L5951

L5951 TRIPLE OUTPUT MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO WITH IDR/CLASS 2 INTERFACE s s s s s s s s s s s 3 VOLTAGE REGULATORS: 3.3V (100mA) STANDBY REGULATOR 5V (100mA) STANDBY REGULATOR 7.8V (100mA) OUT OF REGULATION DETECTION FOR 5VSTANDBY REGULATOR WIDE OPERATING SUPPLY VOLTAGE RANGE FROM 4.5V UP TO 26.5V FOR TRANSIENT 34V VERY LOW STANDBY QUIESCENT CURRENT ( 3 VDC Verify RX < 3 VDC BUSItoh - BUShhtol TX = 5 VDC, BUS = 257 to 1380 Ω to gnd VBAT - 8.2 to 16 VDC VBAT - 6.0 to 8.2 VDC TX = 0V TX = 5VDC BUS = -2 to 4.8VDC BUS = -2 to 0 VDC BUS = 0 to VBAT I LOAD = 6mA 4.25 3.7 3.50 0.15 V V V 7.2 5 V V IBUSshort IBUSleak BUS Short Circuit Current BUS Leakage Current 170 0 0 0.045 mA mA mA V LOADON Load Output 7/13 L5951 ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VBAT = 14.4V unless otherwise specified. Standard Loads: IREG1 = 0.5mA, IREG2 = 0.5mA, IREG3 = 5mA) Symbol Parameter Test Condition V BAT = 0V, ILOAD = 6mA IVBAT = 0mA, BUS = -18 to 9VDC LOAD = -18 to 0 VDC Verify BUS < 3.875VDC Verify BUS > 3.875VDC TX = 5VDC TX = 0VDC Normal Mode 4X Mode 4X = 5 VDC 4X = 0 VDC Normal Mode Loopback Mode LOOP = 5VDC LOOP = 0VDC BUS = 7V, IRX = -200µA BUS = 0V, IRX = 1.6mA RX = high (Short circuit protection limits) TX = 5VDC Verify BUS > 3.725 Verify BUS < 4.025 Sleep* = 5VDC Sleep* = 0VDC 2 0.8 0.2 0 2 110 0 1.4 Min. Typ. 0.7 11 39 0.8 Max. Unit V µA µA V V µA µA V µA µA 0.8 2 0 V V µA V V mA LOADDio Load Output (Unpowered) IBUSloss BUS & LOADCurrent during loss ILOADloss of assembly VBAT or GND TXVIL TXVIH ITXVIL ITXVIH 4Trip1 4Trip2 I4Xvih I4Xvil LTrip1 LTrip2 ILvih ILvil VRXhigh VRXlow IRX TX Input Voltage TX Input Current 4X Input Trip Point Voltages 4X Input Current 0 0 LOOP Input Trip Point Voltages LOOP Input Current RX Output Voltage, High RX Output Voltage, Low RX Output Current Sleep* Input Voltage 4.85 0.2 5 Sleep* VIH Sleep*VIL ISleepvih ISleepvil Sleep* Input Current V V µA µA * Denotes active low for Sleep and Reset. AC Characteristics for Class 2 Transceiver Standard Loads: IREG1 = 0.5mA, IREG2 = 0.5mA, IREG3 = 5mA BUSLTOH BUS Voltage Rise Times TX = 7.812Hz square wave See Figure 1 Min and Max Loaded BUS TX = 7.812Hz square wave See Figure 1 Min and Max Loaded BUS TX = 7.812Hz square wave See Figure 2 Load BUS with 3.300pF and 1.38kΩ Meas. @ 1.5V levels Meas. @ 6.25V levels 15 µs BUSHTOL BUS Voltage Fall Times 14 µs tWbus BUS Pulse Width Distortion 77 48 µs µs 8/13 L5951 ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VBAT = 14.4V unless otherwise specified. Standard Loads: IREG1 = 0.5mA, IREG2 = 0.5mA, IREG3 = 5mA) Symbol V1 V2 Parameter Spectral Content Limit (Measure spectral peak from 0.53MHz to 1.6MHz) Test Condition VBAT = 9V to 16V, no ground offset, 0.53 ≤ f ≤ 1MHz. VBAT = 9V to 16V, no ground offset, 1 ≤ f ≤ 1.67MHz. Measure Delay Between TX Trip Point and RX Trip Point Measure from 2.5V on TX to 3.875V on BUS 4X Mode Normal Mode See Figure 4 Measured from BUS Threshold Voltage Load RX with 50pF to Ground See Figure 5 Load RX with 50pF to Ground See Figure 5, Sleep* = 0VDC Min. Typ. 100 80 Max. Unit µV µV µs BUSDLY Propagation Delay TX to BUS Delay 16 TX4XDLY TXNormDLY RXLTOHdly RX Output Delay Time RXHTOLdly RXLTOH RXHTOL RXLTOH RXHTOL RX Output Transition Time 3.5 14.5 1.5 1.9 170 70 170 70 µs µs µs µs ns ns ns ns RX Output Transition Time During Sleep State 2 BUS TIMING DIAGRAM Figure 1. BUS Rise and Fall Times 5V TX 0V 64µsec 6.25V BUS 1.5V trise tfall 6.25V 1.5V D99AU993 Figure 2. BUS Pulse Width Distortion 5V TX 0V 64µsec 6.25V BUS 3.875V 1.5V >35µsec 64µsec