143AD: 100mA max. (VDD = 3.0V, Ta ≤ 70°C) 3.5Ω typical output resistance 200Vp-p maximum EL driver voltage* 31 to 1500Hz EL drive frequency range* High voltage CMOS Process Package: VSOP-16, SON-10 (Top view) ■ VSOP-16 NC 1 16 NC OUT1 CHV NC NC OUT2 LDR NC *: Adjustable with external resistance. NC VSS VDD NC ENA OCL 8 9 OCE APPLICATIONS ■ ■ ■ Cellular phone Mobile equipment PDA ■ SON-10 ORDERING INFORMATION VSS 1 10 CHV VSOP-16 OCL 2 9 LDR SON-10 OCE 3 8 NC ENA 4 7 OUT1 VDD 5 6 Device Package SM8143AV SM8143AD 6 OUT2 SEIKO NPC CORPORATION —1 SM8143A PACKAGE DIMENSIONS (Unit: mm) ■ VSOP-16 0.5 ± 0.2 6.4 ± 0.2 4.4 ± 0.2 +0 0.15 − .1 0.05 0.275TYP 5.1 ± 0.2 0.65 0.10 + 0.1 0.22 − 0.05 0.12 M SON-10 TOP VIEW BOTTOM VIEW 0.1 ± 0.03 0.05 ± 0.02 3.10 ± 0.1 0.15 ± 0.08 0.65 ± 0.1 0.1 ± 0.08 5 07 . R0 0.3 ± 0.08 0.35 ± 0.08 1.6 ± 0.08 5 0.15 ± 0.08 1 0.3 ± 0.05 0.4 ± 0.1 6 2.85 ± 0.1 10 0.75 ± 0.05 ■ 0.10 ± 0.05 1.15 ± 0.1 0 to 10 ° 0.05 SEIKO NPC CORPORATION —2 SM8143A BLOCK DIAGRAM EL sheet < 80cm2 LDR VDD CHV OUT1 OUT2 Switching Circuit Boosting Block Dividing Circuit 1/4 Dividing Circuit 1/1024 Oscillator for Boosting Oscillator for EL driving VSS ENA OCL OCE Oscillation Block ROCL ROCE ENA from microcontroller When ENA is logical "H", SM8143A is active. Note: Brightness and operating current are adjusted with ROCL . EL driving frequency is adjusted with ROCE . PIN DESCRIPTION Pin number Name I/O 8 NC – No connection (must be open) 2 10 CHV I High-voltage DC input 3 – NC – No connection (must be open) 4 9 LDR O Booster coil driver output 5 – NC – No connection (must be open) 6 1 VSS – Ground 7 – NC – No connection (must be open) 8 2 OCL I Coil driver oscillator (oscillator frequency determined by external resistor) 9 3 OCE I EL driver oscillator (oscillator frequency determined by external resistor) 10 4 ENA I Enable input (built-in pull-down resistor) 11 5 VDD – Supply 12 – NC – No connection (must be open) 13 6 OUT2 O Output 2 14 – NC – No connection (must be open) 15 7 OUT1 O Output 1 16 – NC – No connection (must be open) VSOP-16 SON-10 1 Function SEIKO NPC CORPORATION —3 SM8143A SPECIFICATIONS Absolute Maximum Ratings Parameter Symbol Supply voltage range VDD Input voltage range VIN Output voltage Condition All input pins − 0.3 to 7.0 V VSS − 0.3 to VDD + 0.3 V CHV pin 0.5 to 120 V VLDR LDR pin 0.5 to 120 V OUT1, OUT2 pin 0.5 to 120 V Ta ≤ 70°C 200 mW Ta ≤ 85°C 140 mW Ta ≤ 70°C 140 mW Ta ≤ 85°C 100 mW − 55 to 125 °C SM8143AV (VSOP-16) PD SM8143AD (SON-10) Storage temperature range Unit VCHV VOUT1/2 Power dissipation Rating TSTG Recommended Operating Conditions Rating Parameter Symbol Condition Unit min typ max Supply voltage range VDD2 1.6 3.0 5.5 V Operating temperature TOPR − 40 – 85 °C Ta ≤ 70°C – – 150 mA Ta ≤ 85°C – – 105 mA Ta ≤ 70°C – – 100 mA Ta ≤ 85°C – – 70 mA Ta ≤ 70°C – – 100 mA Ta ≤ 85°C – – 70 mA Ta ≤ 70°C – – 60 mA Ta ≤ 85°C – – 42 mA – 0.47 – mH SM8143AV (VSOP-16) Including coil current Operating current1 VDD = 5V IDD2 SM8143AD (SON-10) Including coil current Coil inductance VDD = 3V LLDR fLDR = 64kHz VDD = 3V VDD = 5V 1. Max value is as same as Absolute Maximum Ratings. SEIKO NPC CORPORATION —4 SM8143A DC Characteristics VDD = 3.0V, Ta = 25°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max Supply voltage VDD 1.6 3.0 5.5 V CHV output voltage VCHV 0.5 – 100 V OUT1, OUT2 HIGH-level output voltage VOUTH – – 100 V OUT1, OUT2 LOW-level output voltage VOUTL – – 0.5 V LDR output resistance RLDR ILDR = 50mA – 3.5 5.25 Ω OCE oscillator frequency fOCE1 ROCE = 180kΩ 205 256 307 OCE oscillator frequency range fOCE2 32 – 1536 OCL oscillator frequency fOCL1 205 256 307 OCL oscillator frequency range fOCL2 32 – 1536 OUT1, OUT2 output frequency fOUT1 200 250 300 OUT1, OUT2 output frequency range fOUT2 31 – 1500 LDR inductance driver frequency fLDR1 51 64 77 LDR inductance driver frequency range fLDR2 8 – 384 ENA HIGH-level input voltage VENAH ENA = HIGH, VDD = 1.6 to 5.5V VDD – 0.5 – VDD + 0.3 ENA LOW-level input voltage VENAL ENA = LOW, VDD = 1.6 to 5.5V VSS – 0.3 – VSS + 0.5 ENA input current IENAH VENAH = VDD = 3.0V 2.0 4.0 6.0 µA ENA rise time1 tENA – – 100 µs Operating current IDD1 Excluding coil current – – 1.0 mA Stand-by current ISTB ENA = LOW – – 1.0 µA ROCL = 180kΩ ROCE = 180kΩ ROCL = 180kΩ kHz kHz Hz kHz V 1. ENA VSS VDD − 0.5 VDD VSS + 0.5 tENA SEIKO NPC CORPORATION —5 SM8143A TYPICAL APPLICATIONS ■ EL sheet size: 20 to 30cm2, Current consumption: 20mA 0.1µF 100V NC CHV NC 470µH 0.01µF LDR NC VSS 3.0V NC EL sheet OUT1 NC OUT2 NC VDD NC ENA OCL OCE 180kΩ 180kΩ Diode: TOSHIBA 1SS403 Coil: MURATA LQH43MN471J03 ■ EL sheet size: 30 to 50cm2, Current consumption: 40mA 0.1µF 100V NC CHV NC 470µH 0.01µF LDR NC VSS 3.0V NC EL sheet OUT1 NC OUT2 NC VDD NC ENA OCL OCE 360kΩ 180kΩ Diode: TOSHIBA 1SS403 Coil: MURATA LQH43MN471J03 ■ EL sheet size: 50 to 100cm2, Current consumption: 80mA 0.1µF 100V NC CHV NC 330µH 0.01µF LDR NC VSS 3.0V 510kΩ NC EL sheet OUT1 NC OUT2 NC VDD NC ENA OCL OCE 180kΩ Diode: TOSHIBA 1SS403 Coil: TOKO D73LC (817CE331M) Note: Do not operate the SM8143A with the EL sheet NOT connected (no load to OUT1/OUT2) since the IC will be damaged. SEIKO NPC CORPORATION —6 SM8143A FOOTPRINT The optimum footprint varies depending on the board material, soldering paste, soldering method, and equipment accuracy, all of which need to be considered to meet design specifications. (Unit: mm) ■ VSOP-16 Package b2 L2 e el VSOP-16 0.55 0.95 0.65 5.90 L2 e1 L2 b2 b2 e SON-10 • Footprint pattern • Metalmask pattern ç 0.40 1.15 3.30 0.90 1.15 0.35 0.65 3.30 0.35 0.50 0.65 ■ 1.60 1.60 2.25 2.35 3.25 3.15 SEIKO NPC CORPORATION —7 SM8143A Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan Telephone: +81-3-6667-6601 Facsimile: +81-3-6667-6611 http://www.npc.co.jp/ Email: [email protected] NC9923CE 2006.06 SEIKO NPC CORPORATION —8