SM8141 EL Sheet Driver NIPPON PRECISION CIRCUITS INC. OVERVIEW PINOUT The SM8141 is a transformer-less electroluminescent (EL) sheet lamp driver, capable of driving sheets up to 50cm2 in size. It employs built-in high withstand voltage output MOS transistors and requires few external components, making it ideal for compact driver units in portable equipment. 8pin VSOP (TOP VIEW) CHV 1 8 OUT1 LDR 2 7 OUT2 VSS 3 6 VDD OCL 4 5 OCE CHV 1 8 OUT1 LDR 2 7 OUT2 VSS 3 6 VDD OSC 4 5 ENA FEATURES ■ ■ ■ ■ ■ ORDERING INFORMATION DEVICE PA C K A G E S M 8 1 4 1 AV 8pin V S O P SM8141BV 8pin V S O P CF8141A Chip form CF8141B Chip form 8141B PACKAGE DIMENSIONS (Unit : mm) 0 to 10 0.5 ± 0.2 ■ 6.4 ± 0.3 ■ 4.4 ± 0.2 ■ ■ 0.575 typ +0.1 0.15 −0.05 3.1 ± 0.3 1.15 ± 0.05 ■ Dedicated EL driver 50cm2 maximum EL sheet drive capability Noise-less smooth drive waveform Two oscillators (EL and coil)(SM8141A) Stand-by function (SM8141B) High-efficiency MOS transistor driver Dual supply operation possible (See TYPICAL APPLICATIONS) 2.0 to 5.5V supply operation 200Vp-p maximum drive voltage 250Hz standard drive frequency 8-pinVSOP package Chip form 0.65 0.10 0.1 ± 0.05 ■ ■ 8141A 0.22 ± 0.1 0.12 M NIPPON PRECISION CIRCUITS—1 SM8141 PAD DIMENSIONS (Unit : mm) (1800,1300) 6 7 Y 8 1 5 4 3 NPC SA8141 2 (0,0) X Chip size : 1.80 × 1.30 (mm) Chip thickness : 300 ( µm ) Chip base : V S S PIN DESCRIPTION • SM8141A P ad dimensions Pin number P ad number Name 1 6 2 I/O Function X (µm) Y (µm) CHV 635 1150 I High-voltage DC input 7 LDR 435 1150 O Booster coil driver output 3 8 VSS 180 420 – Ground 4 1 OCL 180 180 I Coil driver oscillator (oscillator frequency determined by external variable resistor) 5 2 OCE 1620 180 I EL driver oscillator (oscillator frequency determined by external variable resistor) 6 3 VDD 1620 420 – Supply 7 4 OUT2 1650 1120 O Output 2 8 5 OUT1 1110 1120 O Output 1 • SM8141B P ad dimensions Pin number P ad number Name 1 6 2 I/O Function X (µm) Y (µm) CHV 635 1150 I High-voltage DC input 7 LDR 435 1150 O Booster coil driver output 3 8 VSS 180 420 – Ground 4 1 OSC 180 180 I Coil and EL driver oscillator (oscillator frequency determined by external variable resistor) 5 2 ENA 1620 180 I E n a ble input (built-in pull-down resistor) 6 3 VDD 1620 420 – Supply 7 4 OUT2 1650 1120 O Output 2 8 5 OUT1 1110 1120 O Output 1 NIPPON PRECISION CIRCUITS—2 SM8141 BLOCK DIAGRAM OUT2 OUT1 CHV LDR VDD • SM8141A Divider Oscillation Circuit for Voltage Booster Oscillasion Circuit for output OCE Divider OCL VSS High Voltage Switching Circuit OUT2 OUT1 CHV LDR VDD • SM8141B High Voltage Switching Circuit Divider Divider ENA OSC VSS Oscillation Circuit for boosting voltage and EL drive NIPPON PRECISION CIRCUITS—3 SM8141 SPECIFICATIONS Absolute Maximum Ratings VSS = 0 V P arameter Symbol Supply voltage range VDD Input voltage range V IN Output voltage Pow er dissipation All Input pins Rating Unit − 0.3 to 7.0 V V S S − 0.3 to V D D + 0.3 V VCHV CHV pin 0.5 to 120 V VLDR LDR pin 0.5 to 120 V OUT1 , OUT2 pin 0.5 to 120 V − 55 to 125 °C 100 mW VOUT1/2 Storage temperature range Condition TSTG PD T a ≤ 85 °C Soldering temperature TSLD 255 °C Soldering time tS L D 10 s Recommended Operating Conditions VSS = 0 V Rating P arameter Symbol Condition Unit min typ max Supply voltage VDD 2.0 3.0 5.5 V Operating temperature TO P R − 40 – 85 °C Operating current 1 Including coil current, V D D = 3.0V – – 60 ID D 2 Including coil current, V D D = 5.0V – – 36 fL D R = 64 kHz – 0.47 – Coil inductance LLDR2 mA mH 1. Max value is as same as Absolute Maximum Ratings. NIPPON PRECISION CIRCUITS—4 SM8141 DC Characteristics Ta = 25 °C, VSS = 0 V, VDD = 3.0 V unless otherwise noted Rating P arameter Ver. Symbol Condition Unit min typ max Supply voltage A/B VDD 2.0 3.0 5.5 V CHV output voltage A/B VCHV 0.5 – 100 V OUT1, OUT2 HIGH-level output voltage A/B VOUTH – – 100 V O U T 1 , O U T 2 L OW -level output voltage A/B VOUTL – – 0.5 V LDR output resistance A/B R LDR IL D R = 50 mA – 8.0 12.0 Ω fO C E 1 R O C E = 200 k Ω 205 256 307 32 – 1024 205 256 307 32 – 1024 205 256 307 32 – 1024 200 250 300 31 – 1000 51 64 77 8 – 256 OCE oscillator frequency A OCE oscillator frequency range fO C E 2 OCL oscillator frequency A OCL oscillator frequency range fO C L 1 R O C L = 200 k Ω fO C L 2 OSC oscillator frequency B OSC oscillator frequency range fO S C 1 R O S C = 200 k Ω fO S C 2 OUT1, OUT2 output frequency A/B OUT1, OUT2 output frequency range fO U T 1 R O C E /R O S C = 200 k Ω fO U T 2 LDR inductance driver frequency A/B LDR inductance driver frequency range fL D R 1 R O C L /R O S C = 200 k Ω fL D R 2 ENA HIGH-level input voltage B E N A L OW -level input voltage kHz kHz kHz Hz kHz VENAH ENA = “H”, V D D = 2.0 to 5.5V V D D − 0.5 – V D D + 0.3 VENAL ENA = “L”, V D D = 2.0 to 5.5V V S S − 0.3 – V S S + 0.5 2.0 4.0 6.0 µA V ENA input current B IE N A H V E N A H = 3.0V, V D D = 3.0V Operating current A/B ID D 1 Excluding coil current – – 1 mA Stand-by current B IS T B ENA = “L” – – 1 µA ENA r ise time B tE N A VENAL → VENAH – – 100 ms VDD − 0.5 VSS VDD VSS + 0.5 tENA Rise time NIPPON PRECISION CIRCUITS—5 SM8141 TYPICAL APPLICATIONS • SM8141A 2 2 EL size:20cm to 30cm Current Consumption 20mA SM8141A 1 0.1µF 100V CHV EL sheet OUT1 8 2 LDR OUT2 7 3 VSS VDD 6 4 OCE 5 OCL 0.47mH 200kΩ 0.01µF Cbypass 200kΩ 3.0V Diode:TOSHIBA 1SS250 Coil:MURATA LQH4N471K04M00 2 2 EL size:10cm to 15cm Current Consumption 20mA SM8141A 0.1µF 100V EL sheet OUT1 8 2 LDR OUT2 7 3 VSS VDD 6 4 OCE 5 1 CHV OCL 0.47mH 390kΩ 0.01µF Cbypass 200kΩ 3.0V 1.5V Diode:TOSHIBA 1SS250 Coil:MURATA LQH4N471K04M00 2 2 EL size:30cm to 50cm Current Consumption 40mA SM8141A 1 0.1µF 100V CHV EL sheet OUT1 8 2 LDR OUT2 7 3 VSS VDD 6 4 OCE 5 OCL 0.47mH 390kΩ 200kΩ 0.01µF Cbypass 3.0V Diode:TOSHIBA 1SS250 Coil:MURATA LQH4N471K04M00 NIPPON PRECISION CIRCUITS—6 SM8141 • SM8141B 2 2 EL size 20cm to 30cm Current Consumption 20mA SM8141B 0.1µF 100V EL sheet OUT1 8 2 LDR OUT2 7 3 VSS VDD 6 4 ENA 5 1 CHV OSC 0.47mH 200kΩ 0.01µF Cbypass 3.0V Diode:TOSHIBA 1SS250 Coil:MURATA LQH4N471K04M00 2 2 EL size 10cm to 15cm Current Consumption 20mA SM8141B 1 0.1µF 100V CHV EL sheet OUT1 8 2 LDR OUT2 7 3 VSS VDD 6 4 ENA 5 OSC 0.22mH 200kΩ 0.01µF Cbypass 3.0V 1.5V Diode:TOSHIBA 1SS250 Coil:MURATA LQH4N221K04M00 2 2 EL size 30cm to 50cm Current Consumption 40mA SM8141B 1 0.1µF 100V CHV EL sheet OUT1 8 2 LDR OUT2 7 3 VSS VDD 6 4 ENA 5 OSC 0.22mH 200kΩ 0.01µF Cbypass 3.0V Diode:TOSHIBA 1SS250 Coil:MURATA LQH4N221K04M00 NIPPON PRECISION CIRCUITS—7 SM8141 NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility fo r the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with expor t controls on the distribution or dissemination of the products. Customers shall not expor t, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9710DE 1999.10 NIPPON PRECISION CIRCUITS—8