SM8143A_06

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 I I I PINOUT (Top view) I I I I I I 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 VSOP-16 NC CHV NC LDR NC VSS NC OCL 1 16 NC OUT1 NC OUT2 NC VDD ENA *: Adjustable with external resistance. 8 9 OCE APPLICATIONS I I I Cellular phone Mobile equipment PDA I SON-10 ORDERING INFORMATION Device SM8143AV SM8143AD Package VSOP-16 SON-10 VSS 1 OCL 2 OCE 3 ENA 4 VDD 5 10 9 8 7 6 6 CHV LDR NC OUT1 OUT2 SEIKO NPC CORPORATION —1 SM8143A PACKAGE DIMENSIONS (Unit: mm) I VSOP-16 +0 0.15 − .1 0.05 4.4 ± 0.2 6.4 ± 0.2 0.275TYP 5.1 ± 0.2 1.15 ± 0.1 0 to 10 ° 0.10 + 0.1 0.22 − 0.05 0.12 M I SON-10 TOP VIEW 0.15 ± 0.08 0.10 ± 0.05 0.65 BOTTOM VIEW 0.3 ± 0.05 0.35 ± 0.08 10 6 0.5 ± 0.2 1.6 ± 0.08 2.85 ± 0.1 0.4 ± 0.1 1 3.10 ± 0.1 5 0.05 ± 0.02 0.1 ± 0.03 0.65 ± 0.1 0.75 ± 0.05 0.05 SEIKO NPC CORPORATION —2 0.1 ± 0.08 . R0 07 5 0.15 ± 0.08 0.3 ± 0.08 SM8143A BLOCK DIAGRAM EL sheet < 80cm2 VDD LDR CHV OUT1 OUT2 Switching Circuit Boosting Block Dividing Circuit 1/4 Dividing Circuit 1/1024 Oscillator for Boosting VSS ENA OCL Oscillator for EL driving 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 VSOP-16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SON-10 8 10 – 9 – 1 – 2 3 4 5 – 6 – 7 – NC CHV NC LDR NC VSS NC OCL OCE ENA VDD NC OUT2 NC OUT1 NC – I – O – – – I I I – – O – O – No connection (must be open) High-voltage DC input No connection (must be open) Booster coil driver output No connection (must be open) Ground No connection (must be open) Coil driver oscillator (oscillator frequency determined by external resistor) EL driver oscillator (oscillator frequency determined by external resistor) Enable input (built-in pull-down resistor) Supply No connection (must be open) Output 2 No connection (must be open) Output 1 No connection (must be open) I/O Function SEIKO NPC CORPORATION —3 SM8143A SPECIFICATIONS Absolute Maximum Ratings Parameter Supply voltage range Input voltage range Symbol VDD VIN VCHV Output voltage VLDR VOUT1/2 All input pins CHV pin LDR pin OUT1, OUT2 pin SM8143AV (VSOP-16) Power dissipation PD SM8143AD (SON-10) Storage temperature range TSTG Ta ≤ 70°C Ta ≤ 85°C Ta ≤ 70°C Ta ≤ 85°C Condition Rating − 0.3 to 7.0 VSS − 0.3 to VDD + 0.3 0.5 to 120 0.5 to 120 0.5 to 120 200 140 140 100 − 55 to 125 Unit V V V V V mW mW mW mW °C Recommended Operating Conditions Rating Parameter Supply voltage range Operating temperature Symbol VDD2 TOPR SM8143AV (VSOP-16) Including coil current Operating current1 IDD2 SM8143AD (SON-10) Including coil current Coil inductance LLDR fLDR = 64kHz VDD = 3V VDD = 3V Ta ≤ 70°C Ta ≤ 85°C Ta ≤ 70°C Ta ≤ 85°C Ta ≤ 70°C Ta ≤ 85°C Ta ≤ 70°C Ta ≤ 85°C Condition min 1.6 − 40 – – – – – – – – – typ 3.0 – – – – – – – – – 0.47 max 5.5 85 150 105 100 70 100 70 60 42 – V °C mA mA mA mA mA mA mA mA mH Unit VDD = 5V 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 Supply voltage CHV output voltage OUT1, OUT2 HIGH-level output voltage OUT1, OUT2 LOW-level output voltage LDR output resistance OCE oscillator frequency OCE oscillator frequency range OCL oscillator frequency OCL oscillator frequency range OUT1, OUT2 output frequency OUT1, OUT2 output frequency range LDR inductance driver frequency LDR inductance driver frequency range ENA HIGH-level input voltage ENA LOW-level input voltage ENA input current ENA rise time1 Operating current Stand-by current 1. Symbol VDD VCHV VOUTH VOUTL RLDR fOCE1 fOCE2 fOCL1 fOCL2 fOUT1 fOUT2 fLDR1 fLDR2 VENAH VENAL IENAH tENA IDD1 ISTB Excluding coil current ENA = LOW ENA = HIGH, VDD = 1.6 to 5.5V ENA = LOW, VDD = 1.6 to 5.5V VENAH = VDD = 3.0V ROCL = 180kΩ ROCE = 180kΩ ROCL = 180kΩ ILDR = 50mA ROCE = 180kΩ Condition min 1.6 0.5 – – – 205 32 205 32 200 31 51 8 VDD – 0.5 VSS – 0.3 2.0 – – – typ 3.0 – – – 3.5 256 – 256 – 250 – 64 – – – 4.0 – – – max 5.5 100 100 0.5 5.25 307 kHz 1536 307 kHz 1536 300 Hz 1500 77 kHz 384 VDD + 0.3 VSS + 0.5 6.0 100 1.0 1.0 µA µs mA µA V V V V V Ω Unit ENA VSS VDD − 0.5 VSS + 0.5 VDD tENA SEIKO NPC CORPORATION —5 SM8143A TYPICAL APPLICATIONS I EL sheet size: 20 to 30cm2, Current consumption: 20mA 0.1µF 100V NC CHV NC NC OUT1 NC OUT2 NC VDD ENA OCE EL sheet 0.01µF 470µH LDR NC VSS NC OCL 3.0V 180kΩ Diode: TOSHIBA 1SS403 Coil: MURATA LQH43MN471J03 180kΩ I EL sheet size: 30 to 50cm2, Current consumption: 40mA 0.1µF 100V NC CHV NC NC OUT1 NC OUT2 NC VDD ENA OCE EL sheet 0.01µF 470µH LDR NC VSS NC OCL 3.0V 360kΩ Diode: TOSHIBA 1SS403 Coil: MURATA LQH43MN471J03 180kΩ I EL sheet size: 50 to 100cm2, Current consumption: 80mA 0.1µF 100V NC CHV NC NC OUT1 NC OUT2 NC VDD ENA OCE EL sheet 0.01µF 330µH LDR NC VSS NC OCL 3.0V 510kΩ 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) I VSOP-16 Package VSOP-16 b2 0.55 L2 0.95 e 0.65 b2 el 5.90 e1 e b2 I SON-10 • Footprint pattern 0.50 0.35 0.35 L2 L2 • Metalmask pattern ç 0.40 0.90 0.65 1.60 2.35 3.15 1.15 3.30 1.15 0.65 1.60 2.25 3.25 SEIKO NPC CORPORATION —7 3.30 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: sales@npc.co.jp NC9923CE 2006.06 SEIKO NPC CORPORATION —8