SM8142

SM8142 NIPPON PRECISION CIRCUITS INC. EL Sheet Driver OVERVIEW The SM8142 is a transformer-less electroluminescent (EL) sheet lamp driver, capable of driving sheets up to 30 cm2 in size. It employs a high-efficiency driver output circuit configuration to control power dissipation. It is available in ultra-small 8-pin SON (Small Outline Non-leaded) packages*, making possible the construction of small, thin, low-power driver units. * : SM8142×D FEATURES I I I I I I I I I I I I Dedicated EL driver Noise-less smooth drive waveform High-efficiency output circuit Two oscillator circuits built-in (SM8142A) Stand-by function (SM8142B) Stable temperature characteristics Ultra-small package 1.6 to 5.5 V supply voltage 0.3 mA typ. (VDD = 3.0 V) current consumption (excluding coil current) 200 Vp-p maximum EL driver voltage 31 to 1000 Hz EL drive frequency range 0.22 mH minimum coil inductance ORDERING INFORMATION D e vice SM8142AD SM8142BD SM8142AV SM8142BV P ackag e 8-pin SON 8-pin SON 8-pin V S O P 8-pin V S O P NIPPON PRECISION CIRCUITS—1 S M8142 PINOUT (Top View) I PACKAGE DIMENSIONS (Unit : mm) I 8-pin SON SM8142AD 8-pin SON 2.90 ± 0.1 2.80 ± 0.1 0.125 ± 0.05 OCL 2 OCE 3 VDD 4 7 CHV 6 OUT1 0.48typ SM8142BD 0.65 0.05 + 0.1 0.30 − 0.05 0.05 M VSS 1 8 LDR 0.20 ± 0.08 OSC 2 ENA 3 VDD 4 7 CHV 6 OUT1 5 OUT2 0.20 ± 0.08 I I 8-pin VSOP SM8142AV 8-pin VSOP CHV LDR VSS OCL 1 2 3 4 8 7 OUT1 OUT2 4.4 ± 0.2 8142A 6 5 VDD OCE 6.4 ± 0.3 + 0.1 0.80 − 0.05 5 OUT2 3.00 ± 0.1 VSS 1 8 LDR 0.575 typ SM8142BV 3.1 ± 0.3 1.15 ± 0.05 0.15 −0.05 +0.1 CHV LDR VSS OSC 1 2 3 4 8 7 OUT1 OUT2 VDD ENA 8142B 6 5 0.22 ± 0.1 NIPPON PRECISION CIRCUITS—2 0.1 ± 0.05 0.65 0.5 ± 0.2 4 2A 4 2B S M8142 BLOCK DIAGRAM I SM8142A I SM8142B EL sheet EL sheet VDD LDR CHV OUT1 OUT2 VDD LDR CHV OUT1 OUT2 High Voltage Switching Circuit High Voltage Switching Circuit Dividing Circuit Dividing Circuit Dividing Circuit Dividing Circuit Oscillator for Boosting Voltage VSS OCL Oscillator for EL Driving OCE VSS Oscillator for Boosting Voltage and EL Driving OSC ENA PIN DESCRIPTION P in nu m b e r Ver. VSOP-8 1 2 3 SON-8 7 8 1 A/B A/B A/B A 4 2 B A 5 6 7 8 3 B 4 5 6 A/B A/B A/B ENA VDD OUT2 OUT1 OSC OCE I I Ip 1 – O O CHV LDR VSS OCL I O – I High-voltage DC input Booster coil driver output Ground Coil driver oscillator (oscillator frequency determined by external resistor) Coil and EL driver oscillator (oscillator frequency determined by external resistor) EL driver oscillator (oscillator frequency determined by external resistor) E n a ble input (HIGH: enable, LOW : disable) Supply Output 2 Output 1 Name I/O Function 1 . Built-in pull-down resistor NIPPON PRECISION CIRCUITS—3 S M8142 SPECIFICATIONS Absolute Maximum Ratings P arameter S upply voltage range Input voltage range Symbol VDD V IN VCHV Output voltage VLDR VOUT1/2 Pow er dissipation Storage temperature range PD T s tg A ll Input pins C HV pin L DR pin O UT1 , OUT2 pin T a ≤ 8 5 °C Condition Rating − 0 .3 to 7.0 V S S − 0 .3 to V D D + 0 .3 0.5 to 120 0.5 to 120 0.5 to 120 100 − 5 5 to 125 Unit V V V V V mW °C Recommended Operating Conditions Rating P arameter S upply voltage range Operating temperature Operating current 1 Coil inductance Symbol VDD2 TO P R ID D 2 LLDR2 I ncluding coil current, V D D = 3 .0V Including coil current, V D D = 5 .0V fL D R = 6 4 kHz Condition min 1 .6 − 40 – – – typ 3.0 – – – 0.47 max 5.5 85 60 mA 36 – mH V °C Unit 1 . Max value is as same as Absolute Maximum Ratings. NIPPON PRECISION CIRCUITS—4 S M8142 DC Characteristics VDD = 3.0 V, Ta = 25 °C unless otherwise noted. Rating P arameter S upply voltage CHV output voltage OUT1, OUT2 HIGH-level output voltage O U T 1 , O U T 2 L OW -level output voltage LDR output resistance O CE oscillator frequency A OCE oscillator frequency range OCL oscillator frequency A OCL oscillator frequency range OSC oscillator frequency B OSC oscillator frequency range OUT1, OUT2 output frequency A/B OUT1, OUT2 output frequency range LDR inductance driver frequency A/B LDR inductance driver frequency range ENA HIGH-level input voltage B E N A L OW -level input voltage ENA input current Operating current Stand-by current B A/B B Ver. A/B A/B A/B A/B A/B Symbol VDD VCHV VOUTH VOUTL R LDR fO C E 1 fO C E 2 fO C L 1 fO C L 2 fO S C 1 fO S C 2 fO U T 1 fO U T 2 fL D R 1 fL D R 2 VENAH VENAL IE N A H ID D 1 IS T B E NA = “H”, V D D = 1 .6 to 5.5V E NA = “L”, V D D = 1 .6 to 5.5V V E N A H = V D D = 3 .0V E xcluding coil current E NA = “L” R O C L / R O S C = 1 80 k Ω R O C E / R O S C = 1 80 k Ω R O S C = 1 80 k Ω R O C L = 1 80 k Ω IL D R = 5 0 mA R O C E = 1 80 k Ω Condition min 1 .6 0 .5 – – – 2 05 32 2 05 32 2 05 32 2 00 31 51 8 V D D – 0 .5 V S S – 0 .3 2.0 – – typ 3.0 – – – 8.0 256 – 256 – 256 – 250 – 64 – – – 4.0 – – max 5.5 100 100 0.5 12.0 307 kHz 1024 307 kHz 1024 307 kHz 1024 300 Hz 1000 77 kHz 256 V D D + 0 .3 V S S + 0 .5 6.0 0.5 1.0 µA mA µA V V V V V Ω Unit NIPPON PRECISION CIRCUITS—5 S M8142 TYPICAL APPLICATIONS I SM8142AD 0.47mH VSS OCL LDR CHV C bypass 0.01µF EL sheet size:5cm2 to 10cm2 Current Consumption:15mA 100kΩ OCE OUT1 OUT2 EL sheet 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:RIVER ELETEC FLC32PC 180kΩ VDD 3.0V 0.47mH VSS OCL LDR CHV C bypass 0.01µF EL sheet size:20cm2 to 30cm2 Current Consumption:20mA 180kΩ OCE OUT1 OUT2 EL sheet 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:MURATA LQH4N471K04M00 180kΩ VDD 3.0V 0.47mH VSS OCL LDR CHV C bypass 0.01µF EL sheet size:10cm2 to 15cm 2 Current Consumption:20mA 360kΩ OCE OUT1 OUT2 EL sheet 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:MURATA LQH4N471K04M00 180kΩ VDD 1.5V 3.0V 0.47mH VSS OCL LDR CHV C bypass 0.01µF EL sheet size:30cm 2 to 50cm 2 Current Consumption:40mA 360kΩ OCE OUT1 EL sheet 1kΩ* VDD OUT2 180kΩ 3.0V 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:MURATA LQH4N471K04M00 * : Connect a 1k Ω r esistor to protect IC when the size of EL sheet is over 30cm 2 . N ote: Do not operate the S M 8 1 4 2 with the EL sheet NOT connected (no load to OUT1/OUT2) since the IC will be damaged. NIPPON PRECISION CIRCUITS—6 S M8142 I SM8142BD 0.47mH VSS OSC LDR CHV C bypass 0.01µF EL sheet size:5cm2 to 10cm2 Current Consumption:15mA 100kΩ ENA VDD OUT1 OUT2 EL sheet 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:RIVER ELETEC FLC32PC 3.0V 0.47mH VSS OSC LDR CHV C bypass 0.01µF EL sheet size:20cm2 to 30cm2 Current Consumption:20mA 180kΩ ENA VDD OUT1 OUT2 EL sheet 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:MURATA LQH4N471K04M00 3.0V 0.22mH VSS OSC LDR CHV C bypass 0.01µF EL sheet size:10cm2 to 15cm 2 Current Consumption:20mA 180kΩ ENA VDD OUT1 OUT2 EL sheet 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:MURATA LQH4N221K04M00 1.5V 3.0V 0.22mH VSS OSC LDR CHV C bypass 0.01µF EL sheet size:30cm 2 to 50cm 2 Current Consumption:40mA 180kΩ ENA VDD OUT1 EL sheet 1kΩ* OUT2 0.1µF 100V Diode:TOSHIBA 1SS370 Coil:MURATA LQH4N221K04M00 3.0V * : Connect a 1k Ω r esistor to protect IC when the size of EL sheet is over 30cm 2 . N ote: Do not operate the S M 8 1 4 2 with the EL sheet NOT connected (no load to OUT1/OUT2) since the IC will be damaged. NIPPON PRECISION CIRCUITS—7 S M8142 N IPPON 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 for 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. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9810HE 2000.08 NIPPON PRECISION CIRCUITS INC. NIPPON PRECISION CIRCUITS—8