NTE1531 Integrated Circuit Voltage Regulator for Electronic Tuning System Description: The NTE1531 is a voltage regulator for use with a varactor tuner or electronic tuning control. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Input Voltage (+B1, +B2, CLK), VB1, VB2, VCLKmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21V Allowable Power Dissipation, PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C Recommended Operation Conditions: (TA = +25°C unless otherwise specified) Parameter Symbol Min Typ Max Unit Vref Output Current Iref –10 – 0 mA VDD Output Current IDD –30 – 0 mA INHI Output Current IINHI –0.5 – 0 mA BUC Output Current IBUC –0.8 – 0 mA VB1, VB2 9 – 16 V Min Typ Max Unit +B1, +B2 Input Voltage Operational Characteristics: (TA = +25°C, unless otherwise specified) Parameter VDD Voltage Symbol Conditions VDD(1) +B1 = +B2 = 9V, IDD = 30mA, Iref = 10mA, Vref = 8V, TA = –20° to +70°C Vref–0.3 – 8.5 V VDD(2) +B1 = +B2 = 16V, IDD = 30mA, Iref = 10mA, Vref = 8V, TA = –20° to +70°C Vref–0.3 – 10 V VDD Voltage (At Back–Up Time) VDD(3) +B2 = 9 to 16V, IDD = 4mA, +B1 opened. 4.5 – 5.5 V VDD Voltage VDD(4) VCLK = +B2 = 9V, IDD = 18mA, Iref = 10mA, Vref = 8V, TA = –20° to +70°C, +B1 opened. Vref–0.3 – 8.5 V Operational Characteristics (Cont’d): (TA = +25°C, unless otherwise specified) Parameter Symbol Conditions Min Typ Max Unit VDD Voltage VDD(5) VCLK = +B2 = 16V, IDD = 18mA, Iref Vref–0.3 = 10mA, Vref = 8V, TA = –20° to +70°C, +B1 opened. – 10 V Radio Back–Up Signal Voltage VBUC +B1 = +B2 = 9.15 to 16V, Vref = 8V 0.78VDD – VDD V Clock Back–Up Signal Voltage VINHI +B1 = +B2 = 9.15 to 16V, Vref = 8V 0.78VDD – VDD V Radio Back–Up Signal Rise Voltage VTH BUC UP +B1 = +B2, Vref = 8V, Iref = 10mA 8.9 – 9.3 V Radio Back–Up Signal Hysteresis VTH BUC DN +B1 = +B2, Vref = 8V, Iref = 10mA 50 – 200 mV +B1 = +B2 = 13.2V, C = 22µF, R = 22k ohm 85 – 400 ms BUC Delay Time at +B Step Input tD Current Dissipation ICC(1) +B1 = +B2 = 13.2V, IDD = 30mA, Iref = 10mA – 70 – mA ICC(2) +B2 = 13.2V, no load, +B1 opened. – 0.63 1.4 mA |∆Vref| TA = –10 to +60°C, Vref = 8V (25°C) –60 0 60 mV Vref Thermal Drift Logic Table: B1 B2 CLK VDD Vref BUC INHI Condition L H L 5V 0V L L When back–up of time H H L 9V 8V H H radio on L H H 9V 8V L H read out time when radio off H H H 9V 8V H H read out time when radio on NOTE: This device is for REPLACEMENT ONLY! No application notes are available. Block Diagram N.C. Vref 14 VDD 13 12 INHI BUC 9 8 Vref Generator VDD Generator VDD Generator for Back–Up Time Counter IC Control Signal Generator Control LSI Control Signal Generator Reference Voltage Generator Comparator Delay Comparator Logic Circuit 1 4 C2 2 V1 3 Det 10 C3 C1 5 GND 11 B2 6 CLK 7 B1 Pin Connection Diagram Tab C2 1 14 N.C. Detector 2 13 Vref C3 3 12 VDD V1 4 11 (+) B2 GND 5 10 C1 Clk 6 9 INHI (+) B1 7 8 BUC .099 (2.52) 14 8 .252 (6.45) 1 .082 (2.1) Dia .265 (6.5) 7 .748 (19.0) .300 (7.62) .167 (4.26) .100 (2.54) .236 (6.0) .137 (3.5)