Ordering number: EN5386 Monolithic Linear IC LA5312V Variable Divided Voltage Generator for LCDs Overview Package Dimensions unit : mm The LA5312V is a variable divided voltage generator IC for multiple drive of LCD matrix. 3179-SSOP20 [LA5312V] Features . Power supply for variable bias LCD drive to 1/19 bias available by internal resistors) . (1/5 Four voltage outputs generated by four operational . amplifiers. current drain (0.18 mA typ.) . Low Miniflat package for miniaturization. SANYO : SSOP20 Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Maximum supply voltage VEE max Maximum output current IOUT max Allowable power dissipation Conditions VCC – VEE V1 – V4 Ratings 36 Pd max Unit V *Internal mA 330 mW Operating temperature Topr –20 to +75 °C Storage temperature Tstg –30 to +125 °C Note 1: Continuous operation (without damage) is guaranteed in the above ranges. Note 2: *The maximum output current is the value stipulated under the test conditions on page 4. Note 3: Output pins V1 to V4-to-VCC or GND short not exceeding 1 ms is acceptable. (|VCC – VEE| < 35 V) Operating Conditions at Ta = 25°C Parameter Symbol Supply voltage VEE Input voltage VREF Output current Conditions IOUT1,2 VCC – VEE VREF ^ VEE : VCC – VREF V1, V2 IOUT3,4 V3, V4 Ratings Unit –35.5 to –6 V –35 to –6 V –0.5 to +5 mA –10 to +5 mA Note 4: Set VCC and VEE so that |V1| and |VEE – V4| are 1 V or more. SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 53096HA(II) No.5386-1/5 LA5312V Operating Characteristics at Ta = 25°C, VCC – VEE = 20 V, VREF = VEE, RX = 8 R Parameter Current drain Input current Symbol ICC, IEE ISTR Ra1 Ra2 Rb1 Rb2 Rb3 Rb4 RX1 RX2 R X3 R X4 Output voltage ratio Internal resistance ratio Resistance value R nV1 nV2 nV3 nV4 –nV1 –nV2 –nV3 Load regulation Allowable power dissipation, Pd max – mW –nV4 Conditions STR = 5 V : VCC, VEE STR = 5 V : STR V2 / V1 (VREF – V3) / (VREF – V4) VREF / V1 VREF / V2 VREF / (VREF – V3) VREF / (VREF – V4) Referenced to R across : RX1 : R X1 : R X1 RX4 and VIN3 : R X1 – – – – min 1.96 1.96 11.64 5.82 5.82 11.64 RX2 RX3 RX4 VIN3 R value when voltage is applied across RX4 and VIN3 is 0.5 V : RX4 – VIN3 +0.1 mA < IOUT1 < +5 mA : V1 +0.1 mA < IOUT2 < +5 mA : V2 +0.1 mA < IOUT3 < +5 mA : V3 +0.1 mA < IOUT4 < +5 mA : V4 –0.5 mA < IOUT1 < –0.1 mA : V1 –0.5 mA < IOUT2 < –0.1 mA : V2 –10 mA < IOUT3 < –0.1 mA : V3 –10 mA < IOUT4 < –0.1 mA : V4 (Source IOUT is negative and sink IOUT is positive). typ 0.18 9 2.00 2.00 12.00 6.00 6.00 12.00 8 12 14 15 max 0.3 12 2.04 2.04 12.36 6.18 6.18 12.36 30 Unit mA µA — — — — — — — — — — kΩ ±20 ±20 ±20 ±20 ±20 ±20 ±20 mV mV mV mV mV mV mV ±20 mV Ambient temperature, Ta – °C No.5386-2/5 LA5312V Pin Assignment Block Diagram Start-up circuit (The voltages VRX1, VRX2, VRX3, and VRX4 must obey the relationship VRX1 ^ VRX2 ^ VRX3 ^ VRX4). No.5386-3/5 LA5312V Maximum Output Current Load Test Conditions Input 1 VCC – VEE = 35 V RX = 8 R Input 2 C1 to 4 = 10 µF TR1 to 4: 2SA984 TR5 to 9: 2SC2274 C5 = 33 µF E or F rank E or F rank R: 1 W or more The output load resistor values (R1 to R8) are set so that when an ‘‘on’’ level signal is input to inputs 1 and 2, a current of 15 to 30 mA max. flows to the sink side and the source side (approximately 2 mA on the V1 source side). Input 1 Input 2 STR Pin Usage The STR input is configured as shown left. . The STR is either shorted with V or connected via an external resistor. . toIt isV possible to use a separate power supply CC CC Start-up circuit (VIN) such that 2 V < VIN < VCC for current saving. (2 V or more required for STR) (2 V < VIN < VCC) No.5386-4/5 LA5312V ICC – VCC, ISTR – VCC Supply voltage, VCC – V Output voltage, VOUT – V Current drain, ICC – mA Input current, ISTR – µA VOUT – IOUT (source side) Output current, IOUT – mA Output voltage, VOUT – V VOUT – IOUT (sink side) Output current, IOUT – mA No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of May, 1996. Specifications and information herein are subject to change without notice. No.5386-5/5