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